JPH06130455A - Exposure mode control device for camera - Google Patents

Abstract

PURPOSE:To provide an exposure mode control device for camera, which is applicable not only to the macro-range of a zoom lens but also to a macro-lens as the proximity mode. CONSTITUTION:A camera is equipped with a plurality of program lines in which combinations of the shutter speed and stop value corresponding to a plurality of exposure modes including the proximity mode are set previously, wherein the camera includes an exposure mode control device of such an arrangement that the program line for the proximity mode is set to a stop position which is fixed to the first value from the low shutter speed range till the hand move limitation, to the secondary value approx. one step throttle from the first value at the camera stake limitation and with this second value, controls after the camera shake limitation take place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a plurality of exposure modes, and more particularly to setting a program line for this exposure mode.

[0002]

2. Description of the Related Art Recent cameras have a plurality of exposure modes, and a photographer can select a desired exposure mode from these exposure modes by operating a switch or the like. Among the exposure modes that can be switched in this way, there is one in which the aperture value and the shutter speed are changed in a fixed relationship along a plurality of preset program lines so that a desired photographing effect can be obtained. By the way, in a plurality of exposure modes using such program lines, for example, in the close-up mode for close-up photography, one set under the macro range of the zoom lens and fixed with the aperture fixed at around F4. is there. It is difficult to apply the macro mode to the macro lens in such a proximity mode. Therefore, a camera having a proximity mode applicable to the macro lens as a proximity mode as well as the macro range of the zoom lens is desired.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and provides an exposure mode control device for a camera which can be applied not only to the macro range of a zoom lens but also to a macro lens as a close-up mode. The purpose is to do.

[0004]

SUMMARY OF THE INVENTION The invention which achieves this object is therefore
In a camera provided with a plurality of program lines in which a combination of a shutter speed and an aperture is set in advance corresponding to a plurality of exposure modes including the proximity mode, the program line relating to the proximity mode is set such that the aperture is shaken from a low shutter speed range. It is fixed to the first value up to the limit and fixed to the second value by narrowing down by about one step from the first value at the camera shake limit, and the second value is set to control after the camera shake limit. It is characterized by being.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of a camera according to the present invention will be described in detail below with reference to the accompanying drawings.

[Overall Structure] FIGS. 1 to 3 are a front view, a top view, and a rear view showing the structure of a camera body 10 of an automatic focusing (AF) single-lens reflex camera to which this embodiment is applied. is there. As shown in FIG. 1, on the front surface of the camera body 10, there is formed a lens mount portion 14 on which a taking lens 12 (schematically shown in FIG. 11) is replaceably (ie, detachably) mounted. ing. The taking lens 12 is composed of a power zoom lens in this embodiment, and has a focal length of 28 mm to 80 mm, for example.
It is set to be arbitrarily changeable within a range of mm via a built-in zoom motor (not shown).

"Photographing lens" This photographing lens 12 is locked to the lens mount portion 14 when mounted on the camera body 10, and a lens lock button 16 arranged on the left side of the lens mount portion 14 is used. By pushing in, the locked state is released, and removal from the lens mount portion 14 is allowed. Here, with the taking lens 12 mounted on the camera body 10, the connecting terminal group 18 arranged on the surface (front surface) of the lens mount portion 14 and the connecting terminal group arranged on the rear surface of the taking lens 12 By contacting with each other (not shown), as shown in FIG. 11, the body side CPU 20 incorporated in the camera body 10 and the lens side CPU 22 incorporated in the taking lens 12 are communicatively connected to each other. It will be a matter.

[Focus mode switching button] On the other hand, on the right side of the lens mount portion 14, a manual focus (MF) mode for manually focusing or an automatic focusing (AF) mode for automatically focusing is set. A focus mode switching button 24 is provided slidably along the vertical direction. As shown in FIG. 1, the "-" mark imprinted on the focus mode switching button 24 is marked A on the camera body 10.
By aligning with the F mark, the AF mode will change to M
The MF mode is switched and set by matching with the F mark.

"Shutter button, up / down lever, T
v / Av button] Further, as shown in FIGS. 1 and 2, on the left side of the upper surface of the camera body 10, a shutter button 26 is disposed so as to be able to be pushed in at a position protruding most forward. An up / down lever 28 for moving up / down the designated variable data is provided at a position immediately after the shutter button, around an axis substantially parallel to the optical axis of the taking lens 12 (that is, the camera body 10). Is disposed so as to be rotatable about an axis extending along the substantially front-back direction. Further, a Tv / Av button 30 which also functions as a clear button is disposed at a position immediately adjacent to the up / down lever 28 immediately adjacent thereto so as to be freely pushed. Where Tv /
The Av button 30 is a shutter speed priority mode each time the Av button 30 is pressed in the auto exposure mode (A) and the manual exposure mode (M) in the full-spec mode, which is set by bringing the main button 38 described later to the ON position. Alternatively, the aperture priority mode is sequentially switched and set.

In this embodiment, between the shutter button and the Tv / Av button 30, both of which can be pushed freely, the camera body 10 can be moved laterally with the camera body 10 held in the photographing position. The down lever 28 is interposed. Here, the shutter button, the up / down lever 28, and the Tv / Av button 30 are the index finger of the right hand of the photographer who holds the right side portion (the left side portion in FIGS. 1 and 2) of the camera body 10. It is arranged at a position where it can be operated by. That is, the shutter button and T
Both the v / Av button 30 is pushed by the index finger of the right hand, which may cause an erroneous operation. In this embodiment, the v / Av button 30 is operated only in the left-right direction between the two (in other words, If it is, it will not be pushed in)
Since the up / down lever 28 is provided, the photographer touches the up / down lever 28 with the forefinger in the pushing direction, and the button in front of this is used as the shutter button, and further than this. Press the button on the back to Tv / Av
Each of the buttons 30 can be surely recognized, and an erroneous operation such as a mistake in pressing can be surely prevented.

"Main Button" In the front portion of the upper surface of the camera body 10 near the center, a built-in flash (not shown) is arranged so that it can be popped up by pushing the pop-up button 32. Further, as shown in FIG. 2, an external display LCD panel 34 for displaying various information necessary for photographing is arranged on the rear portion near the center of the upper surface of the camera body 10 so as to be visible from the outside. It is set up. On the left side of the external display LCD panel 34, a main button 36 is arranged slidably along the front-rear direction. This main button 36 is in the OFF position-ON
The main switch 110, which will be described later, is turned off and turned on when the main switch 110 is slid between the position and the PICT position.
It is set to be turned on at the position or the PICT position.

When the main button 36 is brought to the ON position, the normal program mode (P), the automatic exposure mode (A) and the manual exposure mode (M) are arbitrarily selected. Mode: FULL) is set. On the other hand, the main button 36
By being brought to the PICT position, a green mode suitable for shooting by a beginner, a portrait mode suitable for shooting a person, a landscape mode suitable for shooting a landscape, a moving object mode suitable for shooting a moving subject, and An exposure mode (picture mode) is set in which a proximity mode optimal for shooting a subject in a proximity state is arbitrarily selected.

Although each of these exposure modes will be described in detail later, in this embodiment, each of the picture modes is set by selecting a symbol represented by a pictogram (picture). In the state where the manual exposure mode (M) is set, the shutter speed and the aperture are changed by rotating the up / down lever 28 from the values on the side set by the above-mentioned Tv / Av button 30. It is set so that you can do it. .

"Drive Button, Mode Button" On the other hand, on the right side of the upper surface of the camera body 10, the drive button 38 is on the right side and the mode button 40 is on the left side.
However, they are installed side by side so that they can be pushed in freely. The drive button 38 and the mode button 40 can be individually pushed by the index finger of the left hand of the photographer who holds the left side portion (the right side portion in FIGS. 1 and 2) of the camera body 10, and Both of them are arranged so that they can be pushed in simultaneously by the index finger.

Here, with the drive button 38 being pushed, the main button 36 is turned to the ON position or PI by rotating the up / down lever 28 described above.
The drive mode is set so as to be switched between the single-photographing mode, the multiple-photographing mode, and the self-timer photographing mode regardless of the CT position. In addition, the mode button 40 is operated by rotating the up / down lever 28 while pressing the mode button 40.
When the main button 36 is in the ON position, the exposure mode is sequentially switched between the normal program mode (P), the automatic exposure mode (A), and the manual exposure mode (M) where the full-spec mode is defined. When the main button 36 is set to the PICT position, the exposure mode is defined as the picture mode. It is set to be sequentially switched and selected by.

Further, the drive button 38 and the mode button 40 are set to be simultaneously pressed for a predetermined time so as to shift to the special function (PF) setting mode. With this PF setting mode set, every time the mode button 40 is pressed,
The contents of the special function to be set are sequentially switched and changed.
Also, with this PF setting mode set,
With "PF" displayed in English, the above Tv / A
By holding down the v button 30 for a predetermined time, this Tv / A
The v button 30 functions as a clear button, the details of which will be described later,
It is configured so that all the various data set in the special function setting mode are cleared. However, regarding the ISO sensitivity of the film in the clear operation, when the film is loaded in the camera body 10,
In the ISO sensitivity displayed by the DX code,
When a film is not loaded, the default value is set to 100, for example.

Further, the Tv / Av button 30 functions as a program shift clear button for clearing the shift amount by being pushed and driven while the program shift described later is being executed, and the exposure correction operation is further performed. It is set so as to function as an exposure correction clear button that clears the exposure correction amount by being pushed in while the image is being executed.

An accessory shoe 42, to which an external flash (not shown) is attached, is provided on the left side of the upper surface of the camera body 10. The accessory shoe 42 is usually covered with a cover member 44.

On the other hand, as shown in FIG. 3, the camera body 10
A finder eyepiece portion 46 is disposed on the upper part of the back surface of the. Further, the lower portion of the back surface of the camera body 10 is covered with a back cover 48 so as to be open over substantially the entire surface, and the film is attached and detached with the back cover 48 opened.
Although not described in detail, the back cover 48 has a date data imprinting mechanism 50 capable of imprinting the photographing date on the film being photographed.

"Hyper button" Also, this camera body 10
A hyper button 52 is disposed on the right shoulder on the back surface of the so as to be freely pushed. The hyper button 52 basically functions as an exposure correction button, and when the normal program mode (P) and the automatic exposure mode (A) in the normal exposure mode are selected, the hyper button 5 is pressed.
By rotating the up / down lever 28 while pressing 2, the optimum exposure state calculated on the camera side can be corrected in the plus direction or the minus direction according to the photographer's intention. On the other hand, even when a shooting mode other than the green mode in the picture mode is set, exposure correction can be performed by performing the same operation as described above.

Further, when the manual exposure mode (M) in the normal exposure mode is set, by pressing the hyper button 52, the exposure metering calculation is executed, and the optimum shutter speed and aperture are calculated based on the calculation result. Is set. That is, when the hyper button 52 is pressed in the manual exposure mode (M), the automatic exposure mode (A) is substantially set. The value of the exposure correction made by rotating the up / down lever 28 while pressing the hyper button 52 is cleared by pressing the Tv / Av button 30 that functions as a clear button while pressing the hyper button 52. Will be done.

[Display Contents of External Display LCD Panel] Next, referring to FIGS. 4 to 6, the external display LCD described above will be described.
The configuration of the panel 34 will be described in detail.

First, the external display LCD panel 34 is
The display mode is set as shown in FIG. 4 in the full lighting state. Also, as shown in FIG. 5, this external display LC
The D panel 34 is provided with four fixed display portions 54a to 54d which are always displayed regardless of the position of the main button 36. Here, reference numeral 54a indicates a halftone for actually making the above-mentioned picture displaying the green mode green. Reference numeral 54b represents a partition line for dividing the display area of the external display LCD panel 34 into left and right parts by this, and the five shooting modes selected in the picture mode are provided on the left side of the partition line 54b. And a letter representing each of the three shooting modes selected in the normal exposure mode are displayed. On the right side, various kinds of images necessary for shooting such as exposure state, shutter speed, aperture, and number of shots are displayed. Information is set to be displayed. Reference numerals 54c and 54d respectively indicate a left parenthesis and a right parenthesis, and the areas enclosed by the parentheses are set so as to display the battery status, the film-related information, the special function setting information, and the like. That is, the display contents obtained by removing the fixed display parts 54a to 54d shown in FIG. 5 from the fully lit state shown in FIG. It should be noted that the display portion displayed by these liquid crystals is turned on when the main button 36 is set to a position other than the position.

More specifically, on the left side of the partition line 54b, from the top to the bottom, a picture (smile face) 56a showing the green mode, a picture (person) 56b showing the person mode, and a landscape mode are shown. Picture (mountain)
56c, picture showing running mode (running person) 5
6d, pictures (flowers) 56e indicating the proximity mode are sequentially arranged so that they can be lighted, and the lowermost tier has the letter P indicating the normal program mode selected in the normal exposure mode,
The letter A indicating the automatic exposure mode and the letter M indicating the manual exposure mode are arranged so that they can be lit side by side. In addition, frames 58a to 58e indicating that the corresponding pictures 56a to 56e have been selected are provided around the respective pictures 56a to 56e so as to be lightable.

Specifically, when the main button 36 is brought to the ON position to set the normal exposure mode, the letter P indicating the normal program mode and the automatic exposure are displayed on the left side of the partition line 54b. It is set so that only the letter A corresponding to the selected mode among the letter A indicating the mode and the letter M indicating the manual exposure mode is turned on. On the other hand, when the main button 36 is brought to the PICT position and the picture mode is set, the partition line 5
All the pictures 56a on the left side of 4b
To 56e are turned on, and only the frames 58a to 58e corresponding to the selected picture mode are set to be selectively turned on.

Further, on the right side of the partition line 54b, a total of nine black circles 58f are arranged at the upper edge of the central portion in a state of being arranged side by side at equal intervals.
Immediately below the graph 58f, a total of nine scales 58g corresponding to each black circle are arranged so that they can be turned on. Below the center of the scale 58g, a triangular mark 58h indicating the center position is arranged so that it can be turned on. Further, a minus mark 58i is arranged below the left end of the scale 58g, and a plus mark 58j is arranged below the right end so that the mark 58j can be lit. Here, the minus direction indicates the narrowing side of the diaphragm or the low speed side of the shutter speed,
The plus direction indicates the opening side of the diaphragm or the high-speed side of the shutter speed. Here, the graph 58 described above
f is the direction and amount of the program shift when the exposure mode selected in the picture mode selects four exposure modes other than the green mode, by rotating the up / down lever 28 to change the dot blinking and lighting states. Is configured to display, for example, graph 5
The "+" mark and the "-" mark may be turned on or off at both ends of 8f, and the graph 58f may be configured to directly display the magnitude change of the shutter speed or the magnitude change of the aperture value. In this case, the pictures 56f, 56g, and 56h at both ends of the graph 58f are eliminated, and the above-mentioned "+" is eliminated.
It is also possible to display only the mark and the "-" mark.

On the other hand, in the picture mode, the person mode,
Pictures 56f and 56g that are lit when either the landscape mode or the proximity mode are selected are provided. Here, the left picture (the figure in which both the person and the mountain are in focus) 56f shows a state in which the aperture is narrowed down and the depth of field is deep, and the range in which the focus is achieved is widened. In the right picture (a figure in which only people are in focus and mountains are out of focus) 56g, the aperture is open and the depth of field is shallow, resulting in a narrow focus range. Respectively.

Further, the left side of the minus mark 58i (that is, the side immediately below the picture 56f), and the plus mark 58.
Pictures 56h and 56i that are turned on when the moving object mode is selected in the picture mode are provided on the right side of j (that is, immediately below the picture 56g). Here, the picture on the left (a diagram of running people) 5
6h shows a state in which the shutter speed is slow and the subject easily flows, and the right picture (a figure in which a running person is not flowing) 56i has a high shutter speed and the subject stops. Then, the respective states that are easily projected are shown.

Below the picture 56h, three kinds of pictures 56j, 56k, 56m are arranged so as to be lit downward. Here, these three types of pictures 56j, 56k, and 56m show the setting states of different modes of the automatic power zoom control adopted when the taking lens 12 mounted on the camera body 10 is a power zoom lens. In the uppermost picture 56j, the constant image magnification photographing mode is set, in the next picture 56k, the clip photographing mode is set, and in the lowermost picture 56m, the inter-exposure zoom photographing mode is set. It is designed to be lit. The description of these auto power zoom controls is omitted because it is not related to the gist of the present application.

Below the minus mark 58i,
Five types of pictures 56n, 56o, 56 facing downward
p, 56q, and 56r are arranged so that they can be turned on. Here, the uppermost picture (thunder) 56n is blinked when flash photography is requested, and the built-in flash is popped up by pressing the pop-up button 32, and is turned on when the flash photography is enabled. Has been done. The picture (eye) 56o in the next stage is lit up in a state where the red-eye photography prevention mode during flash photography is set. Here, when the red-eye shooting prevention mode is set, although detailed description is omitted, the built-in flash pre-emits light before the flash shooting to close the pupils of the person constituting the subject.

Further, in the third-stage picture (clock) 56p, the drive button 38 is pushed in and the drive setting mode is set, and the up / down lever 28 is rotated to select the self-timer photographing mode. It is set to turn on when it turns on. Also, the picture (quadrangle) 56q in the fourth row is in the single-shot mode or the multiple-shot mode by rotating the up / down lever 28 with the drive button 38 being pressed and the drive setting mode being set. Is set to light up when is selected. Further, the bottom picture (a diagram showing a state in which a large number of images are stacked) 56r is a state in which the drive button 38 is pressed and the drive setting mode is set.
By turning the up / down lever 28, it is set to be turned on when the multiple-photographing mode is selected. That is, when the single image shooting mode is set,
If only the rectangular picture 56q is turned on and the multi-shot shooting mode is set, the rectangular picture 56q is set.
It is designed to be lit with the picture 56r added to q.

On the other hand, between the above-mentioned triangular mark 58h and the minus mark 58i, the picture 56s relating to the learning mode is arranged so that it can be turned on. The picture (notebook and pencil) 56s is lit when the learning mode is set in the special function (PF) setting mode. The learning mode will be described later in detail.

Further, on the right side of the above-mentioned lightning picture 56n and below the triangular mark 58h, the letter "Tv" indicating the shutter speed is provided so that it can be turned on. The bar mark 58 consisting of a circular arc is located just above the English letter "Tv".
k is arranged so that it can be turned on. This bar mark 58k
Is turned on when the shutter priority mode is selected by pressing the Tv / Av button 30.

Below the "Tv", an alphabetical letter "Av" indicating the diaphragm is provided so that it can be turned on. The bar mark 58m consisting of an arc is located just above the English letter "Av".
Are arranged so that they can be turned on. This bar mark 58m
Is turned on when the aperture priority mode is selected by pressing the Tv / Av button 30. still,
On the external display LCD panel 34, the “Tv” mark and the “A
Both of the "v" marks can be displayed at the same time, or one of them can be displayed according to the switch operation.

Here, on the right side of the above-mentioned letter "Tv", 4-digit display portions 60a to 60d indicating the shutter speed (or ISO sensitivity) are provided so that they can be turned on. Here, the left two-digit display portions 60a and 60b are composed of 7 segments, and are capable of displaying arbitrary numbers of "0" to "9" and alphabetic characters, respectively. Also,
The second display unit 60c from the right is composed of 6 segments and is configured to be capable of selectively displaying the number "5" or "0". Also, the display section 60d on the right end
Is designed so that "0" or """can be selectively displayed. Note that "" is lit when the unit of the shutter speed value displayed on the left two-digit display units 60a and 60b is seconds, and the unit of the shutter speed value displayed with a maximum of four digits is It is set so that it does not light up when the reciprocal seconds are reached.

On the other hand, on the right side of the above-mentioned letter "Av",
Two-digit display units 60e and 60f showing a diaphragm and the like are arranged so that they can be turned on. These two-digit display parts 60e, 60f
Is composed of 7 segments, and can display arbitrary numbers of "0" to "9" and alphabetic characters. A dot display section 60g indicating a decimal point is lit between the two display sections 60e and 60f so that it can be turned on.

The left parenthesis 54c and the right parenthesis 5 described above are also included.
A picture (dry cell) 56s showing the power state of the power source (battery) is arranged in the upper left of the area surrounded by 4d so as to be lightable. This picture 56s fully illuminates the inside when the battery power is sufficient, half illuminates the inside when the residual power becomes small, and turns on the interior when the residual power is substantially extinguished. It is set to be turned off.

Below the dry battery picture 56s, a picture (patrone) showing a film loading state is shown.
56t is arranged so that it can be turned on. The Patrone picture 56t is set to be turned off when the film is not loaded and turned on when the film is loaded.

Further, the above left parenthesis 54c and right parenthesis 5
On the right side of the area sandwiched by 4d, two-digit display units 60h and 60i showing the exposure correction value and the alphabet "PF", etc.
Are arranged so that they can be turned on. These two-digit display section 60
Each of h and 60i is composed of 7 segments and is "0".
~ It is designed so that any number of "9" and an alphabetic character can be displayed. A dot display section 60j showing a decimal point is provided between the two display sections 60h and 60i, and a minus display section 60k showing that the exposure correction value is a negative value is provided on the left side of the left display section 60h. It is arranged so that it can be turned on.

[Structure of External Display LCD Panel] Next, the structure of the external display LCD panel 34 will be described with reference to FIG. The external display LCD panel 34 includes a pair of upper and lower transparent glass plates 34a and 34b.
The a and 34b are separated from each other by a predetermined gap via a spacer 34c. The liquid crystal 34d is filled in the gap defined by the spacer 34c. Here, a pair of upper and lower transparent electrodes 34e and 34f are provided on the lower surface of the upper transparent glass plate 34a and the upper surface of the lower transparent glass plate 34b.
The display units 60a to 60k, such as 58 m and 7 segments, are independently arranged. That is, for example, when the picture (smile face) 56a is turned on, the picture (smile face) 56a is turned on independently by energizing the pair of upper and lower transparent electrodes 34e and 34f corresponding to the picture 56a. It will be a matter.

On the other hand, on the upper surface of the upper transparent glass plate 34a,
The first polarizing plate 34g is attached. A second polarizing plate 34h is attached to the lower surface of the lower transparent glass plate 34b. Here, the above-mentioned green halftone 54a is printed by tampo printing on the upper surface of the second polarizing plate 34h, and the above-mentioned partition line 54b and a pair of left bracket 54c and right bracket 54d are printed. .
The reflection plate 34i is provided on the lower surface of the second polarizing plate 34h.
Is attached. Since the external display LCD panel 34 is configured in this manner, the above-mentioned display contents are surely displayed as needed.

[Display LCD panel in viewfinder]
An in-finder display LCD panel 62 as shown in FIG. 7 is arranged on the right edge of the outer frame defining the finder, which is removed through the finder eyepiece section 46 described above. The contents displayed on the in-finder display LCD panel 62 are substantially simplifications of the display contents on the external display LCD panel 34. Here, the same reference numerals are given and the description thereof is omitted. It should be noted that this in-viewfinder display LCD panel 62 is not provided in the external display LCD panel 34, and this in-finder display LCD panel 62 is not provided.
As a display unit provided only with the focus indicator 58n, which is lit at the time of focusing to notify the photographer that the subject is in focus. Here, this focus mark 58n
Is lit up when both the manual focus (MF) mode for manually focusing and the automatic focusing (AF) mode for automatically focusing are selected with the focus mode switching button 24. It is set.

"Shutter button, up / down lever, T
Attachment Structure of v / Av Button, Drive Button, Mode Button ”Next, referring to FIG. 8 to FIG. 10, five operation members provided on the upper surface of the camera body 10 described above, that is, a shutter button, an up button / Down lever 28, Tv / Av button 30,
The mounting structure of the drive button 38 and the mode button 40 will be described.

First, A shutter button and an up / down lever 2 arranged on the left side (right side as viewed by the photographer) of the external display LCD panel 34 on the upper surface of the camera body 10 in the figure.
8, and the mounting structure of the Tv / Av button 30 will be described with reference to FIGS. 8 and 9. That is, as shown in FIG. 8, the shutter button is housed in the first opening 64 a formed in the top plate 64 that defines the upper surface of the camera body 10 so as to be able to be pushed from the outside, and the shutter button is used. Always urged upwards. A switch assembly 68 is disposed below the shutter button,
In the switch assembly 68, there are a photometric switch 70 (shown in FIG. 11) that is turned on when the shutter button is half-pressed, and a release switch 72 (shown in FIG. 11) that is turned on when the shutter button is fully pressed. It is stored.
Further, the Tv / Av button 30 is housed in the second opening 64b formed in the top plate 64 so as to be freely pushed from the outside, and is constantly urged upward by the leaf spring 74. A clear switch 76 is provided below the leaf spring 74, and the clear switch 76 is configured to be turned on by pressing the Tv / Av button 26.

On the other hand, the above-mentioned up / down lever 28
Is configured to be rotationally driven instead of being driven by a pushing operation. That is, as shown in FIG. 9, the up / down lever 28 is
a and a support shaft portion 28b that is integrally connected to the lever body 28a and extends along an axis substantially parallel to the optical axis of the taking lens 12, and is provided around the center axis line of the support shaft portion 28b. It is pivotally supported. This lever body 28
a is formed in a substantially semi-circular shape, and its upper end projects upward through a third opening (slit) 64c formed in the upper decorative plate 64. The up switch 78, which is turned on when the lever main body 28a is rotated counterclockwise in the figure (that is, clockwise as seen by the photographer), also moves clockwise in the figure (that is, seen by the photographer). Down switches 80 that are turned on by being turned counterclockwise). The lever body 28a is urged by a return spring (not shown) so as to return to a neutral position in which both the up switch 78 and the down switch 80 are not turned on (in other words, elastically held). ing.

Further, the drive button 38 and the mode button 40
As shown in FIG. 10, they are respectively housed in the fourth and fifth openings 64d and 64e formed in the upper decorative plate 64 so as to be freely pushed from the outside, and are always attached upward by springs (not shown). It is energized. A drive switch 82 is disposed on the switch parent board 86 below the drive button 38, and a mode switch 84 is disposed below the mode button 40. This drive switch 8
2 is turned on by pushing the drive button 38, and the mode switch 82 is turned on by pushing the mode button 40.

Similarly, the hyper switch 88, which is turned on when the hyper button 52 is pressed, turns on the camera body 10.
It is arranged inside. In addition, in the camera body 10,
A cartridge detection switch 90 is provided which is turned on by the cartridge of the film loaded by opening the back cover 48 to detect the loading state of the cartridge. The hyper switch 88 and the cartridge detection switch 90 are both shown in FIG.

[Explanation of control system of AF single-lens reflex camera] With reference to FIG. It will be used for photography as a single-lens reflex camera. The configuration of the control system in the AF single-lens reflex camera will be described below with reference to FIG.

That is, most of the subject light flux that has entered the camera body 10 from the zoom optical system of the taking lens 12 is reflected by the main mirror 92 toward a penta mirror (not shown) constituting the finder optical system. Further, a part of the reflected light is incident on the light receiving element 94 (shown in FIG. 11) of the photometric IC. On the other hand, of the subject light flux that has entered the camera body 10, a part of the subject light flux that has entered the half mirror portion (not shown) of the main mirror 92 is transmitted therethrough, and is reflected downward by a sub mirror (not shown) in the rear, and is not shown. It is incident on the CCD sensor unit for distance measurement.

The photometric IC described above includes a light receiving element 94 for receiving a subject light flux, and an electric signal generated by the light receiving element 94 in accordance with the amount of received light is logarithmically compressed by a photometric circuit 96 and A / D converted. The circuit 98 performs A / D conversion, and outputs the photometric signal to the body side CPU 20. The body side CPU 20 executes a predetermined calculation based on the photometric signal and the film sensitivity information to calculate an appropriate shutter speed for exposure and an aperture value. Then, based on the shutter speed and the aperture value, the exposure control device 100 and the aperture mechanism (not shown) are driven.

The CPU 20 on the body side executes a predetermined exposure calculation based on the digital photometric signal and the film sensitivity information to calculate the appropriate shutter speed and aperture value for exposure. Then, based on these shutter speed and aperture value, the exposure control device 100 and an aperture mechanism (not shown) are driven to perform exposure. Further, at the time of release, the body side CPU 20 drives a mirror motor (not shown) through a motor drive circuit (not shown) to cause the main mirror 9 to be released.
After the exposure, the film is wound up by driving a winding motor (not shown).

Further, the body side CPU 20 is connected to the lens side CPU 22 through the connection between the connection terminal group 18 provided on the lens mount section 14 and the connection terminal group (not shown) provided on the mount surface of the taking lens 12. Data between,
Communicate commands and so on. It should be noted that the photographing lens 12 is provided with a focal length detection mechanism 102 for detecting the currently set focal length.
2 is connected to the lens side CPU 22.

Further, the body side CPU 20 controls the overall control, a control section 20a having a built-in ROM for storing programs and a RAM for storing predetermined data, an AF (autofocus) calculation, a PZ (power zoom) calculation, A
An arithmetic unit 20b for executing arithmetic processing such as E arithmetic and learning arithmetic
And a timer counter 20c, and an EEPROM 106 as an external memory means is connected to the controller 20a via the controller 104. This EEPRO
In addition to various constants specific to the camera body 10, M106 stores various functions and constants necessary for calculation processing such as AF (autofocus) calculation, PZ (power zoom) calculation, AE calculation, and learning calculation. There is. Further, an electronic buzzer 108 for oscillating a focusing sound is connected to the controller 104. In addition, this electronic buzzer 108
Consists of PCV in this embodiment.

Further, the CPU 20 on the body side has a photometric switch 70 which is turned on by half-pressing the shutter button, a release switch 72 which is turned on by fully pressing the shutter button, and a main button 30.
The main switch 110, the clear switch 76, the up switch 78, which are turned on / off according to the sliding movement of the
A down switch 80, a drive switch 82, a mode switch 84, a hyper switch 88, a cartridge detection switch 90, etc. are connected.

Here, the main switch 110 described above is used.
Is an on switch 110a and a PICT switch 110b
And the on switch 110a has a main button 36
Is turned on by sliding to the ON position and turned off at other positions.
b is turned on when the main button 36 is slid to the PICT position, and turned off at other positions. The main switch 110 is turned on when the on switch 110a or the PICT switch 110b is turned on, and is turned off when both of them are turned off.

Next, the control of the camera of this embodiment will be described with reference to the flowchart. The main routine includes a POFF loop corresponding to the standby state and a PON loop in the operating state. That is, each process for controlling the camera of this embodiment is executed from the PON loop. The control process is roughly divided into the following four processes. First, shutter button 2
Release operation for controlling shooting by fully pressing 6 and then SW operation display for controlling display processing associated with operation of mode button 40, drive button 38, Tv / Av button 30, up / down lever 28, hyper button 52, etc. There are a loop, an AE calculation process for controlling various program calculations, and a learning calculation process for controlling a learning function for learning the operation of the photographer. The SW operation display loop is further divided into a process in the exposure mode such as exposure correction and program shift, and a process in the special function setting mode.

"Main Routine" FIG. 12 is a flow chart showing a main routine for controlling the camera of this embodiment. The flowchart starts when the battery is attached to the camera. When the battery is loaded into the camera body 10, first, interrupt processing is prohibited, and initialization processing such as flag initialization, RAM / register initialization, and ROM sum check is executed (S1).
201, S1203). Next, the power hold-on state is once turned on, power is supplied to the hardware of the entire camera, and the data stored in the EEPROM 106 is CP-converted.
Write to RAM of U20 (S1205, S120
7). When the above process is completed, the process proceeds to the POFF loop, which is repeatedly executed when the main switch of the camera is off.

"EEPROM / RAM Data Format" FIGS. 58 and 59 are diagrams showing the formats of the data stored in the EEPROM and the data written in the RAM. The camera of this embodiment has a function of learning the shift amount of the program in each exposure mode of portrait, landscape, moving body, and proximity. Therefore, in each exposure mode, GENPSFT showing the shift amount from the initial origin of the learning origin in the learned program diagram.
(0) to GENPSFT (3) and S indicating the number of times the release is performed with the program shift amount set by the photographer.
TDYCNT (0) to STDYCNT (3) are temporarily RA
M10, and if necessary, EEPROM10
Written in 6. The data written in the EEPROM 106 is S1303 in FIG. 13A and S1207 in FIG.
It is written in the RAM in steps such as. Furthermore, RAM
GENPSFT (0)-(3) and S written to
Data is transferred from TDYCNT (0) to (3) to GENPSFT and STDYCNT according to the selected exposure mode. Although not written in the EEPROM, in addition to the above-mentioned GENPSFT and STDYCNT, SETPSFT for storing the program shift amount from the learning origin set by the photographer and ALLPSFT for storing the final program shift amount are RAM. It is provided above. FIG. 59 shows the data AL on the RAM described above.
LPSFT, SETPSFT, GENPSFT, STD
The data structure of YCNT is shown. As shown in the figure,
ALLPSFT, SETPSFT, GENPSFT,
In each case, the 0th bit to the 6th bit represent the absolute value of the shift amount in units of 1/8, and the 7th bit is a direction bit representing the direction of the shift. Also, ST
DYCNT represents the number of times from the 0th bit to the 5th bit, and the 6th and 7th bits are data relating to the learning situation.

"POFF loop" In the POFF loop,
First, the SW operation display loop is called. In the SW operation display loop, the release switch 72, the photometric switch 70, the main switch 110, and the clear switch 7
6, "1" or "0" depending on the on / off state of the up switch 78, the down switch 80, the drive switch 82, the mode switch 84, and the hyper switch 88.
Is set, release SW, metering SW, main S
W, clear SW, UPSW, DOWNSW, drive S
Each flag such as W, mode SW, and HYPSW, and various flags set according to the operation of each switch are input to the CPU, and based on this, the display of the external display LCD panel 36 and the internal display LCD panel 62 is changed. Control is performed (S1211, S1213). Here, when "0" is set in the main SW (that is, when the main button 36 is in the OFF position), only the SW operation display loop is called at a cycle of 128 ms (S121).
1, S1213), the power hold OFF state is held (S1229, S1231, S1233). In addition, even if "1" is set in the main SW (that is,
Even if the main button 36 is in the PICT position or the ON position), (1) release switch, (2) photometric switch,
(3) Hyper switch (HYPSW), (4) Up switch (UPSW), (5) Down switch (DOW)
NSW) is all "0" or the PF mode flag is set to "0", the power hold OFF state is still held,
Only the SW operation display loop is called at a cycle of 128 ms (S1217 to S1233, S1211, S12).
13). Here, the PF mode flag is set to "1" when the camera is operated in a special function setting mode (PF mode) described later. Therefore, in the PF mode, the process proceeds to RESTART regardless of the state of the operation SW. When any of the above (1) to (5) is turned on during the execution of the POFF loop, the RESTART processing of FIG. 13 is executed.

"RESTART" FIGS. 13A and 13B
FIG. 9 is a flowchart showing a RESTART process. The RESTART processing is performed in the POFF loop shown in FIG. 12 when "1" is set in the main SW and "1" is set in any of the above flags (1) to (5) This is a process executed when "1" is set in the PF mode flag. S
In 1301, the power hold is turned on, power is supplied to the entire hardware of the camera, the data in the EEPROM is read again, and the data is written in the RAM (S1303). S13
In 05, the number of repetitions of the PON loop executed thereafter is set in the counter PON timer, and the process proceeds to the PON loop.

"PON Loop" In the PON loop, Tv /
The AE calculation for calculating the Av value is executed. It also controls the release process. First, in order to determine the repetition period of the PON loop, a 128 ms timer is started (S1311), and the display of the external display LCD panel 36 and the viewfinder display LCD panel 62 is controlled by the SW operation display loop (S1313). If "1" is set in the main SW (S1315: main SW
= “1”), data communication from the external flash to the camera body and communication between the camera body and the lens are performed (S1317, S1319). Next, normal photometry processing is performed (S1321), and A is calculated based on the photometry data.
The E operation is performed (S1323). Based on the result of the AE calculation, predetermined data is transmitted from the camera body to the flash (S1325), and then the display process including the calculation result is performed by the SW operation display loop (S13).
27). When the shutter button 26 is fully pressed (S132
9: Release processing is executed for release SW = “0”). When the release switch 72 is in the OFF state (S1329: Release SW = "1"), the AF loop is called, and the state of the release SW is repeatedly monitored and the AF is repeated until the 128 ms timer expires.
The loop is called (S1329 to S1333). 1
After 28 ms, metering SW, HYPSW, UPSW, D
All of the OWNSWs are in the OFF state (the state where "0" is set), and the PF mode flag = "0" (indicating that it is not the special function setting mode) is held (S1
335 to S1343) and when the PON loop is repeated the number of times set in S1305, the process shifts to the POFF loop (S1345 to S1347). on the other hand,
In cases other than the above, the PON loop is repeated.

"Release Processing" FIG. 14 is a flow chart for explaining the release processing. In the release process,
Photometric processing (S1401), data communication from the flash to the camera body (S1403), AE calculation (S) described later.
1405), data communication from the camera body to the flash based on the AE calculation result (S1407), and a SW operation display loop (S1409) are performed, and then mirror up, aperture control (S1411), and exposure processing (S141).
3), film winding, mirror down (S1417)
A series of exposure operations of is executed. In the camera of this embodiment, after the exposure process is completed, a learning calculation described later is executed (S1415) to learn the setting of the photographer. When the release process is completed, P again shown in FIG.
The processing shifts to the ON loop.

"Switch Operation Display Loop" FIG. 15 shows the external display LCD panel 3 in response to the operation of the operation button of the camera.
4 and a SW operation display loop for controlling the display of the display LCD panel 62 in the finder and the like. In the SW operation display loop, ISO
Processing according to the operation of the operation button such as sensitivity display and switching between the PF setting mode and other shooting modes is performed and displayed. In S1501, as shown in FIG. 11, the state of each switch set according to the operation of the operation button of the camera is read, and each flag (main SW, PF) is read.
Mode flag, mode SW, drive SW, PFOUT
M flag).

In the camera of this embodiment, when the mode button 40 and the drive button 38 are simultaneously pressed in the normal photographing enabled state, the ISO sensitivity is first displayed on the external display LCD panel 34, and when they are simultaneously pressed for a predetermined time, The PF setting mode (special function setting mode) is entered. When entering the PF setting mode, the PF mode flag is "1".
Is set (described later). In the SW operation display loop, if the main SW is “0”, the external display LCD panel 34 and the in-finder display panel 62 are extinguished, and after the PF cancel processing described later is performed, the SW operation display is performed. Return to where the loop was called.

"1" is set in the main SW,
When the PF setting mode is not entered, the states of the mode SW and the drive SW are determined. When "0" is set in both the mode SW and the drive SW, the process branches depending on the PFOUTM flag. P
The FOUTM flag is set only when the PF setting mode is normally terminated after the PF setting mode is entered once.
"1" is set and normally "0". still,
When returning from PF setting mode to normal exposure mode,
The mode button 40 and the drive button 38 are simultaneously pressed for a predetermined time. Mode SW and drive SW
When both are 0, the PF timer is incremented from 0. When the PF timer is less than 31, the ISO sensitivity is displayed on the external display LCD panel,
At the same time, the remaining time until entering the PF mode is graphically displayed by the PF timer display processing (described later). When the PF timer display process ends, the process returns to the place where the SW operation display loop is called. In S1513, when the PF timer becomes 31 or more, the PF mode flag indicating that the PF mode is entered is set to 1, and the PFINM flag is also set to "1". PF timer = 31
Corresponds to a time interval of approximately 2 seconds. If "1" is set in the PF mode flag, the process proceeds from S1505 to the PF loop when the SW operation display loop is called next. The PF loop monitors the state of each switch while operating in the PF setting mode. still,
The PF loop will be described later. In the present embodiment, the ISO is displayed only while the mode button 40 and the drive button 38 are simultaneously pressed, but once both buttons are pressed, a predetermined time is required even after they are released. I
You may make it control so that SO display may be performed.・

If either the mode SW or the drive SW is turned off during the ISO sensitivity display, that is, the time remaining until the PF mode is entered is displayed as a graph, the PF timer is cleared and 0 is set. And again
“0” is set in the PFOUTM flag. Incidentally, P
If the drive button 38 and the mode button 40 are kept being pressed when the F setting mode is changed to the exposure mode, since the PFOUTM flag is set to "1", the display changes from S1511 to the SW operation display 1. The process proceeds so that the PF setting mode will not be entered again. To shift to the PF setting mode again, either release the mode button 40 or the drive button 38 and then press S15.
After setting "0" to the PFOUTM flag at 25,
By pressing both buttons at the same time again, it becomes possible to shift to the PF setting mode. In this way, immediately after switching from the PF setting mode to the shooting mode, even if the drive button and the mode button are continuously pressed, the PF setting is performed again.
The operability is improved without switching to the setting mode. During operation in the normal exposure mode, unless at least one of the mode button and the drive button is pressed, the process related to the PF setting mode is not performed, and the process proceeds to the process of the SW operation display 1 (S1507, S1509, S1).
1525).

"Switch operation display 1" 16A, 16A
B and 16C are flowcharts of the SW operation display 1.
In the SW operation display 1 process, the display of data selected and set by operating the up / down lever 28 is controlled. First, in S1601, the learning mode flag is set to 0. In this embodiment, "0" (learning permission) is set in the learning prohibition flag in the PF setting mode,
In addition, the learning mode flag is set to "1" only in the learning mode (portrait / landscape / moving body / close proximity) to perform learning (described later). In the U / D loop executed in S1603, the up / down lever 28
Various setting / display processing is performed according to the operation of (details will be described later). In the AE mode setting process of S1605, the data set in the U / D loop and the main button 36
Whether the exposure mode is green, person, landscape, moving body, proximity, program, auto, or manual mode is determined depending on whether the is in the PICT position or in the ON position (details will be described later). A numerical value according to the exposure mode is set in the "AE mode".

Next, the process branches depending on the exposure mode (S1608 to S1609). In FIG. 16B, S1
611 to S1621 are processes related to program shift, which will be described later, and S1623 and S1625 are processes related to exposure correction. When the exposure mode is the green mode or the manual mode, the program shift and the exposure correction are not performed, and therefore the above steps are not performed. In the auto mode, only the exposure correction is performed and the program shift is not performed. In the program mode, although the graph is not displayed, the program shift is possible and the processing from S1619 is performed.

When the exposure mode is the person / landscape / moving body / proximity mode, the camera of this embodiment has a function of learning the program shift amount set by the photographer. In this learning function, the camera has a patrone attached, and
It is valid only when the learning prohibition flag is set to "0" in the PF setting mode. When the above conditions are satisfied, the learning mode flag is set to "1" (S1611-S1615). Next, in the P shift graph display process, the program shift amount set by the photographer is displayed as a graph on the external display LCD panel 34 and the viewfinder display LCD panel 62. The set program shift amount can be canceled by pressing the Tv / Av button 30 independently. S1619
Then, the program shift cancel processing is performed (details will be described later). In S1621, the characters "Tv" and "Av" and the overline 58k on the arc,
A process of displaying 58 m on the external display LCD panel 34 is performed.

As described above, in the camera of this embodiment, when the exposure mode is person / landscape / moving body / proximity / program / auto, exposure compensation can be set. When the hyper button 52 is pressed, an exposure correction graph is displayed on the external display LCD panel 34 and the viewfinder display LCD panel 62. With the exposure compensation graph displayed,
That is, the correction amount is set by rotating the up / down lever 28 while pressing the hyper button 52 (S).
1623). The set exposure compensation amount can be cleared by pressing the Tv / Av button 30 while the exposure compensation graph is displayed (S1625). Details of the exposure correction display and the exposure correction clear process will be described later.

When the exposure mode is auto, Tv / A
By operating the v button 30, shutter priority or aperture priority can be switched (S1627). In the case of the shutter priority, the Tv value can be changed by operating the up / down lever 28. Further, in the case of the aperture priority, the Av value can be changed by operating the up / down lever 28. At this time, Tv or Av is displayed on the external display LCD panel 34.
Of these, the arc-shaped overline 58k
Or 58m is displayed, and in the internal display panel,
The underline is lit on the priority Tv value or Av value (S1629).

When the exposure mode is manual, the deviation of the manually set Tv / Av value from the calculated proper exposure value is graphically displayed by the exposure display processing (S1631). In the manual mode, when the hyper button 52 is pressed alone, the proper exposure value calculated according to the program is set. The Tv / Av value is set in the manual mode with the up / down lever 28. Which is set by the up / down lever 28 is the same as in the auto mode, as in the case of Tv / Av.
It is switched by the switch 30 (S1633). Also,
External display LCD panel 3 as in the auto mode
4, the arc-shaped overline 58k or 58m is displayed on the side of Tv or Av that can be changed by the up / down lever 28, and the Tv value or Av value is displayed under the viewfinder display LCD panel. The line is turned on (S1635). The Tv value and the Av value determined as described above are displayed on the external display LCD panel 34 and the in-finder display LCD panel 62 (S1637), and display of each exposure mode / drive mode, display of learning or not, etc. Various displays defined for each mode are performed (S1641).

"PF Loop" FIG. 17 is a flowchart of the PF loop process. In the PF loop processing, a branch is made to the PF loop 1 processing for setting / changing various special functions in the PF setting mode, and processing for returning to the normal exposure mode after the function setting is completed is controlled.

To set the special function (PF), in the PF setting mode, the setting item is selected by operating the mode button 40, and the data is changed by rotating the up / down button 28. During the PF setting mode operation, if one minute elapses without performing the above special function setting operation, the PF
The setting mode process is canceled and the exposure mode is restored. Therefore, when any of the modes SW, UPSW, and DOWNSW is turned on by the PF end timer, 0 is set in the PF end timer, and when none of them is turned on, the timekeeping is continued. Incidentally, when the mode button 40 and the drive button 38 are simultaneously pressed from the normal exposure mode to proceed to the PF loop,
Since "1" is set in the PFINM flag in S1527 of FIG. 15, the process proceeds from S1715 of FIG. 17 to the PF display process. Since the PFINM flag is set to "0" in this PF display process, the PF display process is performed by PF.
It is executed only when the setting process is performed, and the mode button 40
Alternatively, when the drive button 38 is released, it will not be executed during the PF setting mode operation thereafter.

As described above, the setting item is changed by the PF loop 1 when the mode SW is ON (that is, when the mode switch is set to "0"). "0" for both mode SW and drive SW
When the state in which is set continues for a predetermined time (2 seconds in this embodiment), the process proceeds to the PF setting end process, and the set special function is confirmed (written in the EEPROM 106).
It should be noted that the count and display of the time until the process proceeds to the PF setting end processing are S1513, S1515, and S1519 in FIG.
The same as (S1717, S1719, S172)
1).

[PF Display Processing] FIG. 18 shows the P process executed when the normal exposure mode is advanced to the PF setting mode.
It is a flow chart which shows F display processing. The PF display process is executed when the mode button 40 and the drive button 38 are simultaneously pressed to display the ISO sensitivity and a predetermined time elapses and then the mode is changed to the PF setting mode in the operation state in the normal exposure mode.

In FIG. 15, when the count value of the PF timer exceeds the predetermined value (31) (that is, when the mode button 40 and the drive button 38 are continuously pressed for 2 seconds), S15
At 27, "1" is set to the PF mode flag and the PFINM flag. Then, when the SW operation display loop of FIG. 15 is executed next while the mode button 40 and the drive button 38 are still pressed, the process proceeds to the PF loop in S1505, and further, the PF of FIG. The process proceeds from S1715 of the loop to the PF display process of FIG.

In the PF display process, first, [PF] is displayed to indicate the shift to the PF setting mode, and "1" is set to the mode SWM flag described later. At this point, if the Tv / Av button 30 has not been pressed (S1803: clear SW = “1”), the process returns to the place where the SW operation display loop branched to the PF display process is called.

In the camera of this embodiment, when the Tv / Av button 30 is pressed while the mode button 40 and the drive button 38 are pressed and the [PF] is displayed on the external display LCD panel 34, the special setting All functions are cleared and set to default values. S1805-S
1815 is a process therefor. If the Tv / Av button 30 is pressed (S1803: clear SW = “0”),
"0" is set in the mode SWM flag. S180
The PF timer is set to 0 only when the processing after 5 is performed for the first time.
In order to set, the processing is branched by the PFINM2 flag in S1807. That is, only the first time, PF
INM2 = “0”, and PFINM2 = after the second time.
Since it is "1", the PF timer is not reset. The processing of S1811 to S1815 is performed by S1515 to S1519 of FIG. 15 or S171 of FIG.
In the same processing as 7 to S1721, the remaining time until proceeding to the PF all clear processing for clearing the setting is displayed in a graph. When a predetermined time elapses, that is, when the count value of the PF timer exceeds 31, the process proceeds to the PF all clear process, and the set value is returned to the default value.

"PF Loop 1" FIGS. 19A and 19B are flowcharts showing the processing of the PF loop 1 for controlling the setting of the special function and the display of the setting contents. In the camera of the present embodiment, if the setting operation is not performed for one minute or more during operation in the PF setting mode, all the setting contents during the operation in the PF setting mode are canceled, and immediately before shifting to the PF setting mode. The setting contents of are retained as they are. Therefore, first, in S1901, it is determined whether the PF end timer is 1 minute or longer. The PF end timer is set to P as shown in S1701 to S1707 of FIG.
It is reset each time any of the modes SW, UPSW, and DOWNSW for performing F setting is determined to be in the ON state.
That is, the mode button 40 or the up / down lever 28
Every time is operated, 0 is set in the PF end timer. Therefore, the mode button 40 is also the up / down lever 28.
If it is not operated for more than 1 minute, S1901
To PF cancel processing.

On the other hand, during the operation in the PF setting mode, the process proceeds from S1901 to S1903. First, S190
In 3, the PFINM flag is set to "0" and the PF timer is set to the count value 0. The PFINM flag is set in S1 of FIG. 15 when the exposure mode is changed to the PF setting mode.
It is set to 1 at 527 and the PF is set at S1715 of FIG.
It controls the branch to the display process. If the mode button 40 and the drive button 38 are still pressed after the shift to the PF setting mode, the PFINM flag = “1”, and therefore the process always proceeds from S1715 to the PF display process. Further, once the mode button 40 or the drive button 38 is released, the PF display process is no longer performed, and S171 is executed.
The process proceeds from 5 to S1717, and the PF setting end process can be executed.

In order to shift from the PF setting mode to the exposure mode, the mode button 40 and the drive button 38 must be simultaneously pressed for a predetermined time. The PF timer counts this time, and S1711, S in FIG.
As can be seen from 1713, the PF timer is set to 0 once the mode button 40 or the drive button 38 is released. Next, S1905 and S1907
Then, it is determined whether the up / down lever 28 is operated. When the up / down lever 28 is operated to the up side, the UPM flag is set to "1" in a U / D loop described later. When operated to the down side, D
"1" is set to the OWNM flag.

If the up / down lever 28 is not operated, the setting item of the special function is changed by the operation of the mode button 40 in S1909. In the camera of this embodiment, as a special function whose setting can be changed, (A) ISO
Five items are provided: sensitivity, (B) learning change level, (C) AF focusing sound, (D) learning, and (E) learning clearing. These five items are sequentially (A) each time the mode button 40 is pressed in the PF setting mode,
When (B), (C), (D), and (E) are selected, and when the mode button 40 is pressed again while (E) is selected, (A) is selected. .

Next, in step S1911, the mode SWM described above is entered.
The U / D loop is executed only when the flag is 0. In the U / D loop, the operation of the up / down lever 28 changes the data in the setting item. In the camera of this embodiment, the mode button 40 and the up / down lever 2
Only when one of the eight is operated, the setting item or the data is changed. For this reason, whether or not to call the U / D loop is determined in S1913 by the mode SWM flag. In addition, mode SW
The M flag is changed in the PF mode UP processing of S1909 (details will be described later). S1915 ~ S19
At 27, the set item and its data are displayed. If the setting item is (A) above, the film IS
O sensitivity is displayed. When the setting item is (B), numerical values 0 to 4 corresponding to the selected combination of the learning level and the number of times are displayed. When the setting item is (C) above, “0” (the electronic buzzer 108 when focusing is performed)
Sound) or “1” (when the subject is in focus, the electronic buzzer 108
In addition to the display of (Do not sound), the buzzer sounds periodically when "0" is selected, and the buzzer does not sound when "1" is selected.
The settings can be confirmed auditorily. For setting item (D), "0" (learn), "1"
In addition to the numerical display (not learned), the learning contents are turned on and off so that the setting contents can be visually confirmed easily. In the case of the setting item (E), a picture representing the selected exposure mode and the character "CL" indicating that clear has been set are displayed. PF loop 1
Is a branch from the SW display operation processing loop, and upon completion of the above processing, returns to the place where the SW display operation processing loop was called.

"PF mode UP" FIG. 19C is shown in FIG. 19A.
14 is a flowchart showing a PF mode UP process called in S1909 of FIG. This process is called when the up / down lever 28 is not operated. PF
When the mode UP processing is executed, it is first determined whether or not the mode button 40 has been operated (S1931). If the mode SW is set to "1", the mode SW
"0" is set in the M flag. As a result,
The process proceeds from S1911 of 9A to S1913, and the data can be changed by the up / down lever 28.

When the mode SW is set to "0", the PF mode is incremented only when the mode SWM flag is set to "0" (S19).
37), the setting item is changed. 0 to 4 in PF mode
Since there are 5 types, 0 is set when the PF mode is 5 or more (S1939). Once the PF mode is incremented, the mode SWM flag is set to "1" (S1943). In this way mode button 4
After pressing 0 to change the setting item, press the mode button 4 as it is.
With 0 still pressed, the processing of changing the setting item is not executed in S1935. That is, once the mode button 40
The control is such that the setting items do not change unless is released, and the operability is very good. When the processing is completed, P
Return to where F-mode UP processing was called.

"PF all clear / PF setting end processing"
FIG. 20 is a flowchart showing the PF all clear process and the PF setting end process. The PF all clear processing is the same as the PF display processing of FIG.
It is executed when the count value of the PF timer becomes 31 or more. That is, the mode button 40 and the drive button 38 are simultaneously pressed for a predetermined time to enter the PF setting mode, and the external display LCD
This is executed by further pressing the Tv / Av button 30 for a predetermined time (2 seconds) while [PF] is displayed on the panel 34. In the PF all clear processing, all the data whose settings can be changed in the PF setting mode are returned to the initial values (S2001).

With respect to the ISO sensitivity setting, if a DX film is loaded in the camera, the ISO sensitivity read from the DX code of the film is set as an initial value, otherwise the ISO sensitivity is set to 100 as a default value. Is set. The learning change level is set such that the change level = 0, the number of times 1 = 3, and the number of times 2 = 3 as initial values. Regarding the focusing sound, the electronic buzzer 108 is set to be sounded in the initial setting, and the learning is performed in the initial setting regarding the presence / absence of learning. Regarding the learning clear flag, in order to clear learning for each of the four exposure modes of person, landscape, moving body, and proximity, "1" is set to all the learning clear flags corresponding to each mode.

The above settings are made on the RAM, and then S
In the PF setting end processing after 2011, the data in the RAM is written in the EEPROM 106. The ISO sensitivity, the learning change level, the presence / absence of focusing sound, and the presence / absence of learning, which are unrelated to the exposure mode, are set in the PF setting mode.
The changed data on the RAM directly corresponds to the data on the EEPROM. Therefore, the data in the RAM is directly written in the EEPROM (S2011). On the other hand, in the learning clear, since the value of the learning clear flag is changed for each mode, only when the value of the learning clear flag (X) corresponding to each mode is 1, the GENPSF on the RAM is changed.
Rewrite the contents of T (X) and STDYCNT (X),
Further, it is written in the EEPROM (S201
3 to S2019). When the above processing is completed, the processing proceeds to S2111 in FIG. 21, and various flags and counters are reset. Here, "1" is set to the flag PFOUTM flag indicating that the PF setting mode is changed to the exposure mode. PF all clear processing is S
It is a branch from the W operation display loop. Therefore, when the PF all clear process is completed, the process returns to the place where the SW operation display loop is called.

"PF Canceling Process" FIG. 21 is a flow chart for explaining the PF canceling process. In the camera of this embodiment, the special function is set in the PF setting mode, and the set contents are changed by pressing the mode button 40 and the drive button 38 simultaneously for a predetermined time.
Written to EPROM (see FIGS. 17 and 20),
The PF setting mode ends. However, if the PF setting mode is interrupted by any other method (that is, if the main button 36 is set to the OFF position during operation in the PF setting mode, or if the setting operation is not performed for 1 minute or more in the PF setting mode). ), The contents changed in the PF setting mode are not written in the EEPROM 108 and are canceled. In particular, when the setting operation is not performed for 1 minute or more in the PF setting mode, the PF setting mode is automatically changed to the exposure mode, and the data stored in the EEPROM 108 is written in the RAM. When the cancel process is executed, the learning clear flag (X) of each mode is set to "0" so that the learning is not cleared in any mode (S2101). The PF cancel processing is branched from the SW operation display loop. Therefore, when the PF cancel processing is completed, the processing returns to the place where the SW operation display loop is called.

"U / D loop processing" FIG.
7 is a flowchart showing a U / D loop for changing data by operating a down lever 28. When the down switch 80 is turned on (when DOWNSW is set to "1"), the DOWNM flag (DOWN
The N memory flag) is set to "1" and the UPM (memory) flag is set to "0". On the other hand, UPS
When W is set to "1", the UP memory flag is set to "1" and the DOWN memory flag is set to "0".
Is set (details will be described later). Therefore, when the up switch 78 is on, the UP loop flag is set to "1".
Is set, UP loop processing is performed, and DOWN loop processing is not performed (S2201 to S2205). on the other hand,
If the down switch 80 is on, UP
The loop flag is set to "0" and only the DOWN loop processing is performed (S2207 to S2211). When the above process is completed, the process returns to the place where the U / D loop is called.

"UP Loop" FIG. 23 is a flowchart showing the processing of the UP loop called by the U / D loop (FIG. 22). When the up switch 78 is off (S2301: UPSW = “1”), the data is not changed, and the UP memory flag indicating that the up switch 78 is off is set to “0” (S230).
3) Return to the U / D loop. If the up switch 78 is on (S2301: UPSW = “0”), it is determined whether the up switch 78 was on when the UP loop was called last time (S2305), and if it was also determined to be on last time (UP) Memory flag = "1"), U / D
The process proceeds to the timer loop. U / D loop is almost 64
Since it is repeated at a cycle of ms (twice every 128 ms),
Up switch 78 when UP loop is called
When the data is changed only in the state of, for example, when the up switch 78 is held in the on state, that is, the operator holds the state while operating the up / down lever 28 in the up direction. If this happens, the data will be changed in a very short time. To prevent this, when the up switch 78 or the down switch 80 is continuously turned on, the U / D timer loop is used to softly extend the cycle. When the UP memory flag is "0", the data is changed by the data U / D processing, and the UP memory flag indicating that the up switch 78 is turned on is set to 1 and simultaneously the down switch 8 is set.
U / D used in U / D timer loop by setting "0" to DOWN memory flag indicating that 0 was off
The count value of the timer is set to 0 (S2305 to S230)
9).

"DOWN loop processing" FIG.
It is a flowchart which shows N loop. S2401 to S240
In 2409, almost the same processing as in FIG. 23 is performed according to the on / off state of the down switch 80.

"U / D timer loop processing" S2411-
S2417 represents the processing of the U / D timer loop. In the U / D timer loop, each time this processing is executed (S2417), when the count value of the U / D timer becomes 8 or more (S2411), the data of the special function is changed (S2413). That is, when this process is executed eight times while the up / down lever 28 is being operated, the data is changed according to the operating direction of the up / down lever 28. When the data is changed, the U / D timer is reset and the count value is set to 0 (S2415).

[Data U / D Processing] FIG.
7 is a flowchart of a data U / D process for changing data in response to an operation of the down lever 28. If the operation is in the PF setting mode (S1501: PF mode flag = “1”), the process branches to the PF data U / D process, and the special function is changed by the combination of the up / down lever 28 and the mode button 40. -The setting is executed. When the PF mode flag = “0”, the process is branched by the operation button which is pressed in combination with the up / down lever 28.
When operating the up / down lever 28 while pressing the mode button 40, the exposure mode is changed (S
2503, S2505). When operating the up / down lever 28 while pressing the drive button 38, the photographing mode is changed (S2507, S2509).
Up / down lever 28 while pressing hyper button 52
When is operated, the exposure is corrected (S251).
1, S2513). Also, simply up / down button 2
When only 8 is operated, (1) the shooting mode is person
If it is one of landscape, moving object, proximity, and program, program shift is executed (S2517, S251).
9), (2) If the shooting mode is automatic or manual, the Tv value or Av value is changed (S252).
1, S2523, S2524). Which of the Av value and the Tv value is set can be switched by operating the Tv / Av button 30. After the above processing is performed, the process returns to the place where the data U / D processing is called.

"PF data U / D processing" FIG.
9 is a flowchart of PF data U / D processing for changing data of each item of PF (special function) in the setting mode. The data of the special function item set by the operation of the mode button 40 in S1909 of FIG. 19 is changed (S2601, S2603). If the setting item is ISO sensitivity change, the up / down lever 28
The ISO sensitivity changes stepwise by the operation of (S26
05). If the Tv / Av button 30 is pressed while setting the ISO speed, the initial value of the ISO speed (when DX film is loaded in the camera, the DX code DX
Value, otherwise, initial value = 100) is set. When the setting item is the learning change level, the variable corresponding to the combination of the change level and the number of shutters is set to any one of 0 to 4 by operating the up / down lever 28. Here, the first level of change level is about 0.
If the program shift amount actually set by the photographer is equal to or more than the change level selected here, the program shift of 5 Ev is learned, and exposure is performed the number of times indicated by the number 1, and , If the set program shift amount is less than the selected change level,
When the number of exposures indicated by the number of times 2 is performed, learning is performed (S2607). If the setting item is AF focus ON / OFF, the focus is turned on by operating the up / down lever 28.
The N prohibit flag is toggled between "0" and "1" (S
2609). If the setting item is the learning prohibition, the learning prohibition flag is toggled between "0" and "1" by operating the up / down lever 28 (S2611).
When the setting item learning clear is set, the external display LCD
A picture display representing the shooting mode is displayed on the panel 34, and by operating the up / down lever 28, one or all four modes for clearing learning is selected, and the Tv / Av button 30 is pressed. By pressing the button, clear setting is made (S2613).

"P shift U / D processing" FIG. 27 is a flowchart of the P shift U / D processing for setting the program shift. In the camera of the present embodiment, the program shift is not performed when the exposure mode is the green mode, and therefore the processes after S2703 are not performed (S2701: P shift prohibit flag =
"1"). When the operation direction of the up / down lever 28 is the forward direction, the Tv value does not exceed the maximum value and the Av value does not reach the minimum value (S2705: TvMA
X = “0”, S2707: AvMIN = “0”), and shifting is possible. When the P shift direction bit stored in the RAM is negative, the P shift amount is decreased by 0.5 until the P shift amount becomes zero. When the P shift amount becomes 0, the direction bit is changed to positive (S2717 to S2721). When the direction bit is positive, 0.5 is added to the P shift amount unless the maximum value of the P shift amount becomes 154/8 or more (S27).
13, S2715). When the operating direction of the up / down lever 28 is negative, the Tv value is larger than the minimum value and Av
It is possible to shift only when the value does not exceed the maximum value. If the P shift direction bit in RAM is positive,
Reduce by 0.5 from the P shift amount. However, when the P shift amount becomes negative as a result of this, since the data on the RAM is represented by a binary number, data processing is performed so that the data is represented by the negative direction bit and the absolute value of the shift amount. (S272
9-S2733). When the direction bit is negative, 0.5 is added to the P shift amount unless the P shift amount becomes equal to or larger than the maximum value (S2735, S2737).

[Exposure Correction U / D Processing] FIG. 28 is a flowchart of the exposure correction U / D processing. Depending on the operating direction of the up / down lever 28, the upper limit Xv =
Xv is increased by 0.5 in increments of 3.0 (S2801-S
2805), in the negative direction, Xv is decreased by 0.5 until the lower limit Xv = −3.0 (S2801 to S2807).

"P shift graph display processing" FIG. 29 is a flowchart showing the P shift graph display processing for displaying the set program shift amount in a graph. In the program shift graph display, the data of the P shift display table shown in FIG. 31 is read out and displayed based on the shift direction / amount of the origin and the program shift direction / amount set on the basis of the origin. In addition, in FIG. 31, a black circle represents a lighting portion, and a black circle in which a radial line is drawn further indicates that the black circle is blinking. The data specified by Y and Z in FIG. 31 is displayed on the external display LCD panel 34 and the viewfinder display LCD panel. In FIG. 29, the direction bit of the origin and the shift amount corresponding to the set exposure mode are read from the RAM (S2901 to S2905), and the Y value of FIG. 31 is calculated from the origin direction bit and the origin shift amount ( S2907 to S2911). Next, Z in FIG. 31 is calculated from the P shift direction bit, the P shift amount, and the value of Y (S2913 to S2917). Note that Z is negative or 1
When it is 1 or more, Z = 0 and Z = 10 are set (S2919 to S2925). Based on Y and Z obtained as described above, the display data of the display table of FIG. 31 is written in the RAM for LCD display (S2
927, S2929).

[Exposure Compensation Display Processing] FIG. 30 is a flowchart for explaining the exposure compensation display called in S1623 of FIG. "1" is set to any of the Xv zero flag, the Xv plus flag, and the Xv minus flag according to the set exposure correction value Xv (S300).
1 to S3011). When the hyper button 52 is pressed, HYP
When SW is set to "0", the exposure correction value X
v is displayed numerically (S3013, S3015), and the exposure correction graph display process of S3031 and subsequent steps is executed.

When "1" is set in HYPSW, if the exposure correction value is 0, no graph is displayed (S3013, S3017, S3019), and the process is SW.
The process proceeds to S1624 of operation display 1. When "1" is set in HYPSW and the main button 36 is at the PICT position, "+" or "-" is set depending on whether the Xv is positive or negative.
Mark is displayed on the external display LCD panel 34 and the finder display LCD panel 62 (S3021 to S3).
027). Hyper SW is OFF, main button 36 is O
When it is at the N position, the process proceeds to the exposure correction graph display (S3021: PICTSW = 1). In the exposure correction graph display, using the data of the exposure correction graph display table shown in FIG. 40, a graph is displayed on the external display LCD panel 34 and the in-viewfinder display LCD panel 62 according to the correction amount. Data in the display table of FIG. 40 is selected from the exposure correction value Xv, the scale is displayed on the external display LCD panel 34 and the in-finder display panel 62, and the selected data of FIG. 40 is displayed. The exposure correction value that can be displayed in the graph is in the range of -2.0 Ev to +2.0, but the range of exposure correction value that can be set is -3.0.
It is set to Ev to +3.0 Ev. Further, when the correction value exceeds the area of the graph display, a black circle mark is displayed blinking at the end point of the graph to indicate that it is outside the area. When the above processing is completed, SW
The process of S1624 of the operation display 1 is executed.

[PF timer display] FIG. 32 shows a PF timer display process for displaying the remaining time when the drive button 38 and the mode button 40 are simultaneously pressed to enter the PF setting mode and when the PF setting mode is exited. 2 is a flowchart showing The switching between the PF setting mode and the exposure mode is switched when the count value of the PF timer becomes a predetermined value (31) or more (FIGS. 15 and 1).
8). Therefore, based on the numerical value of the PF timer, FIG.
RAM for display by selecting the PF timer display data shown in
Is written in the display area, a graph corresponding to the remaining time is displayed on the external display LCD panel 34 (S32).
01, S3203).

[AE Mode U / D Processing] FIG. 34 is a flow chart of the AE mode U / D processing for selecting the exposure mode by the up / down lever 28. S
In 3401, processing is divided according to the direction in which the data is changed, that is, according to the operation of the up / down lever 28. In S3403, the main button 36 is PICT
The exposure mode is classified into the picture mode (PICT mode) or the full spec mode (FULL mode) depending on the position or the ON position. In the exposure mode, on the RAM, as shown in FIG. 33, any one digit of 8-bit data is set to 1
Is set by setting the other to 0. The 8-bit data corresponding to the exposure mode is shown as the exposure mode [8-bit data]. In the PICT mode, the green mode [00000001] and the moving object mode [00001].
000] or the like, and in the FULL mode, it is expressed as the auto mode [00000010]. When the above 8-bit data is represented by a decimal number and shown as an exposure mode (decimal number), it can be represented as a green mode (1), a moving object mode (8), an auto mode (2), and the like.
From FIG. 33, for example, in the PICT mode, when shifting left from the green mode [0000001],
Portrait mode [00000010], Landscape mode [000
00100], the moving object mode [00001000], and the proximity mode [00010000]. In this embodiment, P
Since there are five exposure modes set in the ICT mode, the maximum value of 8-bit data is [00010000].
In S3405 of FIG. 34, when the value of the PICT mode becomes 16 or more, there is no exposure mode corresponding to the data that has been left-shifted, so the reset is returned to 1. Thereby, even if the up / down lever 28 is continuously operated in the direction in which the data changes as described above,
It is possible to select the green mode next to the proximity mode, which greatly improves the operability. S3415 ~ S3
The processing of 419 is the same as the above in the FULL mode. Also, S3421
The process of S3433 is a process when 8-bit data is right-shifted, and in principle, the same process as the above is performed.

"AE Mode Setting Process" FIG.
5 is a flowchart showing an AE mode setting process for converting the value of the PICT mode or the FULL mode set in the AE mode U / D process of No. 1 into the variable AE mode. In the AE mode U / D processing, the PICT mode is represented by binary numbers [00000001] to [00010000], and the FULL mode is represented by [00000001] to [00000100]. The AE mode setting process is a process for expressing the PICT mode and the FULL mode by one type of variable "AE mode". First, the initial value of the "AE mode" is set by the position of the main button 36 (S3501, S3503, S350).
7). Next, the value of the PICT mode or the FULL mode set by the AE mode U / D of FIG. 35 is put into the variable N (S3505, S3509). Thereafter, N is right-shifted until N = 1, and the number of shifts is added to the initial value of the AE mode, so that A as shown in FIG.
The relationship between the E mode and the exposure mode is obtained.

"P shift clear processing" FIG.
14 is a flowchart illustrating a P shift clear process called in S1619 of FIG. By pressing the Tv / Av button 30 independently, the set program shift amount is canceled and the program returns to the origin position. In the camera of this embodiment, when the Tv / Av button is pressed while the hyper button 52 is being pressed, the exposure correction is cleared, so when the hyper button 52 is not pressed (S3801:
The program shift is cleared only for HYPSW = "1".

"Exposure correction clearing process" FIG.
11 is a flowchart illustrating an exposure correction clearing process called in S1625 of FIG. Hyper button 52 and Tv /
By simultaneously pressing the Av buttons, the exposure correction value Xv is set to 0 (S3901 to S3905).

"Main Button Position and Initial Display Screen" FIGS. 60A to 60C show the external display LCD 34 and the viewfinder display LCD when the main button 36 is at the PICT position.
An example of the display screen of the panel 62 is shown. FIG. 60A shows a state in which the main button 36 is placed in the PICT position.
60B and 60C show the LCD in the viewfinder at that time.
Display screen of panel 62 and external display LCD panel 34
The display screen of is shown. In this example, the portrait mode is selected as the exposure mode.

61A to 61C, the main button 36 is turned on.
An example of the case of being in the position is shown. 61B and 61C
Shows the display examples of the external display LCD panel 34 and the in-finder display LCD panel 62, respectively. As will be described in detail later, in this example, the program mode is selected as the exposure mode, and further, −0.
It can be seen that the exposure correction of 5 Ev is set.

FIG. 62 is similar to FIG. 60C in that the main button 36
External display LCD panel 3 when is in the PICT position
4 shows a display example. Also in this example, the portrait mode is still selected as the exposure mode. From this display screen, the learning function is turned on, and it is already +0.5.
It can be seen that the program shift of Ev has already been learned. In addition, positive exposure compensation is performed. The display of the program shift and the display of the exposure compensation will be described in detail later.

"PF setting mode display process" FIG. 63A to FIG.
Reference numeral 63F shows a display on the external display LCD panel 34 when shifting to the PF setting mode processing. By the PF timer display process called in S1519 of FIG.
The PF timer display data of FIG. 37 is set in the RAM,
Displayed (FIGS. 63A-63E). The ISO sensitivity is displayed in step S1517 of FIG. 15 until the PF setting mode is entered. Further, all other displays are turned off and only necessary data are displayed. In the case of the camera of this embodiment, the time from the display of 9 dots to the disappearance of all 9 dots is about 2 seconds. Predetermined time (about 2
Sec) has elapsed and all the dots have disappeared, the PF of FIG.
The display process is executed, and as shown in FIG. 63F, [P
F] is displayed. Here, when the mode button 40 and the drive button 38 are released, the display for changing the ISO sensitivity, which is the first setting item in the PF setting mode, is displayed (see FIG. 65A).

"Display of PF all clear processing" In the PF setting mode, when [PF] is displayed, Tv
When the / Av button 30 is pressed, P is pressed in S1815 of FIG.
The F timer display is called and the dot is displayed again (Fig. 64A). Similar to the above process, 9 dots are about 2
When all disappear in seconds, the setting contents of PF (special function) are all cleared (FIG. 20: PF all clear processing), and CL is displayed on the external display LCD panel 34 as shown in FIG. 64B.

[Setting of Special Function and Display Processing] As described above, while operating in the PF setting mode, the mode button 40
Is used to select a setting item, and the up / down lever 28 is rotated to change the data in the selected item.

"Setting of ISO sensitivity" FIGS. 65A and 65B
Shows a display screen for changing ISO sensitivity. By operating the up / down lever 28, the data changed in S2605 of the PF data U / D processing of FIG. 26 is S1 of FIG. 19B.
Displayed at 919. In the figure, ISO 200 (FIG.
FIG. 65B shows an example in which (A) is changed to ISO100 (FIG. 65B). In addition, [1] indicating the setting item is displayed at the same time. As already mentioned, Tv
When the / Av button 30 is operated, the ISO sensitivity has an initial value (D
X value or ISO = 100) is set.

"Setting of number of learning times" FIGS. 66A and 66B are
This is a display for setting the number of times of learning. [2] indicating the setting item is displayed, and the value from 0 to 4 indicating the combination of the change level and the number of times is changed to the up / down lever 2
Set by the operation of 8. The combination of the change level and the number of times is set in S2607 of FIG. 26, and the display is shown in FIG.
This is performed in S1912 of 9B.

"Setting of Presence / Absence of Focusing Sound" FIGS. 67A and 67B
Is a display relating to whether or not to sound the electronic buzzer 108 when focusing. A setting item [3] is displayed, and the character Sd is used to inform the operator that the sound is set. "1" is set when the electronic buzzer 108 sounds, and "0" is set when it does not sound. Since it is difficult to know which one is set only by the flag alone, when "1" is set, the electronic buzzer 108 is sounded at a predetermined time interval together with the display of FIG. 67B. The operability is improved. The setting is performed in S2609 of FIG. 26, and the display and driving of the electronic buzzer 108 are performed in S1923 of FIG.

68A to 68F show modifications of the display relating to the setting of the electronic buzzer 108 at the time of focusing. In this modification, when the flag indicating that the electronic buzzer 108 sounds is set to “1”, the sound character string is divided and sequentially displayed, so that the electronic buzzer 10 can be displayed during focusing.
8 is set to ring. This Sound display normally uses a 2-digit display area consisting of 7 segments each for displaying the Av value, and it is not necessary to provide a segment for displaying the alphabet. Note that the flags are set as shown in FIG.
6 is performed in S2609, and the display is S1923 in FIG.
It is done in.

[Selection of Learning Function] FIGS. 69A and 69B show
This is a setting for whether or not to learn the program shift. [4] indicating a selection item is displayed, and when learning is performed (that is, when the learning prohibition flag is set to “0”), a picture display such as NOTEBOOK facilitates grasping the setting contents. There is. The learning function is selected as shown in FIG.
No. S2611, and the display is S1925 in FIG. If the flag is changed from "learning" to "not learning" after learning, the learned program shift amount is not cleared but fixed.

"Clearing the contents of learning" FIGS. 70A and 70B
Shows a display for clearing the learned contents. The selection item [5] is displayed, and the picture of the note and the character CL blink. In this state, by operating the up / down lever 28, one or all of four modes in which the learning function is effective is selected, and T
The data clear setting is completed by pressing the v / Av button 30. When learning clear is set, as shown in FIG. 70B, the picture of the note disappears and the character CL is changed to a lighted display. The setting is performed in S2613 of FIG. 26, and the display is performed in S1927 of FIG.

"Selection of exposure mode" 71A to 71E
Shows the display contents displayed on the external display LCD panel 34 when the up / down lever 28 is operated while pressing the mode button 40 when the main button 36 is at the PICT position. 71A, 71B, 71C, 71D, 71
Green mode, portrait mode, distant view mode,
It supports moving object mode and proximity mode. 71F shows the in-viewfinder LCD display panel 62 in the person / distant view / proximity mode, and FIG. 71G shows the display in the moving mode.
H indicates the display in the green mode.

[Display Example of Exposure Correction in PICT Mode] FIGS. 72A and 72B show display examples when the main button 36 is at the PICT position (for example, when the person mode is selected). FIG. 72A shows a display on the viewfinder display LCD panel 62. The amount of program shift is
It is indicated by a scale and dot display. Further, the Tv value / Av value calculated based on the shifted program is displayed above. FIG. 72B shows a display on the external display LCD panel 34. On the external display LCD panel 34,
In addition to the information on the LCD panel 62 in the viewfinder, the number of films, the drive mode (shooting mode), and the picture in the AE mode are displayed.

When the hyper button 52 is pressed in the above state, the exposure correction is displayed. 73A, 73
B is a viewfinder display L with exposure compensation
The display of the CD panel 62 and the external display LCD panel 34 is shown. In this example, the exposure correction is -2.0 Ev. The scale on the display panel is 0.
Since it corresponds to 5 Ev and the center of the scale corresponds to exposure correction 0, in this example, the dot is lit at the minus end of the scale. The external display LCD panel 34 is adapted to display a numerical value of the correction value.

In the camera of this embodiment, the exposure correction value is -2.0 Ev to +2.0 Ev on the graph display. However, in reality, the exposure correction value can be set in the range of −3.0 to +3.0 Ev beyond the range of the graph (see FIG. 28). Therefore, when the correction value exceeds the range of the graph, it blinks at the end point of the graph on the exceeded side. 74A and 74B show an example when the exposure correction value is -2.5. In this case, the black circle blinks at the minus side end point. 75A and 75B show an example in which the exposure mode is displayed by releasing the finger from the hyper button 52 after setting the exposure correction value. The "-" mark that indicates that the exposure compensation is on the negative side is lit.
Further, while pressing the hyper button 52, press the Tv / Av button 3
When 0 is pressed, the set exposure compensation value is reset to 0.

[Display Example of Exposure Compensation in Program Mode]
76A, 76B, 77A, 77B, 78A,
FIG. 78B shows a case where the exposure mode is the program mode.
A normal display (FIGS. 76A and 76B), a display during exposure correction (FIGS. 77A and 77B), and a display after exposure correction value setting (FIGS. 78A and 78B) are shown. In the normal display, the display composed of scales and dots is not displayed, but once the exposure correction value is set, the exposure correction amount is displayed in a graph in the normal display state. Even in the exposure correction in the program mode, the exposure correction value can be set beyond the display range of the graph as in the case described above, and in that case, a black circle blinks at the end point of the graph. The blinking display of the black circle is performed even when the finger is released from the hyper button 52 and the normal display state is achieved. Also, in the program mode, the program shift is possible, and when the program is shifted, an overline is displayed on the Tv / Av display portion of the external display LCD panel 34, and the Tv value of the in-finder display LCD panel 62 is displayed. -The Av value is underlined (when the shift amount is 0, the overline / underline is not displayed).

[Display Example of Exposure Compensation in Auto Mode] FIG. 7
9A, FIG. 79B, FIG. 80A, FIG. 80B, FIG. 81A, and FIG.
1B shows a normal display (FIGS. 79A and 79B) when the exposure mode is the auto mode, and a display during exposure compensation (FIG. 80).
A, FIG. 80B), display after setting the exposure correction value (FIG. 81A,
Figure 81B) is shown. In normal display, the display consisting of scales and dots is not displayed. On the external display LCD panel 34, the Tv value / Av value can be changed by operating the up / down lever 28 (that is, whether the shutter priority or the aperture priority is set). Alternatively, Av is indicated by adding an arc-shaped overline, and on the viewfinder display LCD panel 62, the Tv value or Av value is indicated by underlining. The setting of which of the Tv value and the Av value can be changed can be switched by operating the Tv / Av button 30.

The exposure correction is the same as in the program mode described above. Even in the exposure correction in the auto mode, the exposure correction value can be set beyond the display range of the graph as in the case described above. In that case, a black circle blinks at the end point of the graph. The blinking display of the black circle is performed even when the finger is released from the hyper button 52 and the normal display state is achieved.

[Graph display in manual mode] FIG.
2A, FIG. 82B, FIG. 83A, FIG. 83B, FIG. 84A, and FIG.
4B is a display when the Tv value is set by the up / down lever 28 when the exposure mode is the manual mode (FIGS. 82A and 82B), and a display when the Av value is set (FIGS. 83A and 83B). , A display (FIG. 84A, FIG. 84B) when the proper exposure is set is shown.

In the manual mode, if the Tv value can be changed by the up / down lever 28, the Tv display on the external display LCD panel 34 is overlined in an arc, and the Tv value is displayed in the viewfinder. Display LCD
The Tv value is underlined and displayed on the panel 62 (FIGS. 82A and 82B). In contrast, FIG. 83A and FIG.
In the case of 3B, the Av value / Av display is underlined / overlined. In the manual mode, there is no exposure correction, but in the normal display state, the graph display with scales and dots is performed.
In the camera of this embodiment, the AE is set even in the manual mode.
A calculation is being performed. With the center of the displayed scale as the proper exposure value for calculation, if the set value is overexposed, dots are displayed on the "+" side of the scale. 1
The scale corresponds to 0.5 Ev.
In the case of B, overexposure is 1.0 Ev. still,
The scale is -2.0Ev to + 2.0E centered on the proper exposure value.
Display by dots is possible within the range of v. When the range is exceeded, as shown in FIGS. 83C and 83D, the “-” mark is blinked to indicate that the range is underexposed (in the drawings). Radial lines around the "-" mark indicate that the "-" mark is flashing.) If the exposure is overexposed, the "+" mark is also displayed. Is designed to blink.

84A and 84B are diagrams showing a case where the manually set exposure value and the calculated exposure value match. To match the manually set value with the calculated exposure value,
The set value may be changed by operating the up / down lever 28 so as to reduce the number of displayed dots. In the camera of this embodiment, in addition to this, by pressing the hyper button 52 in the manual mode, the proper exposure value obtained by calculation is set.

"AE operation" Next, A is called in S1319 in "RESTART" shown in FIGS. 13A and 13B and S1415 in "release processing" shown in FIG.
The processing by the E (automatic exposure mode) calculation subroutine will be described with reference to the flowcharts shown in FIGS. 41A, 41B, 41C and 41D.

In this embodiment, as the exposure mode, the main button 36 is switched to the PICT position and the pict switch 11 is pressed.
It has a green mode, a portrait mode, a landscape mode, a moving object mode, and a proximity mode whose settings can be changed when 0b is turned on, and is set when the main button 36 is switched to the ON position and the on switch 110a is turned on. Changeable normal program mode (normal program automatic exposure mode that automatically sets shutter speed and aperture value based on photometric results), auto mode (automatically set aperture value from manually set shutter speed and photometric results) Shutter speed priority automatic exposure mode of lens auto, aperture priority automatic exposure mode that automatically sets shutter speed from manually set aperture value and photometric result), and manual exposure mode. Manual aperture priority automatic exposure mode, manual exposure mode, and It has a lube exposure mode.

In the AE process, first, the CPU on the body side
After the RAM of 20 is initialized and various flags related to photometry and the like are initialized, the lens correction calculation subroutine is called (S4101 to 4105). In this lens correction calculation subroutine, "R" shown in FIG.
In the “lens communication” during the “ESTART” processing, the lens correction calculation processing is executed based on various lens data input from the lens body side CPU 20 (FIG. 11) according to the type of the photographing lens.

Next, the subject brightness data from each sensor (light-receiving element 94) for divided photometry output from the A / D conversion circuit 98 is respectively used as the subject brightness B for calculation suitable for calculation.
v, and the subject brightness for calculation Bv and S
Based on the lens correction value calculated in 4105, the light amount value Lv ′ for each sensor is obtained, and the light amount value L for each sensor is obtained.
From v ', one light quantity value Lv' suitable for the subject is calculated based on the divided photometric algorithm (S4107-).
S4111).

Then, the light amount value Lv is obtained based on the calculation film sensitivity Sv and the calculation exposure correction value Xv which are converted in advance so as to be suitable for the calculation, and the value corresponding to the currently set AE mode (number) is X. Put in (S411
3, S4115).

In S4117, the coefficients a, b, TvL1 etc. corresponding to each AE mode entered in X are set. These coefficients a, b, TvL1, etc. are R of the body side CPU 20.
It is preset in the OM, and if necessary, R
It is read into AM.

In the "person mode (the outline of the program line is shown in FIG. 48A)" branched at X = 1, 2/8 is put in the coefficient a which is the inclination of the program line, and 56 / is put in the coefficient b.
Insert 8. Further, the camera shake limit Tvf is set in the first Tv boundary TvL1, and the optimum photographing A is set in the first Av boundary AvL1.
The v value Avf is entered, the minimum aperture value AvMIN is entered in the second Av boundary AvL2, and the program operation subroutine is called in S4143.

In the "landscape mode (the outline of the program line is shown in FIG. 49A)" branched at X = 2, the coefficient a is 2
/ 8, and the scenery coefficient b is added to the coefficient b. The landscape coefficient b is obtained by (6/8) × Tvf− (2/8) × (AvMIN +1). Further, the minimum shutter speed TvMIN is put in the first Tv boundary TvL1 to set the first Av boundary AvL1.
The minimum aperture value AvMIN + 1 into the second Av boundary Av
The minimum aperture value AvMIN is entered in L2, and the program calculation subroutine is called in S4143.

In the "moving object mode (the outline of the program line is shown in FIG. 50A)" branched at X = 3, the coefficient a is 2
/ 8 and put 5 6/8 in the coefficient b. Further, the camera shake limit Tvf + 1 is set in the first Tv boundary TvL1 and the minimum aperture value AvMIN + 1 is set in the first Av boundary AvL1.
, And the minimum aperture value AvMIN at the second Av boundary AvL2.
Is entered and the program calculation subroutine is called in S4143.

In the "proximity mode (the outline of the program line is shown in FIG. 51A)" branched at X = 4, the coefficient a is 2
/ 8 and put 5 6/8 in the coefficient b. Further, the shake limit Tvf is set in the first Tv boundary TvL1, Av6 (F = 8) is set in the first Av boundary AvL1, and the minimum aperture value AvMIN + 1 is set in the second Av boundary AvL2.
Is entered and the program calculation subroutine is called in S4143.

In the program calculation subroutine called in S4143, the control Tv and the control Av actually used in the control are calculated based on the Tv value and the Av value set for each mode, which will be described in detail later.

On the other hand, when branching to the "green mode" when X = 1, the program shift inhibition flag is set to "1" to inhibit the program line from being shifted in advance. Then, the normal program subroutine is called (S4135, S4137), and the control Tv and the control Av actually used in the control are obtained in this mode.

When branching to the "normal program mode" when X = 5, the normal program subroutine is called without setting "1" in the program shift prohibition flag (S4137).

Furthermore, when branching to the "AUTO mode" when X = 6, an AUTO operation subroutine is called (S4139), and when branching to the "manual mode" when X = 7, a manual operation subroutine is called ( S4141).

Further, whether or not the control Tv and the control Av obtained in the mode selected in S4117 are values which can be used for control is called CHK. It is checked by the TvAv subroutine, and if it exceeds the controllable value, it is converted to the maximum value or the minimum value (S4145). And CHK Data such as whether the EE pulse number is obtained based on the Tv value and the Av value finally determined by the TvAv subroutine, and whether or not the external flash fires, how much light is emitted, and whether the rear curtain synchronization is performed. Send (S
4147, S4149). The EE pulse is a pulse used to stop the diaphragm in correspondence with the diaphragm value Av for control. After that, in step S4151, a quench signal is output during flash photography to set TTL data for stopping the flash emission, and the process returns.

The normal program subroutine shown in S4137 of FIG. 41C will be described with reference to the flowchart shown in FIG. 52A. A program diagram explained in this subroutine is shown in FIG. 52B, for example, and its features are as follows. The shake limit Tvf (= TvL1) is set. It is set so as to be located between the program line (see FIG. 49B) relating to the landscape mode where importance is attached to the depth of field and the program line (see FIG. 50B) relating to the moving object mode where importance is attached to the shutter speed. When the camera shake limit Tvf (= TvL1) is exceeded, it is set so that at least one step or more of program shift is possible.

In the figure, when f = 80 mm and f = 2
Since camera shake is likely to occur near the camera shake limit Tvf (= TvL1) at 8 mm, low Ev that Tv <Tvf
In the range, the shutter speed is fixed at the camera shake limit Tvf to open the aperture to the minimum aperture value, and when the aperture reaches the open value, the shutter speed is slowed down while keeping the aperture open. The shake limit Tvf (= TvL1) at this time
Has been processed by being assigned to the variable TvL1.

In the normal program subroutine, first, the fv calculation subroutine shown in FIG. 42A is called, and the converted focal length fv obtained by converting the focal length f corresponding to the apex value by fv = log (focal length f) / log2 Ask for.

Subsequently, in S5203, Tv = (3/8) × light quantity value Lv + normal coefficient b normal coefficient b = (5/8) Tvf− (3/8) (Av
The calculation Tv is obtained by MIN +1). This calculation formula is, for example, as shown in FIG.
In the program diagram of B, the program line is moved in the shutter axis direction with the change of the normal coefficient b while fixing the inclination.

Then, it is checked whether or not the calculation Tv obtained in S5203 is larger than the maximum shutter speed TvMAX. If it is larger, the maximum shutter speed TvMAX is stored in the RAM of the body side CPU 20 as the calculation Tv, and the shutter speed to be actually set. Is faster, but it means that the maximum shutter speed TvMAX is put in the calculation Tv.
"1" is set to the Tv over flag (S520
5, S5219, S5221).

Further, the CAL of FIG. Since the Av subroutine is called and the calculation Tv is changed, this calculation Tv
Is calculated (S5223), and an appropriate calculation Av corresponding to
Exit to 5215. Further, in S5205, the calculation Tv
Is less than or equal to the maximum shutter speed TvMAX, the calculated Tv is compared with the camera shake limit Tvf. If the calculated Tv is smaller than the camera shake limit Tvf, the camera shake limit Tvf is calculated.
Put it in RAM as v (S5207, S5225),
Proceeds to S5209. If the calculated Tv is larger than the camera shake limit Tvf in S5207, the process advances to S5209.

In S5209, CAL in FIG. The Av subroutine is called, an appropriate calculation Av corresponding to the calculation Tv set here is obtained, and the process proceeds to S5211. S
At 5211, the Av over flag is checked, and if "1" is set in this Av over flag, CA
L Since the Tv subroutine is called and the calculation Av is changed, an appropriate calculation Tv corresponding to the calculation Av is obtained (S5227), and the flow goes to S5215. When "0" is set in the Av over flag, S521
Proceed to step 3 to check the Av under flag. Av
CA when the under flag is set to "1"
L The Tv subroutine is called, an appropriate calculation Tv corresponding to the calculation Av is obtained in accordance with the change of the calculation Av (S5227), and the process proceeds to S5215.

Then, in S5215, the normal P shift operation subroutine shown in FIG. 46 is called to check the presence or absence of program shift. That is, S46
In 02, the program shift amount set by the photographer with the up / down lever 28 is entered as the total program shift amount, and in S4604, the P shift direction bit set by the program shift direction is set to the total P shift amount.
Input as shift direction bit (S4602, S460
4) Proceed to S4603 to check the P shift prohibition flag. In the present embodiment, the program shift is not performed in the green mode, so that FIGS.
When the green mode is selected by X = 0 during the AE calculation of C and 41D, the P shift inhibition flag is set to "1". Therefore, the program shift is not performed and the process returns in S4603. In the normal program (P) mode, program shift is performed, so X
= 5 when this mode is selected, S4135
Jump to and do not set "1" to the P shift prohibition flag. Therefore, it is checked that there is a program shift, and the process proceeds to the previous step without returning in S4603.

Then, in S5217, the calculated operation T
v is converted into a value that is actually used for control, is stored in the RAM of the body side CPU 20 as control Tv, and the calculated operation Av is converted into a value that is actually used in control, is stored in RAM as control Av, and is returned. To do.

Next, the AU shown in S4139 of FIG. 41C is displayed.
The TO calculation subroutine will be described with reference to the flowchart shown in FIG. First, in S5301, FIG.
Check the TvAv mode flag to be set in S2521 of the data U / D subroutine of
When the v-mode flag is set to "1", the aperture priority is selected, and the flow proceeds to S5311. When the v-mode flag is set to "0", the shutter speed priority is selected and the flow proceeds to S5303.

When the shutter speed is prioritized, the manually set setting Tv is put into the control Tv actually used for control (S5303). Then, the setting Tv is converted into a value for calculation, and the value is put into the calculation Tv and CAL Call the Av subroutine, calculate the appropriate operation Av corresponding to the operation Tv,
Further, the calculation Av is put into the control Av (S5305-S
5309) and return. When the aperture is prioritized, the setting Av is put in the control Av (S5311), the setting Av is put in the calculation Av, and CAL is performed. Call the Tv subroutine,
An appropriate calculation Tv corresponding to the calculation Av is calculated, and this calculation Tv is put in the control Tv (S5313 to S5317),
To return.

The manual subroutine shown in S4141 of FIG. 41C will be described with reference to the flowchart shown in FIG. First, in S5401, T to be set in S2521 of the data U / D subroutine of FIG.
The vAv mode flag is checked, and if "1" is set in this TvAv mode flag, it means that the aperture value can be set by the up / down lever 28, so S5
Go to step 419 and if "0" is set, go up /
Since the shutter speed can be set by the down lever 28, the flow proceeds to S5403.

When the shutter speed is set, the setting Tv set by the 1/2 series value processed in steps of 1/2 is set.
In the control Tv, and the setting Av set with the same 1/2 series value is put in the control Av (S5403, S540).
5). Here, the on / off of the hyper (exposure compensation) switch 52 is checked, and if the hyper switch 52 is not on, the process returns with the 1/2 series value.
Therefore, in this case, the photographing is performed by the control Tv and Av based on the value that is manually set in steps of 1/2.

On the other hand, if the hyper switch 88 is turned on to obtain a proper exposure value based on the photometric value, 1
The setting Tv of the / 2 series value is converted into an operation Tv processed in steps of 1/8, and CAL is calculated. The Av subroutine is called to obtain an appropriate calculation Av corresponding to the calculation Tv, and the calculation Av processed in 1/8 step is put into the control Av actually used for control (S5409 to S54).
13). As described above, in the manual exposure mode, when the hyper button 52 is pressed and the hyper switch 88 is turned on and the shutter is released, the exposure can be performed based on the value calculated by the body side CPU 20 in highly accurate steps of 1/8. it can.

Further, the calculation Av is put in the setting Av, and this is set to 1
Since the / 2 series processing is performed (S5415 to S5417) and the process returns, the Av value after this is manually up / down by a 1/2 series value.

The 1 / 2-series processing is performed in steps of 1/2 in manual operation, whereas it is processed in steps of 1/8 in automatic operation. That is, the CPU 20 on the body side is in automatic operation. Since the step of the apex value set by the calculation of is smaller than the step of the apex value that can be manually set, it means that the calculated apex value is rounded to 1/2 step of the manually set apex value.

When the aperture is manually set, the setting A set by the 1/2 series value is processed in steps of 1/2.
v is put in the control Av, and the setting Tv set with the same 1/2 series value is put in the control Tv (S5419, S542).
1). Here, it is checked whether the hyper switch 52 is on or off, and if the hyper switch 88 is not on, the process returns with the 1/2 series value. Therefore, in this case, the shooting is performed by the control Av and the control Tv based on the manually set value processed in steps of 1/2.

On the other hand, when the hyper switch 88 is turned on, the setting Av of the ½ series value is converted into the calculation Tv processed in steps of ⅛, and CAL is performed. Tv
A subroutine is called to obtain an appropriate calculation Tv corresponding to this calculation Av, and the calculation T which is processed in 1/8 step
v is put in the control Tv actually used for control (S54
25-S5429). As described above, in the manual exposure mode, the hyper button 52 is pressed to press the hyper switch 88.
1/8 with high accuracy when releasing while turning on
The exposure can be performed based on the value calculated by the body side CPU 20 in each step.

Further, the calculation Tv is put in the set Tv, and this is set to 1
Since the / 2 series conversion process is performed (S5431 to S5433) and the process returns, the Av value after this is manually up / down by a 1/2 series value.

"Program operation" Sequentially, S of FIG. 41B
The program calculation subroutine indicated by 4143 is shown in FIG.
A description will be given along the flowcharts of 2A and 42B. In this subroutine, the calculation Tv and the calculation Av are obtained according to the mode set by the mode setting operation among the portrait mode, the landscape mode, the moving object mode, and the proximity mode, and the control Tv and the control Av that are actually used in the control are calculated. Convert to.

First, in step S4201, the fv calculation subroutine is called, and the focal length detection mechanism 102 of the taking lens 12 is calculated by the following equation: fv = log (focal length f) / log2.
The focal length f input from is converted into a value that can be used as an apex value to obtain the converted focal length fv. further,
The Tvf calculation subroutine is called, and the camera shake limit Tvf of the shutter speed is obtained from the equation Tvf = (3/4) × fv + 2 (S4203). In addition, the Avf calculation subroutine is called, and Avf = AvMIN + 1 + Avf shift Avf shift = (5/4) × (6.5−fv), where 0 ≦ Av
The shooting optimum Av value Avf is obtained by the formula of f shift ≦ 2. The optimum shooting Av value Avf is a value for determining the optimum aperture value based on the focal length when it is desired to blur the background, or when it is desired to take a clear image of the whole by deepening the depth of field. In other words, it is the absolute amount of narrowing down from opening.

In step S4207, steps S4119 to S4119 in FIG. 41B are executed.
Using the coefficients a, b, etc. corresponding to each AE mode set in S4133, the calculation Tv is obtained by the equation: coefficient a × light quantity value Lv + coefficient b.

This calculation Tv at the predetermined focal length in the selected mode is set to the minimum shutter speed TvMI peculiar to the camera.
It is compared with N and the maximum shutter speed TvMAX, respectively (S4209, 4211). If the above calculation Tv is smaller than the minimum shutter speed TvMIN, this minimum shutter speed TvMIN is put into the calculation Tv, and it is assumed that the minimum shutter speed TvMIN is set although a shutter speed slower than that should be actually set. "1" is set to the Tv under flag (S4213), and S4217 is set.
Proceed to. Further, the above calculation Tv is the maximum shutter speed TvMA
If it is larger than X, this maximum shutter speed TvMAX is put into the calculation Tv, and it is assumed that the maximum shutter speed TvMAX has been set even though the shutter speed actually higher than that should be set, and the Tv over flag is set to "1". Then (S4215), the process proceeds to S4217.

If the calculation Tv at the predetermined focal length in the selected mode is equal to or higher than the minimum shutter speed TvMIN and equal to or lower than the maximum shutter speed TvMAX in S4209, both the Tv under flag and the Tv over flag are set to "1". Without setting, the process proceeds to S4217. S421
7, the CAL shown in FIG. The Av (Av operation) subroutine is called and the operation Tv is calculated based on the operation Tv.
Find an appropriate operation Av corresponding to v.

At S4219, CAL is performed. It is checked whether or not the calculation Av set by the Tv subroutine exceeds the first Av boundary AvL1 calculated by the selected mode. As a result, if the operation Av exceeds the first Av boundary AvL1, the process jumps to S4243 to execute the P shift operation process, check the direction and amount of the program shift, and perform an operation suitable for the program to be shifted. Calculate Tv and calculation Av. If the calculation Av is less than or equal to the first Av boundary AvL1, the process advances to step S4221, and the first Av boundary AvL1 is included in the calculation Av. This determines the Av value, so CAL By calling the Tv subroutine (FIG. 43), T corresponding to the calculated Av value
The v value is calculated (S4223).

In S4225, the calculation Tv obtained in S4223 is converted into the first Tv boundary T calculated in S4203.
Compare with vL1. As a result, if the calculated Tv exceeds the first Tv boundary TvL1, the process jumps to S4243 and P
The shift calculation process is executed, the direction and amount of the program shift are checked, and the calculation Tv and the calculation Av suitable for the program to be shifted are obtained. Further, the calculation Tv is the first T
If it is equal to or smaller than the v boundary TvL1, the process proceeds to S4227 and the value of the first Tv boundary TvL1 is put into the calculation Tv. Since the Tv value is determined by this, in S4229 CAL
The Av subroutine is called again, and the calculation Av corresponding to this calculation Tv is calculated.

Further, it is checked whether or not the calculated Av value is larger than the second Av boundary AvL2 (S423).
1), if the calculation Av exceeds the second Av boundary AvL2, jump to S4243; otherwise, S4233
Then, the value of the second Av boundary AvL2 is set as the calculation Av. Since the calculation Av is determined by this, S42
At 35 The Tv subroutine is called again to calculate the calculation Tv according to the calculation Av. Furthermore, this calculation Tv is compared with the minimum shutter speed TvMIN (S
4237), if the calculation Tv is larger than the minimum shutter speed TvMIN, the process jumps to S4243, and if not, this minimum shutter speed TvMIN is put into the calculation Tv. This determines the Tv value, so CAL The Av subroutine is called again (S4241), and the calculation Av corresponding to this calculation Tv is obtained.

In S4243, the P (program) shift calculation subroutine is called to obtain the shift amount of the program line preset and input to the ROM, and further, the calculation Tv is set as the control Tv actually used for control, and Set the calculation Av as the control Av that is actually used for control (S
4245), and returns.

"CAL Tv ”Next, according to the flowchart of FIG. 43, CAL is a process of setting an appropriate Tv value and restricting the Tv value within a controllable range. Tv (Tv
The calculation) subroutine will be described. First, the Tv under flag and the Tv over flag are cleared (S430
1), the value obtained by the formula of light amount value Lv-calculation Av is put in the calculation Tv (S430).
3).

This calculation Tv is compared with the minimum shutter speed TvMIN and the maximum shutter speed TvMAX peculiar to the camera (S4305, 4307). As a result, if the calculation Tv is smaller than the minimum shutter speed TvMIN, this minimum shutter speed TvMIN is set as the calculation Tv, and the shutter speed slower than that is actually set, but the minimum shutter speed TvMIN is set. As a result, the Tv under flag is set to "1" (S4309), and the process returns. Also, the calculation Tv is the maximum shutter speed TvMAX
If it is larger, the maximum shutter speed TvMAX is set to the calculation Tv, and the shutter speed must be set higher than that, but the maximum shutter speed TvMAX is set.
Is set, the Tv over flag is set to "1" (S4311), and the process returns.

In S4305, the above calculation Tv
However, if the minimum shutter speed TvMIN or higher, S430
7, the calculation Tv is the maximum shutter speed TvMA
If less than or equal to X, return. Therefore, this CA
L The Tv subroutine limits the shutter speed used in the AE calculation program shift to a controllable range.

"CAL Av '' Subsequently, along the flowchart of FIG. 44, CAL is a process of setting an appropriate Av value and regulating the Av value within a controllable range. Av (A
The v calculation) subroutine will be described. First, in S4401, the Av under flag and the Av over flag are cleared, and the value obtained by the light amount value Lv-calculation Tv is set in the calculation Av (S440).
3).

This calculation Av is compared with the minimum aperture value AvMIN and the maximum aperture value AvMAX (S4405, 440).
7). As a result, if the calculation Av is smaller than the minimum aperture value AvMIN, this minimum aperture value AvMIN is set to the calculation Av, and it is assumed that the minimum aperture value AvMIN is set even though the aperture should actually be narrowed down. 1 "is set (S4409), and the process returns.
If the calculation Av is larger than the maximum aperture value AvMAX, the maximum aperture value AvMAX is set in the calculation Av, and the aperture value must be actually increased, but the maximum aperture value Av
Assuming that MAX has been set, the Av over flag is set to "1" (S4411), and the process returns.

In S4405, the operation Av
However, if it is greater than or equal to the minimum aperture value AvMIN, the process proceeds to S4407, and if the calculation Av is less than or equal to the maximum aperture value AvMAX, the process returns. Therefore, this CAL The Av subroutine limits the aperture value used in the AE calculation program shift to a controllable range.

"P shift calculation" The P (program) shift calculation subroutine shown in FIGS. 42A and 42B is shown in FIG.
A description will be given according to the flowchart shown in FIG. First, S46
In 01, call the sub P shift subroutine,
Find the shift amount and shift direction of the learning program line. With this, when the total program shift amount is obtained,
Check the P shift prohibit flag (S4603), and
If "1" is set in the shift prohibition flag, the process returns and exits, and the program shift is not performed. If "0" is set in the flag, the process advances to step S4605 to check whether the entire program shift amount is 0. If the entire program shift shift amount is 0, that is, if it is not necessary to shift the program line, the process returns,
If not, that is, if the program line is to be shifted, all P shift direction bits are checked to determine the shift direction (S4607).

As a result, all P shift direction bits are "1".
Is set and the shift direction is negative, that is, for example, in FIG.
If the program lines indicated by A and 48B are to be shifted in the upper left direction in the figure, a value obtained by subtracting the total P shift amount from the calculation Tv is set in the calculation Tv to set the shutter speed slow (S4623). Furthermore, it is checked whether or not this calculation Tv is smaller than the minimum shutter speed TvMIN. If it is smaller, the minimum shutter speed TvMIN is set in the calculation Tv (S4627), and if not so, the flow proceeds to S4615.

Further, in S4607, when all the P shift direction bits are set to "0" and the shift direction is positive, that is, when the program line shown in FIGS. 48A and 48B is to be shifted to the lower right direction in the figure, , S4609, and sets a value obtained by adding the total P shift amount to the calculation Tv,
Set the shutter speed faster. Furthermore, it is checked whether or not this calculation Tv is higher than the maximum shutter speed TvMAX (S4611), and if it is larger, the maximum shutter speed TvMAX is set in the calculation Tv (S4613), and if not so, the processing proceeds to S4615.

At S4615, the CAL shown in FIG. A
The v subroutine is called to calculate the operation Av, and the Av over flag and the Av under flag are checked in steps S4617 and S4619. As a result,
If the Av over flag is set to "1",
If the Av and Av under flags are set to "1", the process proceeds to S4621 and CAL, respectively. The Tv subroutine is called, and the Tv corresponding to the operation Av at that time is called.
Calculate the value. If "0" is set in both the Av over flag and the Av under flag, the process directly returns.

The program line shown in FIG. 48B is the same as that shown in FIG.
8A is a more detailed view of the person mode described in 8A, and its features are as follows. The first camera shake limit Tvf (= TvL1) is set for both the wide side and the tele side. The wide side is set so as to be suitable for a group photo and a person in a landscape, and both the landscape and the person can be sharply expressed by narrowing down the aperture. The tele side is set to be suitable for portrait and bust-up shooting, and the aperture is opened to make the person stand out. In the normal shooting area, the aperture control level is reversed.

As described above, the program line relating to the portrait mode is set to open the aperture from the low shutter speed range to the camera shake limit on the wide side and the tele side, and at the camera shake limit, the shutter speed is fixed and the aperture is set to the predetermined value. Since the setting is made so that the value can be changed, it is possible to support not only portraits but also general human photography, and it is possible to provide a camera provided with a program line in a person mode in consideration of camera shake prevention and the like. In addition, the change of the aperture value at the limit of camera shake is reduced by 3 steps on the wide side,
Since it is set to narrow down by one step on the tele side,
The wide side can be set to be suitable for group photography and shooting of people in landscapes, and both the landscape and people can be sharply expressed by narrowing down the aperture.

Further, the program line shown in FIG. 49B shows the one in the landscape mode shown in FIG. 49A in more detail, and its features are as follows. You can take in-focus photos from near to distant views regardless of the focal length. In the low-luminance range, the aperture is narrowed down by one step from the full aperture and the aperture is prioritized, and the aperture is narrowed from the second camera shake limit fv to the minimum aperture. By narrowing down one step from the full aperture, the lack of peripheral light quantity is resolved and the image performance is improved.

As described above, in the landscape mode program line, the aperture is set so as to be narrowed from the low shutter speed range to the vicinity of the camera shake limit by one step from the open aperture value at the focal length regardless of the focal length. . For example, at the focal length of 28 mm, the aperture is narrowed down by one step from AvL2 which is the maximum aperture value.

In the landscape mode program line, the exposure value Ev is 6/2 in the part indicated by G after the camera shake limit.
It is set to change with the inclination of. That is, as described above, Tv value = coefficient a × light quantity value Lv + coefficient b, and in the landscape mode, the coefficient a is set to 2 in S4223.
/ 8 is entered, so when the light quantity value Lv increases by 1, T
The v value is increased by 2/8. Further, since Av value = light amount value Lv−Tv value, when the light amount value Lv increases by 1, the Av value is 6 /
Increase by 8. Therefore, the Av value and the Tv value change at a ratio of 6: 2, that is, the program line changes with a slope of 6/2. The numbers in parentheses in the figure are
These are the apex values corresponding to the shutter speed and the aperture, and these apex values are shown in FIGS. 48B and 50.
B, FIG. 51B, FIG. 52B, and FIG. 55C have the same meaning.

Further, the program line shown in FIG. 50B is
FIG. 50A is a more detailed view of the moving body mode shown in FIG. 50A, and the features thereof are as follows. Set the third camera shake limit Tvf + 1 and set the camera shake limit T
The v value is increased by one step from the first camera shake limit.

Further, the program line shown in FIG. 51B shows the program line in the proximity mode shown in FIG. 51A in more detail, and its features are as follows. In the low-brightness range, both wide and tele sides are set as a priority program with one stop narrowing down rather than opening. From the camera shake limit, it is set to F8 regardless of the focal length.

As described above, the program line relating to the proximity mode is such that the aperture is fixed at a predetermined value from the low shutter speed range to the camera shake limit, and the aperture is changed by about one step at the camera shake limit and fixed at F8. Since it is set to control after the camera shake limit, it is possible to obtain a camera having an exposure mode applicable not only to the macro range of the zoom lens but also to the macro lens as a proximity mode. Further, the diaphragm can be set to a value slightly raised or lowered from F8. Further, in close-up photography, the shallow depth of field causes the shutter speed to slow down due to over-narrowing, and camera shake and subject shake are likely to occur. Since the aperture value is narrowed down by about one step and the aperture value is controlled after the camera shake limit, the above-described camera shake and subject shake can be avoided.

"Sub P shift" Here, S46 in FIG.
The sub P shift subroutine shown by 01 will be described with reference to the flowchart shown in FIG. In this subroutine, the shift amount of the origin and the shift amount of the program line due to learning, that is, the shift amount of the entire program is obtained.

At S4501, the main switch 11
There are five modes, Green mode, Portrait mode, Landscape mode, Moving object mode and Proximity mode, which can be changed when 0 is switched to the picture position.
Since it is set corresponding to each of 0 to 4, the person mode in which the program line should actually be shifted (see FIG. 48).
A, 48B), landscape mode (FIGS. 49A, 49B), moving object mode (FIGS. 50A, 50B) and proximity mode (FIG. 51).
In the case of selecting (A, 51B), the value obtained by subtracting 1 from the five AE mode numbers corresponding to X = 0 to 4, that is, the AE mode-1 is set to X.

Further, the origin shift amount and the origin direction bit corresponding to the respective read values are read from the RAM (S4503, S4505), and the P shift direction bit is checked to see if the program shift direction is positive. Whether it is negative is checked (S4507). If it is positive, the process jumps to S4511, but if it is negative, it is determined that the program shift amount is negative, and this is negatively converted, that is, the absolute value is converted to a negative value (S4509).

In S4511, how the origin is changed by "learning" by the origin direction bit is checked. As a result, if the origin shift direction is negative, the negative shift, that is, the absolute value processed origin shift amount is converted to a negative value, and if the origin shift amount is positive, it is used without being negatively converted (( S4513).

Then, the shift amount of the entire program line is obtained by adding the origin shift amount to the program shift amount (S4515). Further, in S4517, it is checked whether or not the entire shift amount is smaller than 0. If it is smaller, the process proceeds to S4517, the entire program shift amount is subjected to absolute value processing, and "1" is set in all P shift direction bits. . Further, in S4515, the entire shift amount is 0.
If it is above, it returns. The absolute value processing prevents the value of the exposure factor for calculation from becoming negative,
The accuracy of each exposure factor is made equal to 1/8 Ev step, and the apex operation of addition and subtraction is facilitated without considering the accuracy of the operation.

[CHK TvAv ”S414 in FIG. 41D
CHK, which is a process for detecting whether or not the calculation Tv and the calculation Av are limit values shown in FIG. The TvAv subroutine will be described with reference to the flowchart shown in FIG. First, in S5701, it is determined whether or not the control Tv value calculated in each mode is equal to the maximum shutter speed TvMAX. If they are equal, the maximum shutter speed TvMAX flag is set to "1" (S4703). If not S
Jump to 4705. In S4705, it is determined whether the control Tv value calculated in each mode is equal to the minimum shutter speed TvMIN, and if they are equal, the minimum shutter speed TvMIN flag is set to "1" (S470).
7) Otherwise, jump to S4709.

In S4709, it is determined whether or not the control Av value calculated in each mode is equal to the maximum aperture value AvMAX. If they are equal, the maximum aperture value AvMAX flag is set to "1" (S4711). If not S4
Jump to 713. In S4713, the control Av value and the minimum aperture value AvMI calculated in each mode.
Judge whether N is equal, and if they are equal, the minimum aperture value AvMI
The N flag is set to "1" (S4715), and otherwise the process returns.

Next, the learning process will be described with reference to FIGS. 55 to 59 and 85 to 90. The learning of the present invention relates to the program shift situation in the program exposure mode. In other words, the number of releases is counted when the photographer releases the program while shifting the program according to his or her preference, and when the number of counts exceeds a predetermined number, the program line is placed in the shift direction. The data to be quantitatively shifted is saved as learning data. Then, after this saving, the shutter speed and the aperture value along the learning program line obtained based on this learning data are set, and further, the program shift and the learning save are executed on the basis of this learning program line. is there.

The program shift in this embodiment is
This means changing the combination of the shutter speed and the aperture value by translating the program line (default program line) obtained by the normal program exposure process along the exposure value Ev line. For example, in the program diagram of the taking lens with the open F value of 3.5 and the minimum aperture F value of 22 shown in FIG. 55C, if the default program line is program-shifted by 0.5 Tv or 1.0 Tv in the positive direction, the program line or And vice versa.
When the program is shifted by 5 Tv or 1.0 Tv, it becomes the program line or. However, if the shutter speed or aperture value exceeds the controllable range, for example, Ev
= 9, in the case of the learning program line, since the aperture value has reached the open value, the program cannot be shifted in the positive direction from here, so learning is not performed. When the shutter speed Tv is added by a predetermined value, the aperture value Av is subtracted by a predetermined value.

The point on the default program line is the origin, and moving this origin to the learning program line along the exposure value Ev line is called origin movement, origin shift.
The movement amount of the shutter speed Tv that changes due to the movement of the origin is called an origin movement amount or a shift amount, the direction of the learning program line from the default program line is the origin direction, and the point on the learning program line is the learning origin. Note that FIG. 55C
A simple program diagram is shown in FIG. 1 to facilitate understanding of the program shift operation of the present invention. However, the present invention is not limited to this, and in the present embodiment, a portrait mode, a landscape mode, a moving object mode and Program shift and learning can be performed in the proximity mode.

In this single-lens reflex camera, the program (P) shift amount and the program (P) shift direction are set by operating the up / down lever 28 (up / down switches 78, 80) (see FIG. 27), and the photometric switch is set. When 70 is turned on, the shutter speed Tv obtained by the normal program calculation processing is changed by the program shift amount, and the proper aperture value Av is calculated again based on the changed shutter speed Tv and the proper exposure value Ev. It is a composition. In this embodiment, an independent learning function is provided for each of the four program exposure modes of the portrait mode, landscape mode, moving object mode and proximity mode, and when any one of the four exposure modes is selected, The learning function works independently.

58 and 59, various data necessary for the learning function, areas of the EEPROM 106 and RAM for storing these data, data formats and their relations, and RA.
The format of M is shown. The data required for learning are the origin shift amount, the origin direction, the number of learning releases,
There are a learning previous direction, a program shift amount, and a program shift direction.

The program shift amount is an absolute value of the shutter speed Tv shifted from the reference program line, and the high speed shutter side (including 0) is positive (+) and the low speed shutter side is negative (-). Positive or negative is identified by the P shift direction bit (positive is “0”, negative is “1”). The reference program line is based on the learning program line when the learning result is saved, and is based on the default program line when not saved. The origin shift amount is the difference between the shutter speed Tv on the learning program line saved by learning and the shutter speed Tv on the default program line, and the magnitude is represented by an absolute value, and the learning program line is based on the default program line. Is positive on the side closer to the high-speed shutter than the default program line, and negative on the side closer to the low-speed shutter. The positive / negative is identified by the origin direction bit (positive: “0”, negative: “1”). The learning release number is counted up every time the exposure is completed, with one condition that the current program shift direction and the previous program shift direction are the same, and the previous program shift direction is learned. Positive: “10”, negative: “01”).

As an area for storing four kinds of data of the above-mentioned origin shift amount, origin direction bit, learning release number, and learning previous direction bit, 2 bytes {S} are stored in the EEPROM 106 for each of the four program exposure modes.
TDYCNT (X), GENPSFT (X)} and RA
2 bytes corresponding to M {STDYCNT (X), GEN
PSFT (X)} is prepared, and 4 bytes (ALLPSFT, SETPSF) are stored in the RAM as a common data area.
T, STDYCNT and GENPSFT) are prepared. The program shift amount is 0 to 6 bits of SETFSFT, the program shift direction is the 7th bit of SETFSFT, and the origin shift amount is 0 to 6 of GENPSFT.
Bit, origin direction bit uses the 7th bit of GENPSFT, and the learning release number is 0 to STDYCNT.
Learning 5 bits, previous direction bit is 6 of STDYCNT
And the 7th bit is used. Furthermore, the total program shift amount (program shift amount from the origin) is ALLP.
0 to 6 bits of SFT, all shift direction bits are ALL
The 7th bit of PSFT is used.

"Learning display mode" E in FIGS.
The display mode of the external display LCD panel 34 regarding the program shift situation and the learning situation when V = 13 is shown. This display is controlled by the P shift graph display process of FIG. 29 based on the P shift display table of FIG. 85, 86 and 90 show the origin mark 58h.
An upper black circle 58f indicates a state where learning is not performed or a state where the learning program line matches the default program line. Further, FIG. 85 shows a state where the program shift amount is 0, and only the black circle 58f on the origin mark 58h is lit. FIG. 86 shows a state where the program shift amount is +1.0 Tv (-1.0 Av), and the blinking black circle 58f displays the shift value, and the black circle 58f on the opposite side of the blinking black circle 58f. Is displaying the origin. In FIG. 90, the program shift amount is -1.
In the state of 0 Tv (+1.0 Av), the blinking black circle 58f at the left end displays the shift value, and the black circle 58f at the right end displays the learning origin. 87 to 89 display that the learning origin is +0.5 Tv (-0.5 Av), that is, the learning program line (data) shifted by +0.5 Tv (-0.5 Av) is stored in memory. ing. 87 shows the state where the program shift is +0.5 Tv, FIG. 88 shows the state where the shift amount is 0, and FIG. 89 shows the state where the program shift is −1.5 Tv. Although not shown, the external display LCD panel 3 is also included in the in-viewfinder display LCD panel 62.
4 corresponding to the triangular mark 58h, the scale 58g and the black circle 58f, the triangular mark 58h, the scale 58g and the black circle 58.
f is displayed in a corresponding manner.

[Learning Calculation Processing] FIG. 5 shows the learning processing.
This will be described in more detail with reference to the flowcharts shown in FIGS. 55A and 55B are flowcharts relating to the learning calculation processing, which is a subroutine called in step S1415 of the release processing of FIG. In the present embodiment, the learning is saved, that is, the learning program line is changed when the learning release is performed a predetermined number of times by the program shift in the same direction.

When the learning calculation process is started, first, the learning RUN flag for controlling the lighting of the learning picture 56S is cleared to determine whether the learning mode is set (the learning mode flag is "1").
Whether the program shift amount is 0 is checked. If the learning mode is not the learning mode (the learning mode flag is “0”) or the program shift amount is 0 even in the learning mode, the learning release number is not counted. Return to the release processing subroutine (S5501 to S5501
5505).

When the learning mode flag is set and the program shift amount is not 0, it is determined whether the program shift amount is larger than the learning change level set by the learning change level changing process of FIG. 26 in order to count the number of learning releases. If it is larger than the learning change level, the number of learning release times 1 is set to the change release number,
If it is less than or equal to the learning change level, the number of learning change times 2 is set as the number of change release times (S5503, S5505).
And S5507, S5509 or S5507, S55
11).

Next, the RAM areas STDYCNT (X) and GENPSFT corresponding to the selected program exposure mode (AE mode number X minus 1).
The origin shift amount, the origin direction bit, the learning release number, and the learning previous direction bit are read from (X), and the origin shift amount and the origin direction bit are set in the RAM area GENPSFT.
In addition, the learning release count and learning previous direction bit are RAM
The memory is stored in the area STDYCNT (S5513 to S55).
21). Then, the learning RUN flag is set, the learning release number is added once, and it is checked whether the learning release number is less than the change release number. If less, the process proceeds to S5529 to count the learning release number,
If it is above, FIG. 57A for learning up / down processing,
Proceed to the learning U / D process of 57B (S5523 to S552).
7).

If the number of learning releases is less than the number of changes release, the program shift direction has not changed from the previous program shift direction (learning direction) (P shift direction bit is "1" and learning previous direction bit is "0").
1 "or the P shift direction bit is" 0 "and the learning previous direction bit is" 10 "), the process directly proceeds to the learning store 2 process (S5529, S5531 or S5529, S5553). When the program is released in the program shift direction (or the shift amount is 0), the learning release count is incremented each time the release is performed, and when the program shift direction changes, the learning release count is set to 1 and the same. The number of learning releases is incremented each time the release is performed in the program shift direction (or the P shift amount is 0).

Previous learning direction (program shift direction)
Is negative and the program shift direction is positive this time, the program shift direction has changed from negative to positive, so the process proceeds to the learning reset 1 process to newly start learning, and the learning release number is set to 1 and the learning previous direction is changed. "10" for the bit
(Positive) is set to proceed to the learning store 2 process for updating only the learning release count and the learning previous direction bit (S55).
29, S5531, S5541). On the contrary, when the previous learning (program shift) direction is positive and the current program shift direction is negative, the program shift direction has changed from positive to negative, so the process proceeds to the learning reset 2 process to start new learning. , The learning release count is set to 1, the learning previous direction bit is set to “01” (negative), and the process proceeds to the learning store 2 process (S5529, S5533, S555).
1).

[Learning Store 2 Process] The learning store 2 process is a process for updating and storing the number of learning releases and the previous learning direction bit, and the origin shift amount and the origin direction bit are not changed. That is, the learning release number and the learning previous direction bit are stored in predetermined bits of the RAM memory area (X) corresponding to the current program exposure mode (AE mode number X) (S5611, S56).
13). And RAM memory area (X) for learning
The contents of is written in the corresponding 2-byte memory area of the EEPROM 106, and then the process returns (S5615).

[Learning Up / Down Processing] Regarding the learning U / D processing for storing the learning result, that is, executing the origin shift when the number of learning releases exceeds the number of changes release, the flowcharts and 55 shown in FIGS. 57A and 57B.
This will be described with reference to the program diagram shown in C. Upon entering this learning U / D processing, first, the program shift direction is checked, and if the current program shift direction is positive (P shift direction bit is "0"), the learning up processing is performed.
If the current program shift direction is negative (the P shift direction bit is "1"), the learning down process is executed. When the program shift amount of the default program line or the learning program line is set to 0, the external display LCD panel 3
In FIG. 4, a black circle 58f above the origin display mark (triangle mark) 58h lights up. The displays in FIGS. 85 to 90 are displayed when Ev (Lv) = 13.

[Learning Up Processing] In the learning up processing,
First, the previous learning direction (program shift direction) is checked, and when the previous learning direction is negative (learning previous direction bit is negative “10”), that is, when the current program shift direction is different from the previous time, the origin shift amount and the Since the origin direction bit is not updated, the process proceeds to the learning reset 1 process (S5711). For example, in FIG. 55C, assuming that the current learning program line is, the previous program shift is −0.5, −1.0 Tv or less (or direction), and the current program shift is +0.5, +.
This is the case of 1.0 Tv or higher (or direction). For example, the previous time is the shift state shown in FIG. 90, and this time is the shift state shown in FIG. 86.

If the program shift direction is the same as the last time, or if the program shift was not performed the last time (shift amount is 0), 0 is entered in the number of learning releases,
Learning "01" is put in the previous direction bit and S5715-S
The process proceeds to the origin shift amount setting and program shift amount setting steps of 5727 (S5711, S5713). For example, if the current learning program line is, the previous program shift is 0, +0.5, +1.5 Tv or more (or direction), and the current program shift is +0.5 Tv or more (direction). This is the case. The default (learning) program line is displayed as shown in FIG. 86 when the program shift is +1.0 Tv.

Then, the origin shift amount is set according to the origin direction, that is, whether the learning program line is in the positive direction (including the case where they match) or in the negative direction with respect to the default program line. Addition / subtraction for 0.5 Tv (S5715, S5717, S5719 or S571
5, S5721).

When the learning program line is shifted in the positive direction relative to the default program line (that is, the origin direction bit is positive "0") and the shift amount is less than 2, the origin shift amount is added by 0.5 Tv. Yes (S5715
~ S5719). Then, 0.
5Tv is subtracted from the program shift amount, and the process proceeds to the learning store 1 process (S5727). Since the maximum value of the origin shift amount is limited to 2 Tv in this embodiment, when the origin shift amount is 2 Tv or more, the origin shift (shift of the learning program line) is not executed and S5717 is performed.
To Learning Store 1. By the above-described up processing, for example, when the default program line is the learning program line and the program shift is +0.5 Tv (direction), the learning program line changes from to. When the default (learning) program line is added by +0.5 Tv from the state of FIG. 86 when the program shift is +1.0 Tv, the lighting of the black circle 58f changes as shown in FIG. 87, and the program line becomes +0. It shows that the program shift is +0.5 Tv instead of the learning program line shifted by 5 Tv. When the program shift clear process is performed, the program shift amount from the learning program line is cleared and displayed as shown in FIG. 88.

When the learning program line is shifted in the negative direction from the default program line, that is, when the origin direction bit is "1", the origin shift amount is 0.5 Tv.
The minute is subtracted (S5715, S5721). If the origin shift amount becomes 0, enter "0" in the origin direction bit,
If the origin shift amount does not become 0, the program shift amount is subtracted by 0.5 Tv and the process proceeds to the learning store 1 process (S5723, S5725, S5727 or S57).
23, S5727). By the above-described up processing, for example, the default program line is the current learning program line, and the program shift is +0.5, +1.0,
In the case of +1.5 Tv or higher (,, direction), the new learning program line changes to.

[Learning Down Processing] The learning down processing includes
It is entered when the program shift direction is negative (the P shift direction bit is "1") in step S5701.
In the learning down process, first, whether or not the program shift direction has changed from the previous time is checked by the previous learning direction bit, and if the program shift direction has changed from the previous time (the previous learning direction bit is “01”), the learning reset process 2 And the learning content is not updated (S573).
1). If the program shift direction has not changed from the previous time (the previous learning direction bit is "10"), the learning release number is set to 0 and a negative "01" is put in the learning previous direction bit (S5733).

Then, depending on the origin direction, that is, the learning program line is in the negative direction relative to the default program line,
Alternatively, the origin shift amount is added or subtracted depending on whether it is the same or in the positive direction (S5735, S5737 or S573).
5, S5743, S5745).

When the origin direction is positive, the origin shift amount is subtracted by 0.5 Tv (S5735, S5737). Here, since the origin shift amount after subtraction may be less than 0 (-0.5 Tv), it is checked whether or not the origin shift amount is less than 0, and when it is less than 0, absolute value processing of the origin shift amount is performed. Change the origin direction bit to “1” (negative) and proceed to S5747, where the origin shift amount after subtraction is 0.
In the above case, the process directly proceeds to S5747 (S573).
9, S5741). By the above down processing, for example,
The default program line is the learning program line, and the program shift is -0.5, -1.0, -1.5.
At Tv or lower (,, direction), a new learning program line becomes. FIG. 89 shows the display when the learning program line is and the program shift is −1.5 Tv, and FIG. 90 shows the display mode when the learning program line becomes to be learned in this state.

When the origin direction is negative, the origin shift amount may exceed the limit value (2Tv). Therefore, it is checked whether the origin shift amount is equal to or more than the limit value. If it is less than the limit value (2Tv), the origin shift amount is 0.5Tv. Add, subtract 0.5 Tv from the program shift amount, and proceed to S5749. If it is greater than or equal to the limit value, jump to S5749 (S5735, S5743 to S5743
5747, S5749 or S5735, S5743,
S5749). By the above down processing, for example, when the default program line is the learning program line and the program shift is −0.5 Tv or less (direction), a new learning program line becomes.

Since the program shift amount subtracted in S5747 may become 0, when it becomes 0, the P shift direction bit is changed to "0" (positive) and the program proceeds to the learning store 1 to change the program shift amount. When is not 0, the process proceeds to the learning store 1 as it is (S5749, S
5751).

[Learning Stores 1 and 2] Next, the learning status is E
The learning store 1 processing stored in the EPROM 106 will be described with reference to FIG. First, the origin shift amount and origin direction bit set by the learning up / down processing are respectively set to R corresponding to the current program exposure mode.
AM memory areas STDYCNT (X), GENPSF
After storing in a predetermined bit of T (X), the process proceeds to the learning store 2 process (S5601, S5603).

In the learning store 2 processing, the learning release number and the learning previous direction bit are further stored in predetermined bits of the RAM area (X) corresponding to the current program exposure mode (S5611, S5613). Then, the RAM memory areas STDYCNT (X), G for learning
The contents of ENPSFT (X) are stored in the corresponding 2-byte memory area STDYCNT (X), G of the EEPROM 106.
Write to ENPSFT (X) and then return (S
5615).

As described above, according to the single-lens reflex camera equipped with the learning function of the present invention, the photographer selects the person exposure mode, landscape mode, moving object mode or proximity mode as the program exposure mode and selects the learning mode. When the program is released in the positive or negative direction and released a predetermined number of times, the program line is shifted (moved to the origin) in 0.5Tv steps in the shifted direction, and after the shift, the shutter is set with this shifted learning program line as a reference. Set speed and aperture value, and perform program shift and learning. That is, the single-lens reflex camera of the present embodiment, when the photographer shifts the program and releases, learns the shift tendency for each release, and when learning a predetermined number of times,
The learning result is updated (saved), the shutter speed and the aperture value are set based on the learning result, and the learning is newly executed.

In the above description of the present embodiment, the combination of the program shift amount and the learning change number is selected. However, the combination is not limited to this, and the shift amount and the learning change number may be selected separately. Often, the number of learnings is changed in two steps with a predetermined shift amount as a boundary,
A configuration in which the number of times of learning is changed in three stages or more or according to the shift amount is also possible.

Further, although learning is changed in 0.5 Tv step units in this embodiment, the present invention is not limited to this value. For example, it may be 1.0 Tv step or 0.3 Tv step, or may be configured to skip to a specific Tv value. Further, in the present embodiment, the shutter speed Tv is prioritized to execute the program process, the program shift process, and the learning / storing process, but the aperture value Av may be prioritized to execute the above processes.

[0228]

As described above, according to the present invention, it is possible to obtain a camera applicable not only to the macro range of the zoom lens but also to the macro lens as a close-up mode. Further, in close-up photography, the depth of field becomes shallow and the shutter speed slows down due to over-narrowing, and camera shake and subject shake easily occur. The aperture is narrowed down by approximately one step and the aperture value is controlled after the camera shake limit. Therefore, it is possible to avoid camera shake and subject shake.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of an embodiment of a camera body of a single-lens reflex camera to which the camera according to the present invention is applied.

FIG. 2 is a plan view showing a top surface shape of the camera body shown in FIG.

FIG. 3 is a rear view showing the rear shape of the camera body shown in FIG.

4 is a diagram showing an external display LCD panel provided in the camera body shown in FIG. 1 in a fully lit state.

FIG. 5 is a diagram showing a fixed display content extracted from the external display LCD panel shown in FIG.

6 is a vertical cross-sectional view showing the structure of the external display LCD panel shown in FIG.

FIG. 7 is a diagram showing a viewfinder display LCD panel provided in an eyepiece viewfinder section of the camera body shown in FIG. 1 in a fully lit state.

8 is a vertical cross-sectional view showing a mounting mode of a shutter button, an up / down lever, and a Tv / Av button arranged on the camera body shown in FIG. 1, as viewed from a side surface.

9 is a vertical cross-sectional view showing a mounting mode of the up / down lever shown in FIG. 8 as viewed from the front.

10 is a vertical cross-sectional view showing a mounting mode of drive buttons and mode buttons arranged on the camera body shown in FIG. 1, as viewed from the front.

FIG. 11 is a block diagram showing a schematic configuration of a control system in the single-lens reflex camera of the embodiment.

12 is a flowchart showing a main routine of a control procedure executed by the body side CPU shown in FIG.

FIG. 13A,

FIG. 13B is a flowchart showing a control procedure when restart is called.

FIG. 14 is a flowchart showing a control procedure when a release process is called.

FIG. 15 is a flowchart showing a control procedure when a SW operation display loop is called.

16A] FIG.

FIG. 16B]

FIG. 16C is a flowchart showing a control procedure when the SW operation display 1 is called.

FIG. 17 is a flowchart showing a control procedure when a PF loop is called.

FIG. 18 is a flowchart showing a control procedure when a PF display process is called.

FIG. 19A]

FIG. 19B is a flowchart showing a control procedure when the PF loop 1 is called.

FIG. 20 is a flowchart showing a control procedure when PF all clear is called.

FIG. 21 is a flowchart showing a control procedure when a PF cancel process is called.

FIG. 22 is a flowchart showing a control procedure when a U / D loop is called.

FIG. 23 is a flowchart showing a control procedure when the UP loop is called.

FIG. 24 is a flowchart showing a control procedure when a DOWN loop is called.

FIG. 25 is a flowchart showing a control procedure when data U / D is called.

FIG. 26 is a flowchart showing a control procedure when PF data U / D is called.

FIG. 27 is a flowchart showing a control procedure when P shift U / D is called.

FIG. 28 is a flowchart showing a control procedure when the exposure correction U / D is called.

FIG. 29 is a flowchart showing a control procedure when P shift graph display is called.

FIG. 30 is a flowchart showing a control procedure when exposure compensation display is called.

FIG. 31 is a diagram showing a P shift display table.

FIG. 32 is a flowchart showing a control procedure when a PF timer display is called.

FIG. 33 is a diagram showing a data format in a PICT mode and a FULL mode.

FIG. 34 is a flowchart showing a control procedure when an AE mode U / D is called.

FIG. 35 is a flowchart showing a control procedure when an AE mode setting is called.

FIG. 36 is a diagram showing a relationship between an AE mode and an exposure mode.

FIG. 37 is a diagram showing changes in the graph display state accompanying the counting operation of the PF timer.

FIG. 38 is a flowchart showing a control procedure when a P shift clear process is called.

FIG. 39 is a flowchart showing a control procedure when the exposure correction clear processing is called.

FIG. 40 is a diagram showing an exposure correction graph display table.

FIG. 41A],

FIG. 41B],

FIG. 41C],

FIG. 41D is a flowchart showing a control procedure when an AE calculation is called.

42A] FIG.

FIG. 42B is a flowchart showing a control procedure when a program operation is called.

FIG. 43: CAL It is a flow chart which shows a control procedure when Tv is called.

FIG. 44 CAL It is a flow chart which shows a control procedure when Av is called.

FIG. 45 is a flowchart showing a control procedure when a sub P shift is called.

FIG. 46 is a flowchart showing a control procedure when a P shift calculation is called.

FIG. 47: CHK It is a flow chart which shows a control procedure when TvAv is called.

FIG. 48A is a program diagram generally showing the relationship between the shutter speed and the aperture when the portrait mode is selected.

FIG. 48B is a program diagram specifically showing the relationship between the shutter speed and the aperture when the focal length is 28 mm and 80 mm when the portrait mode is selected.

FIG. 49A is a program diagram generally showing the relationship between the shutter speed and the aperture when the landscape mode is selected.

FIG. 49B is a program diagram specifically showing the relationship between the shutter speed and the aperture when the focal length is 28 mm and 80 mm when the landscape mode is selected.

FIG. 50A is a program diagram generally showing the relationship between the shutter speed and the aperture when the moving object mode is selected.

FIG. 50B is a program diagram specifically showing the relationship between the shutter speed and the aperture when the focal length is 28 mm and 80 mm when the moving object mode is selected.

FIG. 51A is a program diagram generally showing the relationship between the shutter speed and the aperture when the proximity mode is selected.

FIG. 51B is a program diagram specifically showing the relationship between the shutter speed and the aperture when the focal length is 28 mm and 80 mm when the proximity mode is selected.

FIG. 52A is a flowchart showing a control procedure when a normal program is called.

52B is a program diagram specifically showing the relationship between the shutter speed and the aperture when the focal length is 28 mm and 80 mm when the normal program is selected. FIG.

FIG. 53 is a flowchart showing a control procedure when an AUTO calculation is called.

FIG. 54 is a flowchart showing a control procedure when a manual calculation is called.

55A],

FIG. 55B

FIG. 55C is a program diagram illustrating program shift. It is a flow chart which shows a control procedure when a learning operation is called.

FIG. 56 is a flowchart showing a control procedure when the learning store 1 is called.

FIG. 57A],

FIG. 57B is a flowchart showing a control procedure when the learning U / D is called.

FIG. 58 is a diagram showing a data format of EEPROM-RAM.

FIG. 59 is a diagram showing a format of each RAM.

FIG. 60A is a diagram showing a state where a main button is brought to a PICT position.

FIG. 60B is a diagram showing a display state of the in-finder display LCD panel when the main button is brought to the PICT position.

FIG. 60C is a diagram showing a display state of the external display LCD panel when the main button is brought to the PICT position. It is a figure showing the state where the main button was brought to the PICT position.

FIG. 61A is a diagram showing a state where a main button is brought to an ON position.

FIG. 61B is a diagram showing a display state of the in-finder display LCD panel when the main button is brought to the ON position.

FIG. 61C is a diagram showing a display state of the external display LCD panel when the main button is in the ON position.

FIG. 62 is a diagram showing a display state of the external display LCD panel when the learning calculation is selected, for example, when the person mode is set.

FIG. 63A:

FIG. 63B:

[FIG. 63C] FIG.

[FIG. 63D] FIG.

FIG. 63E]

FIG. 63F],

FIG. 63G is a diagram showing changes in the display state of the external display LCD panel when setting the special function (PF) setting mode.

64A]

FIG. 64B is a diagram showing changes in the display state of the external display LCD panel when clearing the special function (PF) setting mode.

FIG. 65A:

FIG. 65B is an IS in the special function (PF) setting mode
It is a figure which shows the change of the display state of an external display LCD panel when setting O sensitivity.

FIG. 66A]

FIG. 66B is a diagram showing changes in the display state of the external display LCD panel when setting the number of times of learning or the like in the special function (PF) setting mode.

67A],

FIG. 67B is a diagram showing changes in the display state of the external display LCD panel when setting the presence / absence of a focusing sound in the special function (PF) setting mode.

68A],

FIG. 68B]

FIG. 68C]

68D],

FIG. 68E]

FIG. 68F is a sound of the external display LCD panel when setting the focus sound in the special function (PF) setting mode.
It is a figure which shows the change of a display state.

FIG. 69A:

FIG. 69B is a diagram showing a change in display state of the external display LCD panel when setting the presence / absence of a learning operation in the special function (PF) setting mode.

[FIG. 70A]

FIG. 70B is a diagram showing changes in the display state of the external display LCD panel when setting whether or not to clear the learning operation in the special function (PF) setting mode.

71A is a diagram showing the display state of the external display LCD panel when the green mode is set in the picture mode. FIG.

FIG. 71B is a diagram showing a display state of the external display LCD panel when the person mode is set in the picture mode.

FIG. 71C is a diagram showing a display state of the external display LCD panel when the landscape mode is set in the picture mode.

FIG. 71D is a diagram showing a display state of the external display LCD panel when the moving object mode is set in the picture mode.

FIG. 71E is a diagram showing a display state of the external display LCD panel when the proximity mode is set in the picture mode.

71F is a view L in the viewfinder when the person, landscape, or proximity mode is set in the picture mode. FIG.
It is a figure which shows the display state of a CD panel.

FIG. 71G is a diagram showing a display state of the in-viewfinder display LCD panel when the moving object mode is set in the picture mode.

72A],

72B is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel in a state where, for example, the person mode is selected in the picture mode. FIG.

73A],

73B is a diagram showing the respective display states of the in-finder display LCD panel and the external display LCD panel when the exposure is corrected from the states shown in FIGS. 72A and 72B.

74A],

FIG. 74B is a viewfinder display LCD panel and external display LC when exposure correction is performed beyond the display range on the bar graph from the state shown in FIGS. 72A and 72B.
It is a figure which shows each display state of D panel.

FIG. 75A:

FIG. 75B is a viewfinder display LCD panel and external display LCD in the case where the exposure is corrected and then the normal shooting state is restored from the states shown in FIGS. 72A and 72B.
It is a figure which shows each display state of a panel.

FIG. 76A:

FIG. 76B is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel in the state where the program mode is selected.

77A],

77B is a diagram showing the respective display states of the in-finder display LCD panel and the external display LCD panel when the exposure is corrected from the states shown in FIGS. 76A and 76B. FIG.

FIG. 78A:

FIG. 78B is a viewfinder display LCD panel and an external display LCD in the case where the state shown in FIGS. 76A and 76B is returned to the normal shooting state after exposure compensation.
It is a figure which shows each display state of a panel.

FIG. 79A]

FIG. 79B is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel in a state where the auto mode is selected.

FIG. 80A:

FIG. 80B is a diagram showing the respective display states of the in-finder display LCD panel and the external display LCD panel when the exposure is corrected from the states shown in FIGS. 79A and 79B.

81A],

FIG. 81B is a viewfinder display LCD panel and external display LCD in the case where the exposure state is corrected and the normal shooting state is restored again from the states shown in FIGS. 79A and 79B.
It is a figure which shows each display state of a panel.

FIG. 82A:

FIG. 82B is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel when the shutter speed variable state is set in the state where the manual mode is selected.

FIG. 83A:

FIG. 83B is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel when the diaphragm variable state is set in the state where the manual mode is selected.

FIG. 83C:

FIG. 83D is a case where the aperture variable state is set in the state where the manual mode is selected, and the difference between the proper exposure value calculated and the manually set exposure value exceeds the display range of the bar graph. FIG. 6 is a diagram showing a normal display state of each of the in-finder display LCD panel and the external display LCD panel in FIG.

FIG. 84A:

FIG. 84B is a viewfinder display LCD panel and external display in the case where the aperture variable state is set in the state where the manual mode is selected and the proper exposure value calculated and the manually set exposure value match. It is a figure which shows each normal display state of an LCD panel.

FIG. 85 is a diagram showing a display manner of the external display LCD panel before saving the learning data or when the learning program line matches the default program line and the program shift is 0.

FIG. 86 is a diagram showing a display manner of the external display LCD panel before saving the learning data or when the learning program line matches the default program line and the program shift is +1.0 Tv.

FIG. 87 is a diagram showing a display mode of the external display LCD panel when the learning program line is shifted by +0.5 Tv from the default program line and the program shift is +0.5 Tv.

88 is a diagram showing a display manner of the external display LCD panel when the learning program line is shifted by +0.5 Tv from the default program line and the program shift is 0. FIG.

FIG. 89 is a diagram showing a display mode of the external display LCD panel when the learning program line is shifted by +0.5 Tv from the default program line and the program shift is −1.5 Tv.

FIG. 90 is a diagram showing a display manner of the external display LCD panel before saving the learning data or when the learning program line matches the default program line and the program shift is −1.5 Tv.

[Explanation of symbols]

 10 Camera Body 12 Photographic Lens (Power Zoom Lens) 14 Lens Mount Section 16 Lens Lock Button 18 Connection Terminal Group 20 Body Side CPU 22 Lens Side CPU 24 Focus Mode Switch Button 26 Shutter Button 28 Up / Down Lever 30 Tv / Av Button 32 Pop-up button 34 External display LCD panel 36 Main button 38 Drive button 40 Mode button 42 Accessory shoe 44 Cover member 46 Finder eyepiece section 48 Back cover 50 Date data imprinting mechanism 52 Hyper button 54a to 54d Fixed display section 56a to 56t picture 58a -58n Frames, marks, etc. 60a-60k Numbers, letters, etc. 62 Finder display LCD panel 64 Decorative plate 66 Coil spring 68 Switch assembly 70 Photometric switch 2 Release switch 74 Leaf spring 76 Clear switch 78 Up switch 80 Down switch 82 Drive switch 84 Mode switch 86 Switch parent board 88 Hyper switch 90 Patrone detection switch 92 Main mirror 94 Light receiving element 96 Photometric circuit 98 A / D conversion circuit 100 Exposure control Device 102 Focal length detection mechanism 104 Controller 106 EEPROM 108 Electronic buzzer 110 Main switch 110a On switch 110b PICT switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuyuki Haneishi 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Kogaku Gakuin Co., Ltd.

Claims (1)

[Claims] 1. A camera having a plurality of program lines in which a combination of a shutter speed and an aperture is preset corresponding to each of a plurality of exposure modes including a proximity mode, wherein the program line related to the proximity mode is a low aperture. From the shutter speed range to the camera shake limit, it is fixed to the first value, and at the camera shake limit, it is narrowed down by one step from the first value and fixed to the second value, and with this second value, control after the camera shake limit is performed. An exposure mode control device for a camera, wherein the exposure mode control device is set to perform.