JPH06230448A - Device for setting sensitivity of film for camera - Google Patents

Abstract

PURPOSE:To optionally execute sensitization and desensitization photographing even in the case of film having DX information and to eliminate the need of repetitive setting of the same sensitivity information for the film having no DX information. CONSTITUTION:A microcomputer 80 uses two storage parts such as a register (1st storage part) in the microcomputer 80 and a specified area (2nd storage part) on an EEPROM 88 as a storage part for storing the sensitivity of the film. When the film having the DX information is loaded, the sensitivity of the film having the DX information read by a DX code read circuit 83 is written in the 1st storage part, and is changed by the operation of an up-button or a down-button, etc. When the film having no DX information is loaded, the present sensitivity in the 2nd storage part is written in the 1st storage part, and is changed by the operation of the up-button or the down-button, etc., and when the sensitivity is changed, the changed sensitivity is written in the 1st storage part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film sensitivity setting device for a camera capable of automatically and manually setting film sensitivity.

[0002]

[Overview] Film speed information (D
The film sensitivity setting means is provided with an automatic sensitivity setting means for inputting (X information) and a manual setting means for inputting film sensitivity information set by a manual operation. When a film having DX information is loaded, which has a (first storage unit) and an EEPROM (second storage unit), the DX information is input to the first storage unit as film sensitivity information, and in this state, manual operation is performed. The film sensitivity information in the first storage section can be changed by operation. Also, if there is no film, or DX
When a film without information is loaded, the information stored in advance in the second storage unit is substituted into the first storage unit. In this state, the film sensitivity information of the second storage section can be changed by a manual operation, and the changed information of the second storage section is introduced into the information of the first storage section.

[0003]

2. Description of the Related Art Conventionally, as a film sensitivity setting device capable of automatically and manually setting this type of film sensitivity, there are JP-A-60-138517 (hereinafter referred to as "A-publication") and JP-A-60-28637. Publication (hereinafter referred to as B publication)
Has been filed.

In the method of the publication A, in order to make it unnecessary to switch the film sensitivity between automatic setting and manual setting, an automatic film sensitivity setting means for inputting DX information (film sensitivity code) laid on the cartridge and a manual It is equipped with a manual film sensitivity setting means for inputting the film sensitivity information set in, and either the information input from the automatic film sensitivity setting means or the information input from the manual film sensitivity setting means is input as the exposure condition. This is a film sensitivity setting device, and if the automatic film sensitivity setting inputs DX information, this DX information is input as valid information, and if the automatic film sensitivity setting means determines that there is no DX information, the manual film sensitivity setting device The information input from the setting means is input.

Further, in the method of the B publication, the photographer can arbitrarily change the film sensitivity set automatically so that the sensitized shooting and the desensitized shooting can be performed, and the DX information laid on the patrone is input. It is equipped with a film sensitivity automatic setting means and a manual film sensitivity setting means for inputting manually set film sensitivity information, and when the manual film sensitivity setting means is operated to set a predetermined film sensitivity, the film sensitivity automatic setting is performed. The information from the means is canceled and the film speed information set by the manual film speed setting means is received.

[0006]

Therefore, in the method of the publication A, when the automatic film sensitivity setting inputs the DX information, this DX information is input as effective information, and the automatic film sensitivity setting means outputs the DX information. When the film having the DX information is loaded in the camera, the DX information is input by the automatic film sensitivity setting device when the film having the DX information is loaded. Since the sensitivity is set, for example, sensitized shooting and desensitized shooting cannot be performed with a film having DX information. In addition, when attempting to perform these photographing operations, the DX information contact portion of the film is covered with tape or the like in advance to block the input of film sensitivity information, and thereafter, manual film sensitivity setting means is required to perform setting, which is troublesome. .

In the method of B publication, when the manual film sensitivity setting means is operated to set a predetermined film sensitivity, the information from the film sensitivity automatic setting means is canceled and the film set by the manual film sensitivity setting means is canceled. Since it is configured to receive the sensitivity information, for example, although a film having DX information is loaded,
There are times when you take a picture with the film sensitivity information set manually by manual operation.
If the information is different from the film information set by the manual operation, an under or over photograph is obtained.

The present invention has been made to solve this problem, and its purpose is to give priority to this information when a film having DX information is loaded, and in this state by a manual input means. The film sensitivity can be changed so that the photographer can arbitrarily perform sensitized shooting and desensitized shooting. When a film without DX information is loaded, the film sensitivity information stored in advance is input, and in this state, the film sensitivity information can be changed based on the manual operation, and the DX information of the same sensitivity can be changed again. It is not necessary to repeat the setting when no film is loaded.

[0009]

In order to achieve the above object, a film sensitivity setting device for a camera of the present invention comprises an automatic sensitivity setting means for inputting film sensitivity information laid on a cartridge and a film set by manual operation. In a film sensitivity setting device for a camera provided with a manual sensitivity setting means for inputting sensitivity information, a film sensitivity information input by the automatic sensitivity setting means or the manual sensitivity setting means is retained as information during exposure control. 1 storage unit and a second storage unit for storing predetermined film sensitivity information in advance
The storage unit and the film having the film sensitivity information are loaded, and the automatic sensitivity setting means is operated based on the closing of the back cover or the completion of the autoloading operation to input the film sensitivity information, and the first storage unit is operated. A first memory control means for storing the film speed information in the first memory part by the manual setting means from a state in which the film sensitivity information is stored in the first memory part by the first memory control means; Second storage control means for storing the changed film sensitivity information in the first storage portion, and film sensitivity information stored in the first storage portion in the state where a film having no film sensitivity information is loaded, is stored in the second storage portion. Third storage control means for changing to the film sensitivity information stored in the section, and the film sensitivity information stored in the first storage section and the second storage section under the control of the third storage control section. A fourth storage control means for permitting a change of the film sensitivity information of the second storage portion by the operation of the manual setting means and storing the changed film sensitivity information in the first storage portion in the stored state. ing.

[0010]

[Function] Film speed information (D
The film sensitivity setting means includes an automatic sensitivity setting means for inputting X information) and a manual setting means for inputting film sensitivity information set by a manual operation. When a film having DX information is loaded in the first storage section and the second storage section in the EEPROM, the DX information is input to the first storage section as film sensitivity information, and in this state, the manual operation is performed. The film sensitivity information in the first storage section can be changed by operation. When there is no film or when a film without DX information is loaded, the information stored in advance in the second storage unit is input to the first storage unit. In this state, the film sensitivity information of the second storage section can be changed by a manual operation, and the changed information of the second storage section is introduced into the information of the first storage section.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1. Camera Appearance FIGS. 1, 2, and 3 are external views of an electronic camera according to an embodiment of the present invention as seen from an oblique front surface, a top surface, and a back surface, respectively.

In the front of the camera, as shown in FIG. 1, a taking lens 1, a lens barrel 2 that holds the taking lens 1 so as to be movable in the optical axis direction, and unnecessary light from other than the lens field angle is taken by the taking lens 1. Lens hood 3, photometering window 4, self-timer display unit 5, autofocus window 6,
A finder 7 and a finder lighting window 8 are provided. Further, as shown in FIG. 2, on the top surface of the camera, a main dial 9 for selecting a photographing mode (P mode, M mode, A mode) and prohibition of camera operation (OFF mode), a release button 10, an aperture setting. Dial 11, up button 12, down button 14, self start button 15, manual focus (MF) button 16, select button 17, midway rewind button 18, infrared mode setting button 13, film winding number, shutter speed, aperture value A display (liquid crystal) panel 19 for displaying such as, an accessory shoe 20, an X contact 21, and a contact 22 for receiving a charge completion signal are provided. On the rear surface of the camera, as shown in FIG. 3, the viewfinder eyepiece window 23,
A back cover 24 and a film confirmation window 25 are provided. Although not shown, a back lid opening / closing detection switch 99 that is turned on / off by opening / closing the back lid 24 is provided inside the back lid 24.

A focusing indicator 2 is attached to the lens barrel 2.
a is provided to display distance information corresponding to the focus position of the taking lens 1.

Although not shown, a rewind dress switch 98 is provided at the upper left of the cartridge chamber, and a film sensitivity detection pin 97 for reading the DX code information of the cartridge is provided at the right side.

Looking through the finder 7, the subject can be visually recognized as an erect image. As shown in FIG. 4, a field frame 7a indicating a photographing range, a distance measurement target mark 7f, and a focus position display display mark 7e are shown in the viewfinder.
In addition, a distance measuring mark 7b, an underexposure warning mark 7c, an overexposure warning mark 7d, etc. are appropriately displayed on the finder 7 by LEDs. Inside the finder lighting window 8, there is provided a field frame plate in which the shape of the field frame 7a showing the photographing range is formed, and the light transmitted from this field frame plate and the field frame 7a shown in FIG. The distance target mark 7f and the focus position display mark 7e are visible. 2. Shutter Drive Mechanism FIG. 5 is a front view of the shutter mechanism in a closed state, and shows two shutter blades 40 (40a, 40a,
40b). The two shutter blades 40 are
Support shafts 42 (42a, 4a, 4a attached to the shutter base plate 41
2b) and a pin 44 attached to the opening / closing lever 43. The opening 4 is formed in the shutter base plate 41.
1a is formed. The opening / closing lever 43 is attached to the back surface of the shutter base plate 41 when viewed from the front while being biased by the spring 45 in the clockwise direction (direction of arrow A1) about the shaft 43b, and the pin 44 is formed on the shutter base plate 41. The two shutter blades 40, which are attached to the front surface as viewed from the front, are supported by being projected from the elongated hole 46 formed.

A locking lever 49 pivotally supported by a pin 48 is attached to the shutter drive ring 47 that rotates about the optical axis. ), One end of which is brought into contact with the protruding portion 47 a of the shutter drive ring 47. Further, when the shutter blades 40 are closed, the engaging portion 49a of the engaging lever 49 is engaged with the engaging portion 43a of the opening / closing lever 43. The shutter drive ring 47 is biased by the spring 51 in the direction in which the shutter blade 40 is closed.

The shutter drive motor MS is a stepping motor formed in a horseshoe shape, and has a shutter base plate 4
It is fixed to 1. The drive motor MS has a rotor MSa, a coil MSb, and a core MSc, and the rotation of the rotor MSa is transmitted to the shutter drive ring 47 via the gear 52.

Next, the opening / closing operation of the shutter will be described.

First, when the shutter is opened, as shown in FIG. 5, the rotor MSa of the shutter drive motor MS is rotated counterclockwise (arrow A3) as shown in FIG.
Shutter drive ring 47,
It rotates in the counterclockwise direction (direction of arrow A4). At this time, the locking lever 49 also rotates in the counterclockwise direction (the direction of arrow A5) together with the shutter drive ring 47. By this rotation, the engagement between the engagement portion 49a of the engagement lever 49 and the engagement portion 43a of the opening / closing lever 43 is released, and at the same time, the opening / closing lever 43 is rapidly moved clockwise (in the direction of arrow A1) by the action of the spring 45. Then, the pin 44 abuts on the end of the elongated hole 46 near the lens and stops. When the open / close lever 43 rotates in the lens direction in this manner, the two shutter blades 40 rotate about the support shaft 42, respectively.
As shown in, the shutter is opened.

When the shutter is closed, the rotor MSa of the shutter drive motor MS is rotated in the clockwise direction (direction opposite to the arrow A3) contrary to the opening operation of the shutter. When the rotor MSa is rotated clockwise (direction opposite to the arrow A3), the shutter drive ring 47 rotates clockwise (direction opposite to the arrow A4). At this time, the locking lever 49 moves the shutter drive ring 47 by the pin 48.
Since it is pivotally supported, the shutter drive ring 47 rotates integrally with the shutter drive ring 47 in the clockwise direction (direction opposite to arrow A5). When the inclined portion 49b of the locking lever 49 comes into contact with the engaging portion 43 of the opening / closing lever 43 and the shutter drive ring 47 continues to rotate, the engaging portion 43a moves downward along the inclined portion 49b. The shutter blades 40 move while slidingly contacting each other, whereby the shutter blades 40 perform a closing operation. The engaging portion 43a eventually moves from the inclined portion 49b while slidingly contacting the engaging portion 49a of the engaging lever 49, and becomes in a state of engaging with the engaging portion 49a. At that time, the locking lever 49
Is released from the restriction of the engaging portion 43a, and is rotated clockwise by the action of the spring 50 about the pin 48, one end of which is brought into contact with the protrusion 47a of the shutter drive ring 47 and the rotation is stopped. A force is applied to the opening / closing lever 43 by the spring 45 so that the opening / closing lever 43 is rotated in the clockwise direction.
4 moves upward and opens the shutter blade 40,
In this state, since the engagement portion 43a is engaged with the locking portion 49a, the movement of the pin 44 is restricted and the shutter blades are kept closed.

The photo-reflector 53 has shutter blades 4.
A shutter opening / closing signal (pulse signal) ST to be described later is output when the L-shaped tip portion of 0 passes, but the pulse indicating the shutter closing is the time point in the pinhole state before the shutter blade 40 is completely closed. Is output with. 3. Aperture Driving Mechanism FIG. 7 is a front view of the aperture mechanism, showing the state of the maximum aperture value F2.0, and the aperture 61a of the aperture base plate 61.
To form the maximum opening diameter. The diaphragm mechanism in this embodiment has six diaphragm blades 60. That is, the locking portions 60 a of the six diaphragm blades 60 are the locking pins 61.
Are rotatably supported by and are attached to the circumference of the throttle base plate 62 at equal intervals.

Further, each diaphragm blade 60 has the following diaphragm blade 6
0 is sequentially laminated, and the diaphragm is formed by the diaphragm aperture forming surface 60b of each diaphragm blade 60. A guide pin 63 is provided upright on each diaphragm blade 60. The guide pin 63 is inserted into a cam hole 64a formed in the cam ring 64. The convex portion 64b formed on the outer periphery of the cam ring 64 is formed by the spring 65 and the diaphragm drive ring 6
6 is in contact with an eccentric pin 67 provided on a convex portion 66a on the outer periphery of the shaft 6.

The diaphragm drive motor MI is a stepping motor formed in a horseshoe shape, and includes a rotor MIa and a coil M.
It has Ib and core MIc, and the rotation of the rotor MIa is transmitted to the diaphragm drive ring 66 via the gear 68. In order to reduce the aperture value of F2.0 in FIG. 7 from the fully open state, the aperture drive motor MI is rotated clockwise (direction of arrow A7).
Rotate the diaphragm drive ring 66 in the clockwise direction (arrow A
8 direction). Then, the cam ring 64
Due to the action of the spring 65, it rotates following the diaphragm drive ring 66. When the cam ring 64 rotates, each diaphragm blade 60
Is rotated in the clockwise direction (direction of arrow A9) around the locking pin 61 with the guide pin 63 being guided in the cam hole 64a, and for example, as shown in FIG. Become. 4. Focus Lens Driving Mechanism FIG. 9 is a front view showing the lens driving mechanism. The lens barrel 2 is provided with a movable barrel 2a for supporting the taking lens 1 and a fixed barrel 2b fixed to the camera body. The movable barrel 2a is configured to advance and retreat in the optical axis direction with respect to the fixed barrel 2b. The rotation of the lens drive motor (DC motor) ML is transmitted to the gear portion 31a of the first helicoid ring 31 shown in FIG. 11 via the gear train 30. The second helicoid ring 32 is screwed into the first helicoid ring 31, and the second helicoid ring 32 moves straight along with the taking lens 1 in the optical axis direction by the rotation of the first helicoid ring 31. At this time, the plurality of blades 33 attached to the rotation shaft of the lens drive motor ML for detecting rotation and the first
Photointerrupter PI1, one blade 34 attached to the gear and the second photointerrupter PI2, and lens barrel 2
Control of the position of the photographing lens 1 by using signals LDP1, LDP2, LDP3 (see FIG. 12) output from the light shielding plate 35 and the third photointerrupter PI3 that move in the radial direction by the movement of the optical axis direction of That is, automatic focusing control is performed.

FIG. 10 is a cross-sectional view of the lens drive mechanism. The first helicoid ring 31 is connected to the lens drive motor ML via a gear 31a formed on the outer periphery and fixed to the helicoid retainer 2ba and the fixed barrel 2b. The movement of the helicoid retainer 36 in the optical axis direction is restricted by the first contact surface 36a of the helicoid retainer 36, and the movement in the radial direction is enabled. Further, the second helicoid ring 32 screwed into the first helicoid ring 31 is prohibited from being rotated by the straight guide plate 32a and is prohibited, and is movable in the optical axis direction.
Therefore, when the first helicoid ring 31 rotates, its rotational force is converted into the optical axis direction by the action of the helicoid, and the second helicoid ring 32 moves integrally with the taking lens 1 in the optical axis direction to adjust the focus. Done.

One end of the first helicoid ring 31 is supported by the first contact portion 36a of the helicoid retainer 36, and the other end is supported by the receiving portion 2ba of the fixed barrel 2b. Accordingly, when the first helicoid ring 31 is rotated by the lens driving motor ML, the first helicoid ring 31 does not directly push the second helicoid ring 32 in the radial direction, so that the lens driving motor ML has an extra capacity. Prevents torque from being applied.

The second helicoid ring 32 which advances and retracts in the optical axis direction maintains the optical axis accuracy, and the second contact portion 36b of the helicoid retainer 36 and the abutting 2b of the fixed barrel 2b.
supported by b and. With this configuration, it is possible to prevent the gravity of the second helicoid ring 32 from being applied to the first helicoid ring 31, which is a rotating portion, and to prevent an excessive torque from being applied to the lens drive motor ML. There is.

Further, the receiving portion 36 of the helicoid retainer 36
a, the second contact portion 36b, the receiving portion 2ba of the fixed barrel 2b, the abutting portion 2bb, etc., which are slid at the time of driving the lens, are plated with a metal having a good lubricating property in order to improve sliding. The lens drive motor ML is prevented from being applied with excessive torque.

In this way, the operating noise of the movable barrel 2a is reduced by reducing the load of the lens drive motor ML as much as possible. 5. Description of Circuit Block Diagram FIG. 11 is a circuit block diagram of the present electronic camera. This electronic camera controls various photographing operations with a microcomputer 80 as a core, and the microcomputer 80 has an infrared mode setting switch 13, a rewind dress switch 98, a back cover open / closed detection switch 99, a main dial 9 and a diaphragm. Dial 11, release button 10, up button 12, down button 14, self-start button 15, MF button 1
6, the select button 17, and the midway rewind button 18 are connected. The release button 10 includes a switch S1 and a switch S2.
When is pressed halfway, switch S1 is turned on to perform distance measurement and photometry, and when it is pressed deeply, switch S2 is turned on to perform shooting operation (focus adjustment, exposure control).

In addition, the microcomputer 80 includes a regulator 81 for stabilizing the power supply voltage, a reset circuit 82 for initializing the microcomputer, a DX code reading circuit 83 for reading DX code information laid on the film, and a center of the photographing screen. SPD1 that receives the subject brightness of a part (spot) and SP that receives the subject brightness of a wide range (average) within the shooting screen
Photometric circuit 84 with D2, 2 PSDs with infrared LED
Active distance measuring circuit 8 symmetrically arranged around
5. Two drivers 86a, 86b for driving the motors for moving the lens for moving the photographing lens, film feeding and opening / closing of the shutter, a driver 87 for driving a stepping motor for opening / closing the diaphragm, an EEPROM 88,
A display (liquid crystal) panel 89, a display section 90 in the finder, a battery check and temperature assurance circuit 91, and a strobe circuit 92 for strobe charging and light emission are connected.

The lens drive motor ML is provided with a lens position detector 93 comprising a first photo interrupter P11, a second photo interrupter P12, and a third photo interrupter P13. Output.

FIG. 12 is a lens driving time chart, in which the signal LDP1 is output from the first photo interrupter P11, and the pulse generation period is very short (actually, the timing is set more finely than the timing shown in the figure). Exist). The signal LDP2 is the second photo interrupter PI2.
, And the cycle is relatively long. Signal L
DP3 is output from the third photo interrupter PI3,
The signal state is changed once at the position on the left side (long-distance side) within the lens movement area. Further, in order to improve the stopping accuracy of the taking lens 1 which is moved by the lens driving motor ML, a positive voltage or a negative voltage is repeatedly applied depending on the number of pulses of the LDP 1 and the elapsed time.

The film feeding motor MF has one pulse
A film feeding signal generator 94 for generating a film feeding signal (pulse signal) SSP corresponding to the feeding of one frame is provided, and the generated film feeding signal is generated by the microcomputer 80.
Is output to. The film is wound up by a film take-up reel connected to a film feeding motor MF, and the sprocket meshing with the perforation of the film is rotated as the film is transferred. On the upper surface of this sprocket, a disk, half of which is a conductive member and the other half of which is made of an insulating member, is attached. The film feeding signal generating unit 94 brings the contact piece into contact with this disk, and H (High)
h), SSP in which one cycle of L (Low) corresponds to one frame
Generate a signal. 6. Description of shooting mode The main dial 9 is turned off (OFF), and the program mode (P), aperture priority mode (A),
This is a switch for switching and setting the manual mode (M). The photographer arbitrarily selects a photographing mode and photographs. 6-1. Program mode (P) In the program mode (P), set the main dial 9 to "P".
In this program mode (P), exposure is performed at an appropriate shutter speed that is automatically set according to the subject brightness, based on the aperture value specified by the aperture dial 11. . However, when proper exposure control cannot be performed only by changing the shutter speed, the aperture automatically changes. That is, the program mode (P) is used when the shutter speed that is darker than the minimum shutter speed (shake limit speed) and is lower than the minimum shutter speed at the aperture value arbitrarily set by the photographer in order to prevent shooting failures as much as possible. Controls the aperture value to the open side and to change the aperture value to the closed side when the subject is bright and a shutter speed higher than the maximum shutter speed is selected.

An exposure method in the program mode (P) will be described with reference to the program diagram of FIG. For example, the aperture value is set to F5.6 and film sensitivity ISO100,
A state in which the minimum shutter speed (shake limit speed) is set to 1/8 seconds and the maximum shutter speed is 1/250 seconds is shown. That is, when the aperture value is F5.6, EV9 to 14
Since the shutter speed is in the proper range of 1/8 to 1/250 seconds in the luminance range of, the shutter is driven with the aperture value set to F5.6.

When EV is smaller than 9, for example EV8, the shutter speed corresponding to the aperture value F5.6 is 1 /
4 seconds, minimum shutter speed (shake limit speed) 1 /
Since it is slower than 8 seconds, a proper exposure can be obtained by opening the aperture one step and setting F4.0 and the shutter speed to 1/8 second.

If the EV is greater than 14, for example EV15, the shutter speed is 1/500 seconds corresponding to the aperture value F5.6, and the maximum shutter speed is 1/25.
Since it is faster than 0 second, the proper exposure can be obtained by closing the aperture one step and setting F8 and the shutter speed to 1/250 second.

The shutter speed range is 1/8 to 1/2
Under the condition of 50 seconds, the range of EV5 to 16 is the proper brightness range, so the range of the dotted line shown in FIG. 13 is the proper exposure controllable range, and when set to F5.6, it is shown by the thick solid line. Change on the line.

In the program mode, the camera shake limit shutter speed can be changed. That is, in the present electronic camera, 1/30 seconds is set in advance as the shutter speed corresponding to the camera shake limit shutter speed, and this camera shake limit shutter speed is set from 1/4 second to 1/6.
It can be changed within the range of 0 seconds. This change is made as follows. That is, when the select button 17 is continuously pressed (2 seconds) from the state set to the program mode (P), the preset shake limit shutter speed “1/30” is displayed on the display panel 19. Therefore, by pressing the up button 12 or the down button 14 to change the camera shake limit shutter speed display displayed on the display panel 19, the photographer can arbitrarily set the camera shake limit shutter speed. It should be noted that, when another switch button is operated, or 3 seconds after the final operation of the up button 12 and the down button 14, the changeable state of the shake limit shutter speed is released.

When flash photography is performed using the dedicated flash in the program mode (P), variable aperture sync photography (a kind of slow sync photography) is performed. In other words, when the background is dim and a short-distance subject (person) is dark, etc. , The aperture is changed according to the subject distance, and the flash light is controlled to be appropriate.

FIG. 14 shows the guide numbers. , ISO effective sensitivity range of flash light is shown. This dedicated flash is GNo. 14, the aperture value FNo. Corresponding to the film sensitivity ISO 100 and 400. And the dimmable range of the flash is within 3.5 m. Further, in the case of ISO sensitivity 100, proper exposure is obtained by controlling the aperture for a subject within 7 m, and in the case of ISO sensitivity 400, proper exposure is obtained by controlling the aperture for a subject within 14 m. Therefore, for example, in order to make it possible to photograph both a 7-meter background and a 3.5-meter person with proper exposure on a film with an ISO speed of 100, variable aperture sync photography as shown in FIG. 15 is performed. That is, at first 7m
Aperture F2.0 to ensure proper exposure of the background at the position
The shutter is kept open for a while, then the aperture is stopped down to the aperture value F4.0 corresponding to the position 3.5m of the person, and when the aperture value is stopped down to F4.0, the flash light is emitted and the shutter is released. Is closed. 6-2. Aperture priority mode (A) The aperture priority mode (A) is set when the main dial 9 is set to the position "A". In this aperture priority mode (A), the aperture value set by the aperture dial 11 is set. Exposure is performed at an appropriate shutter speed that is automatically set according to the subject brightness. The aperture priority mode (A) is a mode in which the photographer selects an arbitrary aperture value in consideration of the depth of field (blur) and performs photography with the aperture value.

An exposure method in the aperture priority mode (A) will be described with reference to the program diagram of FIG. The aperture priority mode (A) is a mode in which shooting is performed with the selected aperture value fixed, and is a combination of the aperture value set as in the program mode (P) and a limited shutter speed range. When the proper exposure cannot be obtained, the control for changing the set aperture value is not performed. That is, as indicated by the thick solid line in FIG. 16, the set aperture value 5.6 remains fixed. Then, the proper exposure is obtained by changing the shutter speed in the range of 30 seconds to 1/250 seconds based on the program line corresponding to the subject brightness. When the aperture value is F5.6 and the film ISO sensitivity is 100, the range of the dotted line shown in the figure is the range in which the proper exposure can be controlled. 6-3. Manual mode (M) In the manual mode (M), set the main dial 9 to "M".
It is set when the position is adjusted to the position (1) and is used when the photographer arbitrarily selects the combination of the shutter speed and the aperture. 7. Viewfinder display When the release button 10 is pressed halfway, the switch S1 turns O
N, distance measurement, focus adjustment and photometry are performed, shooting information is displayed on the finder 7 and the display panel 19, and then the switch S2 is turned on by pressing it deeply to perform the exposure operation.

As the photographing-related information displayed on the finder 7 in the half-pressed state, as shown in FIG.
a, a green distance measuring mark 7b in the shape of "●" that lights up when the focus is adjusted to a distance that can be adjusted and blinks when the focus is not adjusted to the distance that the set aperture value and shutter speed are the subject. "-" Red underexposure warning mark 7c that lights when the brightness is under, and "+" red light that lights when the set aperture value and shutter speed are over the subject brightness. Overexposure warning mark 7
d etc.

The photometry range is changed by mode selection. In the manual mode (A), a very narrow range (spot) e1 in the center is measured, and in the program mode (P) and aperture priority mode, the center comparison is made. A wide range (average) e2 is measured. Further, the field frame 7a changes in association with the movement of the photographing lens to the focal position determined based on the subject distance information, and parallax correction is performed. That is, when the subject distance is a long distance, the frames on the upper and left sides are as shown by solid lines in FIG. 4, and when the subject distance is a short distance, the frames on the upper and left sides are as shown by dotted lines in FIG.
The distance display portion 7e indicates a distance of 0.6 m to ∞, and the distance information is displayed like a cutout portion 7ea by blocking light transmission at a position corresponding to the right extension line of the upper side of the field frame 7a. There is. 8. Display Panel (Liquid Crystal) FIG. 17 shows the exposure display contents when the shutter button 10 is half-pressed in the program mode (P). Figure 1
As shown in FIG. 7, when the proper exposure is obtained with the aperture value set by the aperture dial 11, the proper shutter speed is displayed on the display panel 19. If the proper exposure is not obtained with the set aperture value and the aperture value is automatically shifted,
The shifted proper aperture value is displayed on the display panel 19. Also, if underexposure occurs, the maximum aperture value F
2.0, or the handshake limit shutter speed of 1/30 seconds, blinks on the display panel 19. In the case of overexposure, the aperture limit value F22 or the maximum shutter speed 1
/ 250 seconds is displayed blinking on the display panel 19. 9. Main functions of this camera 9-1. Aperture control function When the main dial 9 is operated from OFF to ON, the aperture is moved to the position of the aperture value specified by the aperture dial 11, so the aperture can be moved before the release operation, and there is no time lag. You can shoot instantly.

When the main dial 9 is operated from ON to OFF, the aperture of the position of the aperture value designated by the aperture dial 11 is moved to open, and the aperture position is initialized. In other words, the diaphragm mechanism of this camera detects the mechanical position only when the diaphragm is opened as described above, so if the main dial 9 is in the ON state and the diaphragm is repeatedly changed, the driving error will gradually increase. Therefore, the aperture is initialized to open by turning off the main dial 9 so that accurate aperture control can be performed. 9-2. Control function for leaving the leading edge of the film After starting the rewinding of the film, the rewinding of the film is stopped for a certain period of time with the leading edge of the film remaining in the patrone, and if the back cover is opened during this period, the leading edge of the film will remain slightly in the patrone. If the cartridge is taken out from the camera body and the specified time has passed without opening the back cover while the specified time is being measured, the film is rewound again and the film is rewound after the leading edge of the film is stored in the cartridge. Since the patrone can be taken out from the camera body with the film front end housed in the patrone from the camera body when stopped, a simple structure can be obtained without adding an operation member or a switch. 9-3.2 Film position display function during frame feeding Rewind dress switch 98 installed in the camera body
Is turned on to set the rewinding mode, which is one of the film transfer modes. The film winding is performed with an unexposed frame left in the middle, and the unexposed frame is photographed when the film is rewound. In this way, a film frame number display section is provided for film feeding that eliminates the time lag associated with winding or rewinding all frames after or before shooting, and this display section displays the number of shooting frames during shooting. Then
When the rewinding operation is performed during shooting, the display of the shooting frame is changed to the number of frames corresponding to the drawing amount of the film, and the display is subtracted in conjunction with the rewinding.
Since one film frame number display section displays only the information required by the photographer, the feeding state of the film can be grasped instantly. 9-4. Silent function When the main dial 9 is turned on while pressing the MF button 16, the silent mode is set. In this silent mode, operating noises such as lens driving, diaphragm driving, and film feeding driving are reduced. When the rewinding sound is noisy, if the main dial 9 is turned off during the rewinding, the rewinding operation is temporarily stopped. After that, while pressing the MF button 16, the main dial 9 is turned off from the program mode or in the program mode. When the aperture priority mode or manual mode is set, rewinding starts in silent mode. 9-5. Auto bracket (AEB) shooting function Aperture dial 1 by operating release button 10 once
With the aperture set by 1 as a reference, the exposure amount is changed in a stepwise manner to change the exposure amount, and a plurality of frames are continuously photographed. 9-6. Exposure compensation function Set the main dial 9 to the P or A position, press the select button 17 to display the exposure compensation mark, and set the compensation value with the up button 12 and the down button 14. The LED in the viewfinder is based on the operation of the up button 12 and down button 14 when performing exposure compensation.
Is displayed when the exposure correction value is positive, a “+” LED, when the exposure correction value is negative, a “−” LED, and the exposure correction value is 0.
In the case of, it is possible to determine whether or not the operation is performed by instantaneously turning on "+" and "-". Dark and display panel 1
Exposure compensation is possible even when 9 is not visible.

When the manual (M) mode is set,
The photometry is started, the photometry result is compared with the set exposure value (shutter speed, aperture value), and the result is displayed on the LED in the viewfinder. In case of over, "+" L
ED, "-" LED for under exposure, and both "+" and "-" for proper exposure are turned on for a predetermined time (10 seconds). When it is dark and the display panel 19 cannot be seen and the shutter speed is desired to be adjusted to the proper exposure, when the up button 12 and the down button 14 are operated, the LED display "+" or / and "-" displayed at that moment is momentarily displayed. It is turned off, and it is possible to recognize that it has been operated. In addition, when the shutter speed is out of the set area, the LED display is not momentarily turned off, but the turned-on state is maintained so that it can be recognized that the set area limit has been reached. 9-7. Manual Focus (MF) Function The manual focus (MF) mode is a mode in which the photographer can set the focus position of the photographing lens at an arbitrary distance. For example, when shooting a moving object, in the auto focus (AF) mode, the distance may be deviated from the distance measuring point, and thus erroneous distance measurement is likely to occur.
Sometimes the shooting distance is predicted and the focus position is set at that distance.

In the camera of this embodiment, there are three types of manual setting of the taking lens as follows.

First, from the state where the AF mode has been set, the release button 10 is pressed halfway down
When the MF button 16 is pressed while 1 is ON, the focus position of the taking lens is fixed at the position adjusted in focus in the AF mode. The position continues until the MF button 16 is pressed again.

Second, from the AF mode state, the MF button 16
The MF mode is selected by pressing the
"999" (meaning infinity) is displayed on 9, and after a predetermined time (2 seconds), the photographing lens is driven to set the focus to infinity. It is canceled by pressing the MF button 16 again.

Thirdly, from the AF mode state, the MF button 16
When the MF mode is selected by pressing the button, “999” is displayed on the liquid crystal panel 10. However, if the up button 12 and the down button 14 are pressed while the MF button 16 is continuously pressed, the liquid crystal panel 19 displays “999”. 20.
In this state, "0" is displayed, and the up button 12 and the down button 14 can arbitrarily set the distance display from 0.6 to 20 m. After setting MF button 1
After the pressing of 6 is released, after a predetermined time (3 seconds), the position corresponding to the displayed distance is focused. 9-8. Focus Indication Function Positioning is performed accurately by aligning the distance information such as the initial position mark (AF) and the infinite position mark (∞) with the index based on the information stored in the EEPROM. 9-9. Bulb exposure function A long-time exposure with a shutter speed of over 30 seconds can be performed when shooting night scenes. "T--" is displayed on the display panel 19 during this time exposure. The time exposure setting is
Set the main dial 9 to the M position and select button 17
This is done by pressing and pressing the down button 14 to set the shutter speed display on the display panel 19 to "T--".
In this bulb photography, by pressing the release button 10 deeply and turning on the switch S2, the exposure operation is started, the release button 10 is turned off, and then the release button 10 is turned on.
The exposure operation is stopped by pressing and turning on S1. Since the exposure is ended by performing S1 which is a half-pressed state of the release button 10 for the bulb photographing, the camera shake can be reduced. 9-10. Infrared film use mode Infrared photography is possible. The infrared mode setting switch 18a is a button switch, and every time the button is pressed, a normal film (IR550) use mode, IR750 infrared film (film having maximum sensitivity at 750 nm, Konica-Infrared 750) is used. Mode, IR850 infrared film (film having maximum sensitivity at 850 nm, Kodak High Speed Infrared) use mode is set cyclically. IR750, IR8 based on normal film
In each infrared mode of 50, focus correction is performed so as to focus on the infrared wavelength of maximum sensitivity.

When any one of the infrared film use modes is set in the auto focus (AF) mode, when the release button 10 is half-pressed and the switch S1 is turned on, the object distance information is detected and stored in advance. The calculated correction value is calculated to determine the focus adjustment amount, and the focus of the taking lens is adjusted. 9-11. Film sensitivity setting The present invention relates to a film sensitivity setting device for a camera capable of automatically and manually setting the film sensitivity. As a memory of the film sensitivity, the microcomputer 80 has a first memory section in a register and the EEPROM has a second memory section. In the film sensitivity setting, when a film having DX information is loaded, the DX information is stored in the first storage unit as film sensitivity information, and from this state, the information stored in the first storage unit is manually operated. It can be changed. When a film without DX information is loaded, the previously stored information of the second storage unit is introduced into the first storage unit, and the film sensitivity information set by manual operation can be changed. It is stored in the first storage unit and the second storage unit from the state by a manual operation. When a film without DX information is loaded, the film sensitivity information is stored in the EEPROM based on a manual operation, so that it is not necessary to set again when a film without DX information of the same sensitivity is loaded again. . 9-12. Variable aperture control function During flash photography, in order to prevent both the main subject such as a person and the background from becoming dark, at first the natural exposure is performed under the aperture value set by the aperture dial 11 so that the background is properly exposed. Then, in order to properly expose the main subject, the subject distance measured and the guide number of the strobe circuit 92 are set. Flash exposure is performed under the aperture value calculated by. In addition,
First, in order to properly expose the main subject, the subject distance measured and the guide number. Flash exposure is performed under the aperture value calculated by and to make the background a proper exposure,
Natural exposure may be performed under the aperture value set by the aperture dial 11. 9-13. In the conventional camera, the top cover, the bottom cover, and the lens barrel are metal-plated as exterior members, so that static electricity or the like through the exterior members causes adverse effects such as runaway of the microcomputer. In other words, when the camera body is touched with a hand, the electric charge charged by the human may flow into the camera body and be applied to a circuit in the camera body, causing the microcomputer to run away.

Since the camera is made of a conductive member except for the case back, the camera does not charge when it is placed on the conductive surface (a desk made of a metal surface). However, only the portion of the outer cover, which is a non-conductive surface, hits the conductive surface of the back cover, and the charge cannot escape.
Therefore, when a conductive member that is in electrical conduction with the exterior member is projected from the outer cover on a part of the back cover and the back cover surface is placed down, the conductive member is brought into contact with the conductive surface. It allows the electric charge to escape even if it is touched by hand. 10. Flowchart (Control Operation) Next, various control operations by the microcomputer 80 will be described. 10-1. Initial setting 10-1-1. Main Routine (FIG. 18) This routine is a routine executed when a battery is loaded, and its purpose is to return to the state at the time when the battery was taken out. In this routine, a battery check (not shown, disables the camera when the power supply voltage is below a predetermined voltage), shutter drive mechanism,
The positions of the diaphragm drive mechanism and the lens drive mechanism are mechanically initialized (step FS-1). Then, in order to perform processing according to the state when the battery is removed, EEPRO
It is determined whether or not the [current winding mode] stored in M88 is rewinding (step FS-2).
As a result, if the state when the battery is removed is rewinding, it is next determined whether or not the back cover is closed (step FS-3). When it is determined that the case back is closed, a film rewinding routine is executed (step FS-
4). After rewinding, the [current number of shots] is set to 0, and the [current winding mode] is set to the non-DX autoload mode in order to shorten the abort time (abort time), and these are stored in the EEPROM 88 (step FS -5), and proceed to step (FS-9).

On the other hand, if the [current winding mode] is not rewinding, the [current winding mode] is the non-DX autoload mode (the state in which no film is loaded or the non-DX film is loaded). By determining whether or not the film is loaded when the battery is removed (step FS-
6). As a result, when it is determined that the current winding mode is the non-DX auto load mode, it is next determined whether or not the DX film is loaded (step FS-7). When the DX film is loaded, A film winding subroutine is executed to carry out autoloading, and autoloading is carried out (step FS-8).

In step (FS-9), the operation of the operation buttons and the operation dial of the camera is awaited, and the main dial scan routine, the aperture dial scan routine, and the operation button scan routine are sequentially executed. Next, when the position of the main dial is the position of the program mode (P) and the charging of the flash is completed (the camera of this embodiment uses the charging completion signal only in the program mode), the continuous operation is performed. Since automatic flash photography is not possible, clear the auto bracket (AEB) mode and set the flash mode (step FS-
10-12), and returns to step (FS-9). On the other hand, when the program mode (P) is set and charging of the flash is not completed, the non-flash mode is set (step FS-13) and the process returns to step (FS-7). Further, when the program mode (P) is not set, that is, when the aperture priority mode (A) or the manual mode (M) is set, the step (F
Steps (FS-9) skipping S-11 to 13)
Return to. 10-1. Back cover open routine (FIG. 19) This routine is executed when the back cover is opened.
When the case back is opened, the AEB mode, the exposure compensation, and the infrared film use mode are first cleared in order to reset and initialize various shooting modes (step FS-
15). Then, when the auto focus (AF) mode is selected, the photographing lens is moved to the initial position (steps FS-16 and 17), and step (FS-1).
When the AF mode is not selected, the process proceeds to step 8) without moving the lens because the photographing lens has already been moved to the initial position.

In step (FS-18), [Current IS
[O sensitivity] to a predetermined ISO sensitivity for non-DX, and [power supply O
FF rewind flag] is reset, the current number of shots is displayed as 0, the current winding mode is set to the non-DX auto load mode, and the variable for film winding is set to E.
Stored in EPROM 88. This step (FS-1
When the process of 8) ends, the process returns. 10-1-3. Hoisting routine when main is ON (main O
20. This routine is also called N hour routine 1) This routine is executed when the main dial 9 is turned on. In this camera, the rewinding operation is stopped when the main dial is turned off during the rewinding, and the rewinding operation is restarted when the rewinding is turned on again.

First, it is judged whether or not the [current winding mode] is rewinding (step FS-20). Perform the processing after step (FS-27), and if rewinding is not in progress, perform the processing of step (FS-21 to 2).
The process of step (FS-27) and the subsequent steps are performed without performing the process of 6).

That is, when the [current winding mode] is rewinding, when the [current number of shots] is 0, the film rewinding has been completed. It is determined (step FS-21), if it is not 0, the film rewinding subroutine is executed (step FS-22), and the process proceeds to step (FS-23).
If the number is zero, the film rewinding routine is not executed and the process proceeds to step (FS-23). Step (FS-23)
Then, it is determined whether or not the [current number of shots] is 0. As a result, if the number is 0, the display (liquid crystal) panel 19 continues to blink “0” while the back cover is closed, and when the back cover is opened, the back cover opening routine is executed ( Step FS-
24-26), and proceed to step (FS-27). When it is determined in step (FS-23) that the [current number of shots] is not 0, steps (FS-24 to 26)
And skip to step (FS-27).

In step (FS-27), it is determined whether or not the film auto-loading conditions are met. If the conditions are met, the auto-loading is performed. First, the current winding mode is the non-DX auto mode. Determine if it is in load mode. As a result, in the non-DX auto load mode, it is determined whether or not the DX film is loaded (step FS-28). If the DX film is loaded, S1 is turned on by the half-press of the release switch. And then O
When it detects that it is FF, the film winding subroutine (auto load) is executed (step FS-29),
To return. On the other hand, when it is not in the non-DX auto load mode and when the film is not loaded, the process returns. 10-1-4. Main dial OFF routine (also referred to as main ON routine 2 in FIG. 21) This routine is executed when the main dial 9 is turned ON. In this routine, battery check is performed, temperature information is taken in, the taking lens is moved to the initial position, the aperture is opened, the liquid crystal panel is turned off, the exposure correction value is set to 0, and the auto focus mode (AF) is set. Are initialized (step FS-30). next,
If the manual focus (MF) button 16 is ON, the temperature is room temperature or higher, and the battery voltage is equal to or higher than a predetermined voltage, the silent mode is set. If the above conditions are not satisfied, the silent mode setting is not performed ( In this camera, each drive device (aperture drive device, film feeding device, lens drive device) is used.
There are two power supplies for supplying electric power to the device, of which the normal mode is driven at a high voltage and the silent mode is driven at a low voltage. Further, the temperature is detected by allowing the silent mode only at room temperature or higher because the torque of the motor may weaken and winding may not be possible if low voltage driving is performed at low temperature. Next, if the case back is open,
After executing the back cover opening routine (steps FS-34, 3
5) Return, and if the case back is closed, the case returns without executing the case back opening routine. 10-2. Settings of various dials, switches and buttons 10-2-1. Main dial scan routine (Fig. 2
2) This routine is called in the main routine described above. In this routine, the set position of the main dial 9 is detected and its mode is set. First, it is judged whether or not the position of the main dial 9 is OFF (step FS-40), and if it is OFF. For example, the main dial OFF routine is executed (step FS-41), and then it is determined again whether or not the position of the main dial 9 is OFF, that is, whether or not the position has been changed to ON (step FS-42). As a result, if the position of the main dial 9 remains OFF, the process returns to step (FS-42). On the other hand, when the position of the main dial 9 changes to ON, the program (P) mode / aperture priority (A) mode
One of the manual (M) modes is set as the [current main switch position], it is displayed on the liquid crystal panel, the aperture selected by the aperture dial 11 is driven at low speed (low voltage), and the main dial is turned on. The winding routine is executed (step FS-43), and the liquid crystal display according to the current mode is performed, that is, the number of shots is displayed in the program mode, and the exposure correction value is displayed in the aperture priority mode. If it is in manual mode, display the shutter speed (step FS-44),
To return.

When it is determined in step (FS-40) that the position of the main dial 9 is not OFF, it is determined whether or not the position of the main dial 9 has been changed (step FS-45). If not, it leans without doing anything, and if changed, the result of the change is set as [current position] (step FS-46), and step (FS)
Go to -44). 10-2-2. Aperture dial scan routine (Fig. 2
3) This routine is called in the main routine described above. In this routine, the current position of the aperture dial 11 is different from the position of the aperture dial 11 set in the variable [inp_av], and when it is determined that the position of the aperture dial 11 has been changed, The position 11 is set to a variable [inp_av], the diaphragm is driven to the changed diaphragm position at low speed (low voltage), and the diaphragm position related to the change is displayed on the liquid crystal panel (step F
S-50, 51) and return. On the other hand, when the position of the aperture dial 11 has not been changed, the process directly returns. 10-2-3. Operation Button Scan Routine (FIG. 24) This routine is called in the main routine described above. In this routine, the operation status of various switch buttons is checked, processing is performed according to the operated switch button, and the process returns. That is, when the switch S1 is turned on, pu for performing exposure and distance measurement and selecting exposure conditions
The sh_s1 routine is executed (step FS-55,
56). Manual focus (MF) button 16 is O
If NO, the focus position of the taking lens 1 is set based on the manual focus process, that is, the operation of the MF button 16 as described above (step FS-5).
7, 58). When the select button 17 is turned on,
SELECT processing, for example, with the main dial 9 in the P position as described above, press the select button 17 to display the exposure correction mark, and set the exposure correction value by operating the up button 12 and the down button 14. (Steps FS-59, 60). When the up button 12 is turned on, the UP_PUSH routine is executed to switch the exposure correction value to the over side in the exposure correction enabled state (steps FS-61 and 62). When the down button 14 is turned on, the DOW_PUSH routine is executed to switch the exposure correction value to the under side in the exposure correction enabled state (steps FS-63 and 64). When the case back is opened, the case back opening routine is executed (steps FS-65, 66). When the midway rewind button is turned on, a film rewind subroutine is executed (steps FS-67, 68). 10-2-5. UP_PUSH Routine (FIG. 25) This routine is called in the operation button scan routine. In this routine, if the [current correction value] is not the maximum "2" in the exposure correction mode, the [current correction value] is incremented by 1/3 (steps FS-70 to 7).
2). If the result is "0", the over and under LEDs in the finder are displayed for 0.2 seconds (steps FS-73, 74), and then step (FS-7).
6) Go to the subsequent steps. On the other hand, if the [current correction value] does not become "0" even if only +1/3 is added, only the over LED in the finder is displayed for 0.2 seconds (step FS-75), and the step ( Proceed to FS-76) and later. When not in the correction mode, or when the [current correction value] has already reached the maximum value of "2" in the exposure correction mode, the [current correction value] increment processing is not performed, and steps (FS-76) and after are executed. Proceed to.

After step (FS-76), the up processing according to the mode is performed and the process returns. That is,
In the shutter motor speed change mode, the [current shutter speed] is increased stepwise (step FS-7).
6, 77). In the ISO change mode, the [current ISO sensitivity] is increased stepwise. Then, in the non-DX film state, [current ISO speed] is set to [non-DX ISO speed], but in the non-DX film state, [current ISO speed] remains increased (step FS- 78-81). If the camera shake limit shutter speed change mode is set, the current camera shake limit shutter speed is increased (steps FS-82 and 83), and if the AEB step change mode is set, the change amount of the current AEB step is increased (step FS-82, 83). FS-84, 85). 10-2-6. DOWM_PUSH Routine (FIG. 26) This routine is called in the operation button scan routine. In this routine, if the [current correction value] is not the minimum "-2" in the exposure correction mode,
[Current correction value] is decreased by -1/3 (step FS-90-
92). If the result is "0", the over and under LEDs in the finder are displayed for 0.2 seconds (steps FS-93, 94), and step (FS-9).
6) Go to the subsequent steps. On the other hand, even if it is -1/3, [current correction value]
If is not “0”, only the over LED in the finder is displayed for 0.2 seconds (step FS
-95), and proceeds to step (FS-96) and subsequent steps. When not in the correction mode or when the [current correction value] is already at the minimum "-2" in the exposure correction mode, the step (FS-
96) and subsequent steps.

After step (FS-96), the down processing according to the mode is performed and the process returns. That is,
In the shutter motor speed change mode, [current shutter speed] is decreased (steps FS-96, 9).
7). If the ISO change mode is selected, the [current ISO
Sensitivity] is reduced. Then, in the non-DX film state, [current ISO speed] is set to [non-DX ISO speed], but in the non-DX film state, [current IS speed]
O sensitivity] remains at the reduced value (step FS-
98-101). If the camera shake limit shutter speed change mode is set, the current camera shake limit shutter speed is decreased (steps FS-102 and 103), and if the AEB step change mode is set, the change amount of the current AEB step is decreased (step FS-84, 85). 10-3. Shooting condition setting 10-3-1. Determination of Shooting Conditions Next, a P calculation routine, a P mode S1 time calculation routine,
The AM mode S1 o'clock calculation routine, the M mode S0 o'clock calculation routine, and the flash mode S1 o'clock calculation routine will be described. In these routines, the aperture value and shutter speed for shooting are calculated, but prior to the explanation of these routines, the formulas for determining the aperture value, shutter speed, etc., the control values and constants used in each of the above routines , Variables, etc. will be explained.

The following formula is established between the shutter speed and the brightness and aperture value.

[0061]

## EQU1 ## tv = (lv + sv + cv)-(av + OFF
SET + av_adjust) tv: shutter speed, lv: brightness (ISO sensitivity 10
EV value when 0) sv: ISO sensitivity, av: Aperture value cv: Correction value, OFFSET: 4 (constant) av_adjust: Correction of aperture error (constant) In the above routines, (lv + sv + cv) is a variable [tv0 ], (Av + OFFSET + av_adj
ust) is processed as a variable [tv1]. When obtaining the aperture value, shutter speed, etc. based on this equation, the microcomputer 80 uses the management numerical values shown in FIGS. 27 and 28.

27 and 28 show lv (luminance) and tv.
(Shutter speed), sv (ISO sensitivity), av
(Aperture value), cv (correction value), gv (guide No.),
The management numerical values (numerals in the # column) used by the microcomputer 80 are shown in correspondence with afz (subject distance).
For example, the microcomputer 80 outputs 1 when the brightness is +2.00.
2 is used, 66 is used when the shutter speed is 1/30 second, 24 is used when the sensitivity is ISO100, 18 is used when the aperture value is F5.6, and the correction value is 0.
In the case of, the guide number is 12. When 0 is used, 0 is used, and when the subject distance is 5.5 m, 11 is used to perform various calculations. It should be noted that the control value relating to the exposure calculation is determined to be increased by 6 each time the corresponding value is increased by one step.

29 and 30 show a flashmatic table, which is a table No. corresponding to the management numerical value corresponding to afz (subject distance) in FIGS. And is used when calculating the appropriate flash F value.

31 and 32 show constants and variables used in various routines, respectively. Explaining the main variables, the aperture value actually executed is finally set in the variable [execution aperture value]. The variable [input aperture value] is set to the aperture value specified by the aperture dial 11. A shutter speed that is actually executed is finally set in the variable [execution speed]. 10-3-2. P calculation routine (FIG. 33) In this routine, the aperture value specified by the aperture dial 11 in the program mode (P) is used as a reference and is automatically set at an appropriate shutter speed according to the subject brightness.
When proper exposure control cannot be performed only by changing the shutter speed, the aperture is automatically shifted. In other words, when the subject brightness is dark and the shutter speed below the camera shake limit shutter speed is selected, the aperture value is changed to the open side, and when the subject is bright and the shutter speed above the maximum shutter speed is selected, the aperture value is changed to the closed side. Are controlled. The P calculation routine is a routine for calculating this aperture shift. In this routine, the P calculation end flag is reset, the P calculation result is set to the P calculation result non-shift OK, the high speed limit transcendence flag, the low speed limit transcendence flag, and the FL compulsory flag are reset, and the current brightness + current sensitivity + input correction value. Is calculated and this calculated value is set to tv0 (step F-35).
0). That is, in order to shorten the calculation time, tv0 that can be calculated at this point is calculated in advance. Then, until the P calculation end flag is set, the P-LOO will be described next.
Execute the P routine (steps F-351, 35
2) Return. 10-3-3. P-LOOP Routine (FIGS. 34 to 38) In this routine, from the execution aperture value to the aperture exposure adjustment value (av_
adjust), and (aperture exposure adjustment value + OFFSET)
The calculated value of (+ execution aperture value) is tv1 (step F-3).
55). Next, it is judged that tv1 ≧ tv0, and tv1
When ≧ tv0, that is, when the shutter speed becomes slower than 60 seconds, there is no numerical value corresponding to the management numerical values shown in FIGS. 27 and 28, so the low speed limit transcendence flag is set (step F-356, 357), at this time
When the actual aperture value is F2.0 which is the maximum aperture value, the shake limit shutter speed is set as the actual speed, the P calculation result under is set as the P calculation result, and the P calculation end flag is set (step F -358, 359), and return. When the shutter speed becomes slower than 60 seconds, the effective aperture value is not F2.0, which is the maximum aperture value. If it is possible to widen the aperture value to the maximum aperture, open the effective aperture value by half the aperture. P calculation result shift OK as P calculation result
Is set (steps F-358, 360) and the process returns and the execution aperture value is changed so that the proper speed can be calculated. If the shutter speed can be calculated so that the shutter speed is faster than 60 seconds and proper exposure can be performed, the calculation result of (tv0-tv1) is set as the execution speed (step F-361). When the set execution speed is slower than the camera shake limit shutter speed and the FL compulsory flag is set (steps F-362 and 363), the P calculation end flag is set (step F-364), To return. Execution speed set is slower than camera shake speed, and FL
When the compulsory flag is reset, the low speed limit transcendence flag is set (step F-365). And
When the aperture value is F2.0, which is the maximum aperture value, the camera shake speed is set as the execution speed, and P is set as the P calculation result.
The calculation result under is set, the P calculation end flag is set (steps F-366 and 367), and the process returns. When the shutter speed is slower than the camera shake speed, the effective aperture value is not F2.0, which is the maximum aperture value. By setting the P calculation result shift OK (step F-368) and returning, the execution aperture value is changed so that the proper speed calculation becomes possible.

When the execution speed becomes faster than the maximum speed,
Set the high speed limit transcendence flag (step F-36).
9, 370). When the execution speed is higher than the maximum speed and the execution aperture value is the minimum aperture value F22, the maximum speed is set as the shutter execution speed, and P
P calculation result over is set as the calculation result, and the P calculation end flag is set (steps F-371, 37).
2) Return. When the execution speed becomes faster than the maximum speed, the execution aperture value is not the minimum aperture F22,
If the aperture value is still reduced, the execution aperture value is reduced by half a step, the P calculation result shift OK is set as the P calculation result (step F-373), and the flow returns to enable execution of the appropriate aperture value. To change. When the execution speed is less than the maximum speed, the P calculation flash mode is set to P
If the flash calculation mode is not set, the P calculation end flag is set (steps F-374 and 375) and the process returns.

Through the above processing, the shutter speed is selected so as to reach the set aperture value. If the shutter speed is out of the interlocking range, the set aperture value is gradually changed to set the shutter speed. Are controlled so that they are within the interlocking range. That is, the aperture value is controlled to be as close as possible to the set aperture value.

When the P calculation flash mode is the P flash calculation mode, the processes of step (F-376) and subsequent steps are performed. The significance of this process will be described with reference to FIG.
Since the appropriate flash aperture value is obtained by considering only the subject distance without considering external light as described later, it may differ from the effective aperture value. In this case, if the flash photography is executed at the execution aperture value, the flash may become under or over. For example, when the appropriate flash light aperture value becomes smaller than the effective aperture value because the outside light is very bright and the subject distance is long, if the flash photography is performed at the effective aperture value, the flash becomes underexposed. To eliminate this under, it is necessary to open the diaphragm. On the contrary, since the outside light is dark and the subject distance is short, if the flash appropriate aperture value is larger than the execution aperture value and the flash photography is executed at the execution aperture value, the flash becomes over. In order to eliminate this over, it is necessary to narrow down the aperture. In the case of variable aperture synchro photography, the shutter speed (execution speed) needs to be slower than 1/60 seconds due to the speed of the diaphragm by moving the diaphragm into the shutter opening, and the execution speed is the camera shake limit speed to 1 / 6
The aperture is changed within the range of 0 seconds to eliminate the under or over.

FIG. 39 shows this change. At the time of proceeding to step (F-376), the execution speed is 1/60 second to 1/250 second of [2] in the table, or 1/15 second of [3] (blurring speed limit) to 1 /. It is either 60 seconds. As shown in OK in Table 7,
When the execution speed is 1/60 seconds to 1/250 seconds, or (shake limit speed) to 1/60 seconds, and the flash appropriate aperture value and the execution aperture value are equal, the above-mentioned under or over does not occur. The aperture is not changed. On the other hand, the execution speed is 1 /
60 seconds to 1/250 seconds, or (shake limit speed) to 1
In the case of / 60 seconds, if the proper flash aperture value is smaller than the actual aperture value, the above-mentioned under occurs, so the aperture is opened to eliminate this. Also, the execution speed is 1/60 second to 1/25
In the case of 0 second, when the proper flash aperture value is larger than the effective aperture value, the above-mentioned over occurs, so the aperture is stopped to eliminate this. In addition, the execution speed is (shake limit speed) ~ 1 /
In the case of 60 seconds, the above-mentioned over occurs even when the proper flash aperture value is larger than the execution aperture value. However, at this execution speed, the above-mentioned over can be eliminated by the variable aperture sync photography described later. Do not change.

As shown in the column [1] of FIG. 39, when the execution speed is 1/250 seconds or more of the high speed limit,
The high speed limit transcendence flag is set and the aperture is narrowed down.
73). Further, as shown in the column [4] of FIG. 39, the execution speed is at the low speed limit (camera shake limit speed).
In the following cases, the low speed limit transcendence flag is set and the aperture is opened. These processes are executed in the steps (F-357, 360), respectively. The high speed limit transcendental flag and the low speed limit transcendental flag are used as follows.
That is, when the aperture is changed, the P-LOOP routine is repeatedly executed to change the aperture and the shutter speed at a value as close as possible to the proper flash aperture. If the flag or the low speed limit transcendence flag is set,
Stop repeating this P-LOOP routine to avoid looping indefinitely.

Next, the step (F-376) and subsequent steps of this P-LOOP routine will be described.

If the appropriate flash aperture value determined by the below-described appropriate flash aperture F value calculation routine is equal to the actual aperture value, the P calculation end flag is set (steps F-376, 37).
7) Return. In this way, when the P calculation end flag is set and the process returns, the step (F-
As is clear from 351), the repetition of this P-LOOP routine is stopped.

If the proper flash aperture value is not equal to the actual aperture value, the following processing is performed. If the proper flash aperture value is smaller than the effective aperture value, that is, [2] or [3] in [A] of FIG. 39, and the high speed limit transcendence flag is set (steps F-378, 379). , P calculation end is set (step F-380) and the process returns. If [2] or [3] in [A] of FIG. 39 and the high speed limit transcendence flag is reset, it is determined whether or not the execution aperture value is F2.0 of the open aperture (step F -38
1) If F2.0, the aperture cannot be opened any further, so that the execution speed is set to the camera shake speed so that the undershoot is reduced as much as possible, and the P calculation result is set to the P calculation under
Set the calculation end flag (step F-382),
To return. On the other hand, if it is not F2.0, the aperture can still be opened, so the execution aperture value is set to a half-stage (AV-STEP) open value, and the P calculation result is set to the P calculation result shift OK (step F-383). To return.

When it is determined in step (F-378) that the proper flash aperture value is larger than the effective aperture value, that is,
In the case of [C] in FIG. 39, the execution speed is 1/6.
If it is 0 seconds or less, the P calculation end is set (steps F-384 and 385) and the process returns. Execution speed is 1 /
If the camera shake speed is faster than 60 seconds and the camera shake speed is 1/60 seconds, the FL compulsory flag is set (step F-38) to avoid repetition of [2] and [3] in [C] of FIG. 39.
6, 387), and return. On the other hand, the execution speed is 1/6
If the camera shake speed is faster than 0 seconds and the camera shake speed is not 1/60 second,
It is determined whether or not the execution aperture value is F22, which is the minimum aperture value (step F-388). If it is F22, the aperture value cannot be further reduced. The P calculation result is made to be small, the P calculation is made over, the P calculation end flag is set (step F-389), and the process returns. On the other hand, if it is not F22, the aperture value can still be narrowed down, so the execution aperture value is set to half (AV-STE
P) Reduce the value and shift the P calculation result to the P calculation result OK
Then (step F-390), the process returns. 10-3-4. P-mode S1 time calculation routine (Fig. 40-
41) This routine finds a shutter speed suitable for the set aperture value according to the program diagram as shown in FIG. 4. However, if proper exposure cannot be obtained only by changing the shutter speed, the aperture value is changed. Also change the value.

In this routine, the [input aperture value] is set to [execution aperture value] and the [P calculation flash mode] is set to the stationary light calculation mode (step F-300). Next, it is determined whether or not the current luminance is a value larger than LV_MAX (108) and a negative value, that is, EV0 or less (step F-
301), if EV0 or less, step (F-302
~ 308) are performed. That is, if the current brightness is 0
As a result, the P calculation routine is executed (step F-30).
2). When the P calculation result is P calculation non-shift OK, and the shutter speed can be calculated without shifting the aperture value set by the user (in such a case, the outside light is very dark and the ISO sensitivity becomes abnormal. Occurs when high)
Displays the execution speed, sets [LED blinking speed] to high speed blinking, [LED blinking BIT] to under display, and LC
The under-warning display is performed by setting the D blinking flag (steps F-303 and 304), and the process returns. On the other hand, when the P calculation result is not the P calculation non-shift OK, if the input aperture value and the execution aperture value are equal, that is, if the proper exposure is obtained without changing the aperture value set by the user, the shutter speed is executed. Displays the speed, and when [Input Aperture Value] and [Execution Aperture Value] are not equal, the proper exposure cannot be obtained with the aperture value set by the user, and when the aperture value is changed, the execution aperture value as the change result is displayed. Yes (Step F
-305 to 307). Then, the LED blinking flag is set to high-speed blinking, [LED blinking BIT] is set to the under display state, and the LCD blinking flag is set to display the under warning blinking (step F-308), and the process returns.

If it is determined in step (F-301) that the "current brightness" is EV0 or higher, the current brightness is EV.
If 16 or more, the current brightness is forcibly set to EV16 and E
If it is not V16 or more, the current brightness is not changed, the LED blinking BIT is not displayed, the LED blinking speed is set to no blinking, and the LCD blinking flag is reset so that there is no display for the time being, and the P calculation routine is executed. Execute (steps F-309 to 311). Next, if the P calculation result is the P calculation non-shift OK, the execution speed is displayed (steps F-312 and 313) and the process returns. On the other hand, if it is not P calculation non-shift OK, if it is P calculation shift OK, the execution aperture value is displayed (step F-31).
4, 315) and returns. If the P calculation shift is not OK, the LED blinks so that the P calculation result is under, if the P calculation result is over, and the over is blinked when the P calculation result is over.
Change the bit state of IT (steps F-316 to F-3)
18). Next, the [LCD blinking flag] is set so that the LED blinking speed becomes high-speed blinking (step F-31).
9). Then, if the [input aperture value] and the [execution aperture value] are equal, the execution speed is displayed, and if the input aperture value and the execution aperture value are not equal, the execution aperture value is displayed (steps F-320 to 3).
22) and return. 10-3-5. A-M mode S1 time calculation routine (Fig. 4
2 to 44) This routine is executed when the switch S1 is turned on in the A (aperture priority) mode or the M (manual) mode.

In this routine, if the manual mode is selected and the input speed is the time exposure (TIME in the table),
The LED blinking speed is set to no blinking, the LCD blinking flag is reset, and the execution speed is set to the input speed (step F-4
00-402), and returns.

In the aperture priority mode or when the input speed is not time exposure in the manual mode, the LED flashing speed is set to high speed flashing and the LCD flashing flag is set in order to set the low brightness under warning for the time being (step F- 403). Then, in the aperture priority mode, bit information indicating that under is displayed is set in the LED blinking BIT, and in the manual mode, this setting is not performed (steps F-404 and 405). Next, the input aperture value is set to the execution aperture value, and the low-luminance photometric range out-of-range flag is reset (step F-406). Then, if a value equal to or higher than LV_MAX (108) in the table, that is, a negative value (EV is 0 or less) is set as the current brightness, EV0 is set as the current brightness, and the low brightness metering range out flag is set. , 0 or less EV is not set, this process is not performed (steps F-407, 4).
08). Then, in the manual mode and when the current brightness is less than EV3, EV3 is set as the current brightness and the low brightness metering range out flag is set, but in other cases, this process is not performed (step F- 409-
511). Next, in the aperture priority mode and the current brightness is E
If it is V16 or higher, EV16 is set as the current brightness, and otherwise, this processing is not performed (steps F-512 to 514).

Next, in the aperture priority mode, (current brightness + current sensitivity + input correction value) is calculated, and this calculated value is set to tv0. In manual mode, (current brightness + current sensitivity + CV_ZERO). Is performed and the calculated value is set to tv0 (steps F-415 to 417). Then, from the actual aperture value to the aperture exposure adjustment value (av_adjus
t) is obtained, and this aperture exposure adjustment value is set in the variable [a], and (input aperture value + OFFSET + aperture exposure adjustment value) is calculated, and this calculated value is set as tv1 (step F-41).
8). Next, whether or not the value of tv1 + 6 (30 seconds) becomes larger than tv0, that is, whether the execution speed obtained by (tv0-tv1) becomes longer than 30 seconds in the case of tv0 and v1 is determined. Judging, if the execution speed is longer than 30 seconds, set 1/30 seconds as the execution speed,
Display this 30 seconds (Steps F-419, 42
0), return. With the above processing, the maximum execution speed (minimum speed) is 30 seconds in the aperture priority mode and the manual mode. When the execution speed becomes shorter than 30 seconds in the case of tv0 and v1, the speed is set as the execution speed for the time being (swipe F-42).
1). The set execution speed is the maximum speed (1/25
0 seconds), the execution speed is 1/2 of the maximum speed
It is reset to 50 seconds (steps F-422 and 423).
Then, in the aperture priority mode, blinking over is displayed in the finder, 1/250 seconds is displayed on the liquid crystal panel and the process returns, but in manual mode, over is not displayed and only 1/250 seconds are displayed. Is displayed and the process returns (steps F-424 to 426). Through the above processing, the minimum execution speed (maximum speed) is 1/250 seconds in the aperture priority mode and the manual mode.

Next, by the processing of steps (F-428 to 434), if the execution speed is equal to or lower than the camera shake limit speed in the aperture priority mode, the execution speed is blinked at a low speed,
To return. 10-3-6. M mode S0 time calculation routine (FIG. 45-
46) This routine is a routine for displaying "+" and "-" by the LED in the finder in the manual mode. In this routine, the number 1 is transformed

[0080]

## EQU00002 ## Exposure deviation (cv) = input speed (tv) + input aperture value (av) + OFFSET + aperture exposure adjustment value (av_ad
just)-{current brightness (lv) + current sensitivity (sv)}.

First, the execution speed is set to the input speed, the execution aperture value is set to the input aperture value, the LED blinking speed is set to no blinking, and LE is set.
D flashing flag is reset and initialization is performed (step F
-450). Next, if the input speed is time exposure, bit information indicating that nothing is displayed on the LED in the viewfinder is set in the LED blinking BIT (step F-45).
1, 452) and returns. If the input speed is not time exposure, the current brightness is set to the variable [a], and if the current brightness is outside the low brightness photometric range, that is, LV_MAX.
If it is larger (negative value) or smaller than EV3, the bit information indicating that nothing is displayed on the LED in the finder is set in the LED blinking BIT (steps F-453 to 455) and the process returns.

When the current brightness is within the low brightness photometric range,
The aperture exposure adjustment value (av_adjust) is calculated from the execution aperture value, this aperture exposure adjustment value is set in the variable [a], and the input speed (tv) + input aperture value (av) + OFFSET + diaphragm exposure adjustment value (av_adjust) is calculated. Is performed to set tv0 as the calculated value, and {current luminance (lv) + current sensitivity (sv)} is calculated to set the calculated value as tv1 (step F-456). In this case, [tv0]-[t
The value of v1] is the exposure deviation (cv). Next, when tv0 is smaller than tv1 and the calculated value of the exposure deviation (cv) becomes negative, that is, when it exceeds +2.0 or more, the LED for blinking the over-warning mark “+” is displayed.
Perform bit operation of blinking BIT (step F-457,
458), and returns.

On the other hand, the calculated value of the exposure deviation (cv) is +2.
If it does not exceed 0 or more, [tv0]-[tv
1] is calculated and the value is set as a variable [exposure deviation] (step F-459). The variable [exposure deviation] is shown in the table OVER_LEVEL (12-1 = 11).
If it is smaller, it means overexposure, and the bit operation of the LED blinking BIT is performed so as to blink the over-warning mark "+" (steps F-460 and 461), and the process returns. On the other hand, the variable [exposure deviation] is
If it is larger than NDER_LEVEL (12 + 1 = 13), it means that the exposure is underexposure. Therefore, a bit operation of LED blinking BIT is performed so as to blink the under warning mark "-" (steps F-462 and 463), and the process returns. In addition, the variable [exposure deviation] is shown in the table
If it is larger than LEVEL and smaller than UNDER_LEVEL, that is, if the exposure deviation (correction value: cv) is 0.0 or ± 1/6, [+] and [-] blink at the same time to notify the appropriateness. Perform bit operation of LED blinking BIT to display (step F-464),
To return. 10-3-7. Flash proper F value calculation routine (Figs. 47 to 4)
8) This routine is a routine for obtaining an appropriate F value (aperture value) from the subject distance in the flash mode. When the flash is installed in the program mode, the flash mode is set. In this routine,

[0084]

[Equation 3] [appropriate flash aperture] = [imp-gv (guide N
0. )] + [Current sensitivity] + [flashmatic table, afz] is used to find the proper aperture stop. In this routine, in the auto focus mode, the AFZ is calculated based on the subject distance obtained by distance measurement and set to the variable [X]. In the non-auto focus mode, the currently set subject distance is set. Based on this, the AFZ is calculated and set in the variable [X] (steps F-500 to 502).
Next, let gv0 be the X-th control value in the flashmatic table, and let the calculated value of dimming maximum GN + current sensitivity be gv.
v1 (step F-503). If gv1 is smaller than gv0, the subject distance is so far that the flash light cannot reach even if the aperture is opened. In this case, the under-warning mark [-] is made to blink at high speed, and the LCD blinking flag is set. Set and set the appropriate flash aperture to F2.
The value is set to 0 (steps F-504 and 505) and the process returns. If gv1 is greater than or equal to gv0, the flash light reaches the subject distance. In this case, [gv1
1]-[gv0] is calculated, and this calculated value is set as an appropriate flash aperture (step F-506). If the calculated proper flash aperture is smaller than F4.0, the subject distance is farther than the dimmable distance. In this case, the aperture is opened.
That is, in order to perform control with the calculated proper flash aperture, no warning mark is displayed, the LCD blinking flag is reset, the calculated proper flash aperture is normalized (steps F-507 and 508), and the process returns. The normalization of the appropriate flash aperture is performed for the following reason. That is, the calculated proper flash aperture (control value) may be a value other than a multiple of 3 even though the aperture value in the control value can be only a multiple of 3, so that the rounding process makes it a multiple of 3. I have to. Specifically, the calculation is int {([appropriate flash light aperture] +1) / 3} × 3. If the calculated appropriate flash aperture is F4.0 or more, the subject distance is closer than the dimmable distance, and the aperture must be stopped. Therefore, the minimum dimming GNo. ＋ Current sensitivity calculation value is variable [a]
(Step F-509), the calculated value is gv
When it is 0 or less (step F-510), the light can be adjusted with the proper light adjustment diaphragm, so that no warning mark is displayed and the LCD blinking flag is reset in order to perform the control with the proper light adjustment diaphragm. Use the proper light control aperture as the appropriate flash aperture (Step F
-516), and return.

On the other hand, when the calculated proper flash aperture is smaller than F4.0, it is impossible to adjust light by the proper light control aperture, so the proper flash aperture at the minimum light control GN is calculated. That is, the calculated value of the variable [a] -gv0 is set as the appropriate flash aperture (steps F-510 and 511). If the calculated proper flash aperture is F22 or more, even if the minimum aperture is adjusted with the minimum dimming GN, it will be over. Set the proper aperture to F22 (steps F-504, 50
5) and returns (steps F-512 and 513).
When the calculated proper flash aperture is smaller than F22 and the proper flash aperture is larger than the proper aperture control value, no warning mark is displayed in order to perform control with the calculated proper flash aperture. The LCD blinking flag is reset and the calculated proper flash aperture is normalized (step F-5).
14, 515) and returns. 10-3-8. Calculation routine for flash mode S1 (FIG. 49)
˜50) This routine is executed when the switch S1 is turned on in the flash mode which is set when the flash is attached in the program mode (P).

In this routine, first, a flash appropriate F value calculation routine is executed to judge whether or not the current brightness is larger than LV_MAX, that is, smaller than EV0 (steps F-520 and 521). As a result, the current brightness is EV
If it is smaller than 0, the current brightness is set to EV0, and in the flash mode, shooting is performed at EV0 or higher (step F-522). If the current brightness is EV0 or more, it is determined whether the current brightness is EV16 or more, and EV
If it is 16 or more, the current brightness is set to EV16 so that the image is shot at EV16 or less in the flash mode (steps F-523 and 524). Current brightness is EV0
If it is within the range of EV16, the current brightness is not changed.

Next, the execution aperture value is set to the input aperture value input by the aperture dial 11, and it is determined whether or not the execution aperture value (input aperture value) is larger than the proper flash aperture (step F-
525, 526). As a result, if the input aperture value is larger than the proper flash aperture value, it means that the aperture value input by the user is under, so the proper flash aperture value is set as the execution aperture value (step F-527). When the input aperture value is equal to or smaller than the appropriate flash aperture value, it means that the aperture value input by the user does not become under. Therefore, the user's will is respected and the execution aperture value is left as the input aperture value.

Next, the P calculation flash mode is set to the P flash calculation mode, and the P calculation routine is executed (step F
-528). Then, as a result of executing the P calculation routine,
It is determined whether or not the P calculation result is below the P calculation result (step F-529). When the P calculation result is below, the proper flash aperture is displayed (step F-53).
0), return.

When the P calculation result is not under, it is further determined whether or not the P calculation result is the P calculation result shift OK (step F-531). As a result, when the P calculation result shift is OK, it is judged whether or not the effective aperture value is larger than the proper aperture value. Means that the under warning mark blinks at a low speed and the execution speed is displayed (steps F-532, 53).
3) Return. On the other hand, if the effective aperture value is smaller than the proper aperture value, then the effective aperture value is larger than the proper flash aperture value and is appropriate for steady light. Then, the proper flash aperture is displayed (step F-534), and the process returns.

When it is determined in step (F-531) that the P calculation result is not the P calculation result shift OK, it is determined whether the P calculation result is over the P calculation result (step). F-535). As a result, if the P calculation result is over, the outside light is too bright and the maximum aperture F2
2. Even if the maximum shutter speed is 1/250 seconds, it means that the camera is over and cannot be controlled. Therefore, the over warning mark is blinked at high speed, the execution speed is displayed in blinking (step F-536), and the process is returned. On the other hand, if the P calculation result is not over, it means that the P calculation result non-shift OK, that is, the outside light is appropriate, and therefore the process directly returns.

The P calculation routine and P-LOO described above
The shutter speed, the first value is calculated by the P routine, the flash proper F value calculation routine, and the flash mode S1 time calculation routine.
The aperture value and the second aperture value are determined and variable aperture sync photography is performed so that the background and the main subject are both properly exposed. At this time, the user's intention is respected as much as possible by referring to the input aperture value. Also, in flash photography, the user can select the camera shake limit speed. Further, the distance measured or the set object distance and the input guide number.
By automatically setting the aperture, the proper exposure can be obtained with either auto focus or manual focus. 10-7-9. push_s1 routine (FIG. 51) This routine is a routine executed when the switch S1 is turned on. In this routine, the contents of the stack pointer of the microcomputer are set in the stack pointer of the parent routine, photometry and distance measurement are performed, exposure calculation is performed to obtain the execution speed and execution aperture value, and the variables [exe_
tv] and [exe_av] are set, exposure display and lens drive are performed, and the aperture is driven based on the actual aperture value.
Routine waiting until 2 is ON or S1 is OFF, shut
The ter_drive_and_wind routine is executed (step F-550). If it is the flash mode, the process jumps to the free_s1 routine (steps F-551 and 552). If it is not the flash mode, it is determined whether or not the bracket shift amount set in the variable [np_aeb] is 0 (step F).
-553). As a result, if the bracket shift amount is 0, the process jumps to the free-s1 routine (step F-554). If the bracket shift amount is not 0, the execution speed set in the variable [exe-tv] is TIME.
It is determined whether or not (time exposure of 30 seconds or more) (step F-555).

If the execution speed is not TV_TIME, ie, time exposure, proceed to step (F-557),
The routine that waits until S2 is ON or S1 is OFF is executed, and the execution speed in the variable [exe_tv] is set to the variable [org
_Tv], the execution aperture value in the variable [exe_av] is saved to the variable [org_av], and the variable [exe_
tv] and the execution aperture value is reduced by the bracket shift amount in the variable [inpg_aev], and aeb_execu
te routine is executed. At this time, the execution speed becomes slow. Then, a routine that waits until S2 is ON or S1 is OFF is executed, the execution diaphragm value in the variable [exe_av] is saved to the variable [org_av], and the variable [exe_tv] is saved.
The execution aperture value in is increased by the bracket shift amount in the variable [inpg_aev], and the aeb_execute routine is executed. At this time, the execution speed becomes faster. When the processing of step (F-557) is completed, free_
Jump to s1 routine (step F-558). 10-7-10. convert_to_theory
_Exe_tv Routine (FIG. 52) This routine is a routine for returning the execution speed (exe_tv) to the logical TV (shutter speed). In this routine, from the execution aperture value in the variable [exe_av], a
v_adjust (aperture exposure adjustment value) is obtained, and the value obtained by subtracting 8 from the aperture exposure adjustment value is added to the current execution aperture value in the variable [exe_av] (step F-560). 10-7-11. convert_to_run_ex
e_tv Routine (FIG. 53) This routine is a routine for returning the execution speed (exe_tv) to the corrected second. In this routine, from the execution aperture value in the variable [exe_av], av_adjust
(Aperture exposure adjustment value) is calculated, and the value obtained by subtracting the aperture exposure adjustment value from 8 is added to the current execution aperture value in the variable [exe_av] (step F-565). 10-7-12. aeb_execute routine (FIGS. 54 to 55) This routine is a routine for executing auto bracket shooting. In this routine, it is determined whether or not the execution speed is slower than the maximum speed (shake limit speed) (step F-700). As a result, if it is slower than the camera shake limit speed, it is again determined whether the execution speed is slower than the camera shake limit speed (step F-701). As a result, if it is slower than the camera shake limit speed, it is determined whether or not the execution aperture value is the open aperture value (F2.0) (step F-702). As a result, if the aperture value is wide open, an underexposure warning is issued and free.
Jump to the _s1 routine (step F-703,
704). If it is not the open aperture value, convert-t
The o_theory_exe_tv routine is executed, the execution speed is increased by one half step, the execution aperture value is opened by half step, and the conve
The rt_to_run_exe_tv routine is executed (step F-705), and the process returns to step (F-701). If it is determined in step (F-701) that the execution speed is faster than the camera shake limit speed, it means that control is possible. Therefore, the execution speed is displayed and the aperture is driven to the position of the execution aperture value. And then shutter_drive
Execute the e_and_wind routine (step F
-706), and return.

When it is determined in step (F-701) that the execution speed is faster than the hand-shake limit speed, it is determined whether the execution speed is faster than the fastest second (step F-7).
07). As a result, if it is slower than the fastest second, it is again determined whether the execution speed is faster than the fastest second (step F-708). As a result, if it is faster than the fastest second, it is determined whether or not the execution aperture value is the minimum aperture value (F22) (step F-709). As a result, the minimum aperture value (F2
If it is 2), an overexposure warning is issued and the process jumps to the free_s1 routine (steps F-710 and 71).
1). If it is not the minimum aperture value (F22),
The t_to_theory_exe_tv routine is executed, the execution speed is reduced by half step, the execution aperture value is opened by half step, and co
The nvert_to_run_exe_tv routine is executed (step F-712), and the step (F-70).
Return to 8). If it is determined in step (F-708) that the execution speed is slower than the fastest second, it means that control is possible. Therefore, the execution speed is displayed and the aperture is driven to the position of the execution aperture value. And shutter_dri
The ve_and_wind routine is executed (step F-713), and the process returns. Step (F-707)
When it is judged that the execution speed is slower than the fastest second, it means that the execution speed is appropriate from the beginning, so the execution speed can be changed without changing the execution speed or the execution aperture value. Display and drive the aperture to the position of the actual aperture value, sh
The utter_drive_and_wind routine is executed (step F-714), and the process returns. 10-7-13. shutter-drive-and
-Wind Routine (Fig. 56) This routine is a routine for driving the shutter and film winding during auto bracket shooting. In this routine, the shutter is driven at the execution speed of seconds,
It is determined whether the bracket shift amount in the variable [inp_aeb] is 0 or time exposure (steps F-750 and 751). As a result, if the bracket shift amount is 0 or if it is time exposure, it is further determined whether or not the silent mode is set (step F-
752). As a result, in the silent mode, wait for the switch S1 to be released (step F-75).
3) If the mode is not the silent mode, the diaphragm is immediately driven to the diaphragm dial position (step F-754). Next, in the AF mode, the lens is returned to the initial position and then jumps to the free_s1 routine. In the AF mode, the lens is not returned to the initial position and the free_s1 routine is jumped to (steps F-755 to 757).
If the bracket shift amount is neither 0 nor the time exposure, it is determined whether the back cover is closed (step F).
-758). As a result, if the back cover is closed, after winding the film, it is determined whether or not the back cover is opened (steps F-759 and 760). As a result, if the case back is open, the process jumps to the free_s1 routine (step F-761), and if the case back is closed, the step (F-7).
Proceed to 64). If it is determined in step (F-758) that the case back is open, the bracket shift amount is 0.
If not, it means that the next shooting is continuously performed, so wait 0.5 seconds to prevent the shutter from overheating (steps F-762 and 763), and then step (F-
Proceed to 764). If the bracket shift amount is 0, the process immediately proceeds to step (F-764). Step (F-7
In 64), it is determined whether or not the main dial has changed. As a result, when it has changed, it jumps to the free_s1 routine to cancel the auto bracket operation (step F-765), and when it has not changed, it returns. 10-7-14. Routine for Waiting for S2 to be ON or S1 to be OFF (FIG. 57) This routine is a routine for stopping the shooting of only the first frame or the second frame when the switch S1 is turned off by the auto bracket. However, the exposed frame stops shooting the next frame after shooting. In this routine, it is determined whether the switch S2 is off (step F-770). As a result, if the switch S2 is off, it is determined whether or not the switch S1 is off (step F-771). As a result, if the switch S1 is off, the process jumps to the free_s1 routine (F-772), the shooting of the next frame is stopped by returning to the parent in this free_s1 routine, and if the switch S1 is not on, the step (F Return to -770). In step (F-770), when it is determined that the switch S2 is turned on, the process returns to photograph the next frame with different exposure. 10-7-15. free_s1 routine (FIG. 58) In this routine, the aperture is moved to the set aperture dial position, the lens is moved to the initial position (only in AF mode), and [Parent routine stack pointer register]
The contents of is set in the stack pointer [s] of the microcomputer (F-775), and the process returns. 11. Infrared film shooting Next, the infrared main routine for infrared film shooting,
The release button waiting routine and the lens driving routine will be described.

In these routines, the constants shown in Table 8
Using the variables, infrared focus correction is performed according to the wavelength at which the infrared film has the maximum sensitivity. 11-1. Infrared main routine (FIG. 59) This routine is executed when the infrared mode setting switch 13 is operated. In this routine, the taking lens 1 is moved to the initial position (AF), and the release shutter button waiting routine is executed (steps F-780, 7).
81). Next, in the auto focus (AF) mode, the distance measurement is performed and the distance measurement data is set to the variable [cur_dist].
ance], and the lens driving routine is executed (steps F-782 and 783). Then, the shutter is driven to take a picture, the film winding subroutine is executed (step F-784), and step (F-7).
Return to 81). 11-2. Shutter Button Waiting Routine (FIG. 60) In this routine, the correction amount of the focal length is calculated from the subject distance and the type of infrared film, so the lens drive correction is performed when the subject distance and the infrared film change. .

That is, if the release button 10 is on (step F-790), the process returns without doing anything. If the release button 10 is off, the number of lens drive correction pulses corresponding to the mode (type of infrared film) set by the infrared mode setting switch 13 is set in the variable [new_ir_pulse] (step F-791). ~ 796). Then, the variable [cur_i
r_pulse], variable [new_ir_pulse]
It is determined whether the current number of lens drive correction pulses and the new number of lens drive correction pulses are different,
If they are different, the variable [new_ir_pulses
e] is changed to a new lens drive correction pulse number (steps F-797, 798). If it is the manual focus mode, the lens driving routine is executed (steps F-799 and 800), and the step (F-
Proceed to 801). When the lens drive correction pulse is the same,
If the manual focus mode is not set, the process proceeds to step (F-801) without executing the lens driving routine.

In step (F-801), it is determined whether the set subject distance is different from the current subject distance. If they are different, the set object distance is set as the current object distance. If the autofocus mode is set, the taking lens 1 is moved to the initial position. If the autofocus mode is not set, the lens drive routine is executed ( Steps F-802 to 805), Step (F-79)
Return to 0). If the set subject distance is the same as the current subject distance, step (F-
790). 11-3. Lens Driving Routine (FIG. 61) In this routine, in order to perform infrared focus correction, the number of lens pulses in the variable [lens pulse] and the variable [cur_
The result of addition with the current number of lens pulses in [ir_pulse] is set in a variable [lens pulse], the photographing lens 1 is driven until the set number of lens pulses is reached (step F-810), and the process returns.

As described above, when the type of the infrared film is changed after the manual mode is set, the infrared focus correction is surely performed by refocusing.
The infrared mode cannot be set when a film is not loaded. Also, when opening the back cover 24 or when rewinding is completed, the cartridge 1
The infrared mode is set to be cleared when it is determined that the shooting for the main line is completed. 12. Communication Function Next, the communication function between this camera and an external device such as a personal computer will be described. 12-1. Communication circuit Communication with an external device is performed via a thyristor SCR for controlling light emission of the flash circuit 92, an X contact 21, a contact 22 for receiving a charging completion signal, and an RS232C. In this case, the transmission signal from the inside of the camera to the external device is given to the gate terminal of the thyristor SCR for controlling light emission in the flash circuit 92. However, once the thyristor SCR is turned on, it is not turned off even if the signal to the gate terminal becomes "0 (L)", and the on / off state signal of the thyristor SCR is output as it is to the external device as a transmission signal. You cannot do it. Therefore, the adapter AD shown in FIG.
With P, the content of the transmission signal given to the gate terminal of the thyristor SCR is determined.

As shown in FIG. 62, the adapter ADP includes a PNP type transistor Tr, two AND gates A
ND1, AND2, two flip-flops FF1, F
F2, NOR gate NOR, oscillation circuit F, and level conversion circuit C. PNP in adapter ADP
The collector terminal of the type transistor Tr is connected to the anode terminal of the thyristor SCR in the flash circuit 92, as shown in FIG. In such a connection, the anode current of the thyristor SCR can be cut by turning off the PNP transistor Tr, and the thyristor SCR in the on state can be turned off. And
When the PNP transistor Tr is turned on while the thyristor SCR is off, the thyristor SCR is turned on when the transmission signal given to the gate terminal of the thyristor SCR is "H", and the transmission given to the gate terminal is transmitted. When the signal is "L", the thyristor SCR does not turn on but remains off.

By utilizing such a principle, the content of the transmission signal given to the gate terminal of the thyristor SCR is detected by turning on / off the PNP transistor Tr. At this time, ON / OFF control of the PNP transistor Tr is performed by the AND gate AND1 and the flip-flop FF1. The output of the detected transmission signal is NOR gate NOR, AND gate AND2,
This is performed by the flip-flop FF2 and the level conversion circuit C. In this case, the flip-flops FF1 and FF
2 inputs and outputs signals based on the clock signal CLK from the oscillation circuit F. The reception from the external device is performed via the level conversion circuit C and the contact 22 for receiving the charging completion signal. 12-2. External Communication Timing Chart Next, the transmission operation will be described based on the time chart of FIG.

Now, in the period T1, the thyristor SCR
[H] transmission signal G is applied to the gate terminal of
The type transistor Tr has a base voltage A and an emitter voltage B.
Both are "L" and are turned on, which causes thyristor S
It is assumed that CR is also turned on. At this time,

As described above, when the thyristor SCR is on, the PNP transistor Tr is turned off and then turned on again. That is, in the next period T2, the oscillation circuit F
From the clock CLK from the output "H" of the AND gate AND1 in the previous period T1.
To the base voltage A of the PNP transistor Tr.
Is output, the PNP transistor Tr is turned off. As a result, the thyristor SCR is turned off and P
The emitter voltage B of the NP type transistor Tr becomes "H". At this time, the output of the AND gate AD1 becomes "L".

In the next period T3, the output "L" of the AND gate AND1 in the period T2 is input to the flip-flop FF1 and is output as the base voltage A of the PNP transistor Tr. A bias voltage is applied so that the device can be turned on. On the other hand, the transmission signal G at the gate terminal of the thyristor SCR is "H". Therefore, both the PNP type transistor Tr and the thyristor SCR are turned on, and the PN
The emitter voltage B of the P-type transistor Tr becomes "L". At this time, the output of the AND gate AD1 becomes "H".

As described above, when the thyristor SCR is off, the PNP transistor Tr is turned on. As a result, if the thyristor SCR is turned on, it is given to the gate terminal of the thyristor SCR. It can be seen that the transmission signal G is "H".

Next, in order to continue monitoring the transmission signal G applied to the gate terminal of the thyristor SCR, P
Repeatedly turning off / on the NP-type transistor Tr. That is, in the next period T4, when the output “H” of the AND gate AND1 in the previous period T3 is input to the flip-flop FF1, P is similar to that in the period T2.
Both the NP type transistor Tr and the thyristor SCR are turned off, the emitter voltage B of the PNP type transistor Tr becomes "H", and the output of the AND gate AND1 becomes "L".

Next, in the period T5, the output "L" of the AND gate AND1 in the period T4 is the flip-flop F.
Since it is input to F1 and output as the base voltage A of the PNP transistor Tr, the PNP transistor Tr is
Is turned on, but the transmission signal G at the gate terminal of the thyristor SCR is "L". Therefore, PNP
Both the type transistor Tr and the thyristor SCR remain off. That is, when the thyristor SCR is turned off, the PNP transistor Tr is turned on. As a result, if the thyristor SCR does not turn on, the transmission signal G applied to the gate terminal of the thyristor SCR. Is "L".

In this way, after it is found that the transmission signal G given to the gate terminal of the thyristor SCR is "L", the PNP transistor Tr remains in the ON-enabled state. Therefore, after that, when the transmission signal G given to the gate terminal of the thyristor SCR becomes "H", both the thyristor SCR and the PNP transistor Tr are turned on. Then, the above operation is repeated.

[0107] The transmitted signal G is inverted and is transmitted to the external device. This As shown in the figure, it becomes "H" momentarily while repeating, and at this moment, the transmission signal G given to the gate terminal of the thyristor SCR is not inverted. That is, a moment occurs in which the transmission signal G given to the gate terminal of the thyristor SCR is not faithfully reflected. However, during this "H" period, the clock C
Since the input to the flip-flop FF2 by LK is not performed, Therefore, the transmission signal G given to is faithfully reflected, and erroneous transmission is avoided.

[0108] Then, the level is converted by the level conversion circuit C and transmitted. In addition, the transmission rate is 240 in consideration of RS232C.
0 bps (416.67 μsec), the start bit is “0”, and the stop bit is “1”. 12-3.1 Byte Transmission Routine (FIG. 65) When the microcomputer 80 transmits a signal (information) in which the number of bits in one word is 1 byte, the microcomputer 80 performs the following control for each byte.

That is, the variable [FTRG] for the transmission signal
Start bit “0”, bits 0, 1, 2, 3, 4,
The contents of 5, 6, and 7 and the stop bit “1” are set to 41
Set sequentially at 6.67 μsec intervals (F-27
0), return. 12-4.1 Byte Reception Routine (FIG. 66) When the microcomputer 80 receives a signal (information) in which the number of bits in one word is 1 byte, the microcomputer 80 performs the following control for each byte. That is, it waits for the start bit "0" to be set in the variable [FFUL] for the received signal (steps F-280 and 281). And
The start bit "0" is a variable for the received signal [FFU
L], wait for 208.335 msec,
After that, the contents sequentially received at 416.67 μsec intervals and set in the variable [FFUL] are set to bits 0, 1, 2, 3, 4, 5, 6, 7 of one word, respectively.
Are sequentially set as the bit information (step F-28).
2). Then, it is determined whether or not the stop bit "1" is received. If the stop bit "1" is not received, error processing is performed and the process returns. If the stop bit "1" is received, , And returns without performing error processing (steps F-283 and 284).

Such a communication function can be utilized when testing the operation of the camera. That is, information such as the current number of shots in the EEPROM 88, the current winding mode, the current SSP position, etc. to the external personal computer, distance measurement data,
By transmitting the photometric data and the like, it is possible to easily investigate the cause when the camera malfunctions. Also, by sending camera operation signals such as various mode signals from an external PC to the camera, you can quickly set the camera operating conditions without operating various operation buttons, etc. You can improve. 13. Film feeding flow Next, the film winding subroutine and the film rewinding subroutine will be described. In these routines, the film feeding control is performed to realize the film leading edge leaving function, the film rewinding temporary stop function, the silent (reduces the film feeding sound) function, and the two-frame feeding function. Figure 6
7 and FIG. 68 show constants and variables used in these routines. For example, the variable [silent re-challenge flag] is set to the first time and the second time. When the first time is set, try driving at a low voltage so that the film feeding sound is still low. When the second time is set, it means that a low voltage driving is attempted so that the film feeding sound becomes low. In addition,
When the film is stretched and the film cannot be wound up by driving at a low voltage, the film is wound up at a normal voltage (2
(Including the return route when feeding pieces). The details will be described in the flow. Further, in addition to the items shown in the table, a timer overflow flag is used. This timer overflow flag is set by hardware when the film is stretched and the timer overflows during film feeding. 13-1. Film winding subroutine (Figs. 69 to 7)
1) After performing the exposure operation, the microcomputer 80 controls the film feeding motor MF as follows to wind the film.

First, in order to return to the parent routine after executing the film winding subroutine, the contents of the stack pointer of the microcomputer 80 in the variable [s] are stored in the variable [stack pointer of the parent routine] and the variable [silent Re-challenging flag] is set to the first time to initialize the flag (step F-1). And the back cover 2
4 is open (step F-2), and if the back cover 24 is open, the process returns without doing anything. On the other hand, if it is closed, it is determined whether or not it is in the auto bracket (AEB) mode in which the exposure is automatically changed to continuously shoot a plurality of frames (step F-3). As a result, if it is not the auto bracket mode, the content of the variable [current number of shots] is stored in the variable [a] and displayed on the display panel 19 (step F-4), and the process proceeds to step (F-5).
In the auto bracket mode, the shutter speed is displayed on the display panel 19 as described above.
-4) is skipped and the process proceeds to step (F-5).

In step (F-5), it is determined whether or not the content of the variable [current number of shots] is "0". As a result, if the content of [current number of shots] is "0", it means that the autoloading has not been performed yet. Therefore, in the routine of steps (F-6) to (F-20), the autoloading is performed. And then return. Step (F-
If the content of the variable [current number of shots] in 5) is not “0”, it means that the film that has already been auto-loaded is loaded, and therefore the step (F-21) is performed without auto-loading. move on.

Autoloading is performed as follows. That is, the variable [current winding mode] is set to the non-DX autoload mode (step F-6) for the time being (the mode in which the timer time for detecting the tension in film feeding is set to be the shortest). Then, in order to recognize whether or not a film is loaded, the following processing is performed. That is, it is determined whether or not the code read by the DX code reading circuit 83 is a non-DX code (step F-7). As a result, DX rather than non-DX code
If it is a code, it means that the DX film is loaded, so the one frame mode winding is set as the variable [current winding mode] (step F-8) and the motor forward rotation start routine is executed (step F-9). D
If the X code is not read, it means that the non-DX film is loaded or the film is not loaded.
The motor forward rotation start routine of step (F-9) is executed without setting the frame mode winding. In this case, whether or not the film is in the exposure frame can be determined based on whether or not the SSP signal is output when the motor forward rotation start routine is executed.

Next, it is judged whether or not the SSP signal corresponding to one set of "H" level and "L" level is "H" level (step F-10). As a result, SS
If the P signal is at "H" level, the L-wait routine of the SSP signal is executed, and then the one frame mode winding is set as the variable [current winding mode] (step F-1).
1). If the SSP signal is at the “L” level, after executing the H waiting routine for the SSP signal, the one frame mode winding is set as the variable [current winding mode], and further,
In order to keep pace with step (F-12), an L waiting routine for the SSP signal is executed (step F-12). That is, by such a process, the SS is not affected by the positional relationship between the film and the sprocket when the film is loaded.
It is possible to unify the P signal so that it is "H" at the middle part of one frame and "L" at the end part (the part between the frames) of one frame. This unification enables accurate management of the number of shots.

Next, after the routine for waiting for the HSP signal to change in the SSP during forward rotation is executed three times, the motor forward rotation stop routine is executed to wind up three frames for automatic loading.
Set "0" to the variable [AEB step] and 700m
After waiting for sec, the DX code of the film is read after the posture of the film is stabilized and is set to the variable [a] (step F-13). And the content of the variable "a" is non-DX
Or not (step F-14). As a result, if it is non-DX, "ISO ---" is displayed on the display panel.
Is displayed for 0.8 seconds, and a variable [current ISO sensitivity] is set to a predetermined non-DXISO sensitivity, for example, ISO100 (step F-15), and the process proceeds to step (F-17). On the other hand, if it is a DX code, the DX code in the variable [a] is set to [current ISO sensitivity] (step F-
18) and proceeds to step (F-17). Step (F-
In 17), "IR550" of a normal film is set for the time being as the variable [infrared film type], the content of the variable [current ISO speed] is written in the EEPROM 88, and the result is displayed on the display panel for 0.8 seconds.

Next, it is judged whether or not the two-piece mode switch (rewindless switch 98) is turned on (step F-18), and if the two-piece mode switch is turned on, the variable [current winding mode] is set. The forward path for 2 frames is set (step F-19), and the process proceeds to step (F-20). On the other hand, if the 2-piece mode switch is off,
The variable [current winding mode] is not set to the forward path for 2 frames, and the process proceeds to step (F-20). Step (F-2
In 0), the variable [current SSP position] to be counted corresponding to the amount of film pulled out is set to "0", the variable [current number of shots] is set to "1", and the EEPROM 88
The automatic loading is completed by executing a recording routine for recording various data and returning. As described above, since the state of the 2-frame mode switch is read during autoloading and stored in the EEPROM 88, even if the battery is removed during shooting or the 2-frame mode switch is broken, the 2-frame mode (rewind It is possible to avoid double exposure by (less mode) shooting, that is, double shooting for one frame.

If it is determined in step (F-5) that the content of the variable [current number of shots] is not "0" and autoloading has already been performed, the variable [WMODE]
Is set to the content of the variable [current winding mode] (step F-21), and it is determined whether the content of the variable [WMODE] is one frame mode winding (step F-2).
2). As a result, if it is the one-frame mode winding, the motor forward rotation start routine, the SSP H-L change waiting routine at the time of forward rotation, and the motor forward rotation stop routine are sequentially executed to wind one frame (step F-23). , Step (F-24)
Proceed to. When it is not the one-frame mode winding, step (F-23) is skipped and the process proceeds to step (F-24). In step (F-24), it is determined whether or not the content of the variable [WMODE] is the outward path for two frames. As a result, if it is the outward path for two frames, it is further determined whether or not the content of the variable [current number of shots] is 18, that is, whether or not it is the turnback position (step F-25). This decision is
It is assumed that the current maximum number of frames of 36 shots of film will be used. In other words, immediately after the 36th frame is shot,
Motor forward rotation start routine, forward rotation SSP H in order to wind up and fold back one frame without looking at the film tension
~ L change waiting routine and motor forward rotation stop routine are sequentially executed, the return path at the time of two frames is set in the variable [current winding mode] (step F-26), and step (F-2)
Proceed to 8). On the other hand, if it is not immediately after the 36th frame is photographed, the motor forward rotation start routine is performed once, and the forward rotation SSP H
~ L change waiting routine is executed twice, motor forward rotation stop routine is executed once, that is, two frames are wound up, and the process proceeds to step (F-28).

When it is determined in step (F-24) that the route is not the two-frame forward route, steps (F-25) to (F-27) are skipped and the process immediately goes to step (F-28). move on. In step (F-28), it is determined whether or not the content of the variable [WMODE] is the return path for two frames. As a result, if it is not the return path for two frames, the process proceeds to step (F-32). On the other hand, if it is a return path for two frames, it is further determined whether or not the content of the variable [current SSP position] is “2”, that is, whether or not the shooting of the last frame in the shooting of two frames is completed. If (step F-29), the shooting of the last frame in the two frame shooting is completed, the process jumps to the routine for returning to the parent after rewinding (step F-29).
-30).

On the other hand, if the shooting of the last frame has not been completed at the time of shooting two frames, the variable [a] is set to 0, and the motor reverse rotation start routine and the SSP H-L change waiting routine at reverse rotation are repeated three times. Motor forward rotation start routine, normal rotation SS
By sequentially executing the PH to L change waiting routine and the motor forward rotation stop routine, that is, by rewinding three frames and winding one frame, two frames are rewound (step F-31), and the step ( F-32) Proceed. 3
The frame is rewound by one frame and is wound by one frame, so that the direction in which the overrun occurs is made constant so that the space between the exposed frames is surely vacated. In step (F-32), it is determined whether or not the content of the variable [current number of shots] is the maximum 99 that can be displayed on the display panel. As a result, 99
If not, the content of the variable [current number of shots] is incremented by 1 (step F-33), and the EEPROM
88 executes a recording routine for recording various data (step F
-34), jump to the routine for returning to the parent routine (step F-35). If the current number of shots is 99, the step (F-3
Proceed to 4).

Since the increment processing of the content of the variable [current number of shots] in step (F-33) is executed regardless of the mode, shots are taken every other frame.
Even in the frame mode (both reciprocating), the actual number of captured frames is displayed instead of the physical frame position, so that the user can easily recognize the number of remaining frames that can be captured. 13-2. Film rewind subroutine (Fig. 72) In the film rewind subroutine, the contents of the stack pointer of the microcomputer 80 in the variable [s] are changed to the variable [stack pointer of parent routine in order to return to the parent routine after executing this subroutine. ] In step S51 (step F-51). Then, the process returns to the routine for returning to the parent after rewinding (step F-52).

Next, each routine called in the film winding subroutine and the film rewinding subroutine will be described.

14-1-2. Routine for returning to the parent after rewinding (Fig. 73) This routine is used when the film is stretched when winding one frame, when the last frame has been shot when winding two frames, and when the midway rewind button 18 is operated. And so on. In this routine, first, the number of shots is displayed in blinking, the variable [silent re-challenge flag] is set to the first time, the flag is initialized, and the variable [current winding mode] is set to rewinding, and rewinding is in progress. A variety of data recording routines are executed in the EEPROM 88 so that the current state can be restored even if the battery is removed. Then, for the next film to be loaded, the non-DXISO sensitivity is set to the variable [current I
SO sensitivity] and record it in the EEPROM 88.
After waiting for a second, the power switch cancel check routine is executed, the variable [a] is set to 50 msec, and the motor reverse rotation start routine is executed (step F-61). The motor is driven at high speed by setting the variable [a] to 50 msec. This high speed driving is performed to prevent the gears from meshing when the film is stretched. Also, after waiting for 3 seconds, the power switch cancel check routine is executed, thereby waiting for 3 seconds before starting auto-rewind, checking whether or not the power is turned off, and temporarily rewinding is stopped when the power is turned off. I am trying. Even if you rewind at a low speed, some sound is unavoidable, so in silent mode, by blinking the number of shots and informing the user that all the frames have been shot, wait for a while. ,
The rewind may be performed later. Next, it is determined whether or not the [current number of shots] is 0 in order to determine whether or not this routine is called while the frame is being rewound to the position immediately before the end of rewinding ( Step F-6
2) If the number of shots is not 0 and it is not immediately before the end of rewinding, it is further determined whether [current SSP position] is an odd number (step F-63). Since it is stopped at the part, the number of shots cannot be accurately counted. Therefore, the L wait routine of the SSP signal is executed to accurately count the number of shots, and the [Current SS
P position] is decremented by 1 (step F-6
4). And decremented [current SSP position]
Is divided by 2 and added to one, that is, the physical position of the frame (the number of frames corresponding to the amount of film drawn from the cartridge) is set in the variable [current number of shots] and displayed on the display panel 19 ( Step F-65).

In this way, at the time of film rewinding, the position of the physical frame is displayed as a variable [current number of shots], including the case where the midway rewind button 18 is operated in the middle of the forward path for two frames. The user can easily recognize where the current rewinding position is while rewinding is being performed.

When it is determined in step (F-63) that the current SSP position is not an odd number, that is, an even number, it is stopped at the portion between the frames and the number of shots is counted as it is. Can be performed accurately, so the step (F-
In step 65), the number of shots is calculated and displayed.

After displaying the current number of shots, it is judged whether or not the [current SSP position] is "0" (step F-66). ~ L
By executing the change waiting routine, the power switch cancel check routine (step F-67), and returning to step (F-65), the rewind operation is performed until the [current SSP position] becomes "0". continue. On the other hand, if the [current SSP position] is "0", the process proceeds to step (F-68) to execute the SSP signal H waiting routine and the SSP signal L waiting routine alternately four times each. , Rewind one extra frame from the three offloaded frames, set the variable [current winding mode] to just before the end of the rewind, set the current number of shots to "0", and display "---" on the display panel. Execute a routine that brakes the motor for 50 msec and stops it, and waits for 1 second. That is,
Wait for 1 second with the so-called film tip left. And
Execute the power switch cancel check routine, then execute the routine to check the opening of the back cover, and set variable [a] to 0.
Is set, and the motor reverse rotation start routine is executed.

As described above, while waiting for 1 second while leaving the film tip slightly from the cartridge, the back cover 2
By opening 4, the cartridge can be taken out from the camera body with the tongue left. Further, as will be described in detail later, by executing the power switch cancel check routine, when the rewinding noise is noisy, the power can be turned off during the rewinding to stop the rewinding operation.

Next, the SSP signal H wait routine and [S
Rewinding is restarted by repeatedly executing the SP signal] L waiting routine (step F-69). When it is determined in step (F-62) that the current number of shots is 0, the variable [current winding mode] is set to just before the end of rewinding, and [-] is displayed on the display panel 19. (Step F-70) The process proceeds to step (F-69) to repeatedly execute the SSP signal H wait routine and the SSP signal L wait routine. Therefore, if the back cover 24 is not opened while waiting for the above 1 second, the cartridge can be taken out from the camera body while the film front end is accommodated in the cartridge. 13-3. SSP signal H waiting routine (FIG. 74) In this routine, the abort time (S
Time to wait for SP signal output: If there is no SSP signal output within this time, [Timer overflow flag]
Is set and it is considered that the film is stretched), the abort timer set routine is executed (step F-75), and it is determined whether the [timer overflow flag] is set, that is, whether the film is stretched. It is determined (step F-76). as a result,
When the [Timer Overflow Flag] is set and the film is stretched, the timer-abode execution routine is executed to control the film feeding according to the contents of the current winding mode and the presence or absence of the silent mode setting ( In step F-77), a routine for checking the opening of the back cover is executed (step F-78). When the [Timer overflow flag] is reset and the film is not stretched, the routine for checking the back cover opening is executed immediately. Next, it is determined whether the [SSP signal] is H (step F-79), and if the [SSP signal] is H, the process returns. If the [SSP signal] is L, by returning to step (F-76), [SSP signal]
The same processing is repeated until the signal] becomes H. 13-4. SSP signal L wait routine (FIG. 75) This routine basically performs the same processing as the SSP signal H wait routine. That is, the abort timer set routine is executed (step F-85), and it is determined whether or not the [timer overflow flag] is set, that is, whether or not the film is stretched (step F-86). As a result, when the [Timer overflow flag] is set and the film is stretched,
Execute the timer-abort execution routine (step F-
87), a routine for checking the opening of the back cover is executed (step F-88). When the [Timer overflow flag] is reset and the film is not stretched, the routine for checking the back cover opening is executed immediately.
Next, it is determined whether the [SSP signal] is L (step F-79), and if the [SSP signal] is L, the process returns. If [SSP signal] is H, step (F-8
By returning to 6), the same processing is repeated until the [SSP signal] becomes L. 13-5. Rout waiting routine for SSP signal H to L during forward rotation (Fig. 76) In this routine, the SSP signal H waiting routine is executed to increase the current SSP position by one, and the SSP signal L waiting routine is executed. 1 is added to the SSP position of (step F-95), and the process returns.

Routine waiting routine for SSP signal H to L during reverse rotation (FIG. 77) In this routine, the SSP signal H waiting routine is executed to decrement the current SSP position by -1, and the SSP signal L
Execute the wait routine to set the current SSP position to -1
Then (step F-100), the process returns.

Power Switch Cancel Check Routine (FIG. 78) This routine is called by the routine that returns to the parent after rewinding, checks the power off when rewinding, and stops the rewind operation when the power is turned off. ing.

That is, it is judged whether or not rewinding is set in the variable [current winding mode] (step F-105), and if rewinding is not set, the routine returns. If "rewinding" is set, it is determined whether the power-off rewinding flag is set (step F-106). As a result, power off
If the medium rewind flag is set, it is further determined whether or not the position of the power switch (main dial 9) is OFF (step F-107). If the position of the power switch is not OFF, the power is turned off. The rewind flag during OFF is reset (step F-108), and the process returns. If the position of the power switch is OFF, the process directly returns. Power off at step (F-106)
If it is determined that the middle rewind flag is reset, then it is determined whether the position of the power switch is OFF (step F-109). If the position of the power switch is not OFF, the process returns. On the other hand, if the position of the power switch is OFF, a routine for braking the motor for 50 msec to stop and a routine for recording various data in the E2 PROM 88 are executed (step F-11).
0), S1 or jump to the back lid open waiting routine (step F-111). In this way, by jumping to S1 or the back lid open waiting routine, after the rewinding is stopped, the processing corresponding to the operation of the switch S1 or the opening operation of the back lid 24 is executed. 13-6. Routine for checking back cover open (Fig. 79) This routine is called from the SSP signal H wait and L wait routines, etc., and periodically checks the open / close state of the back cover 24 during the film feeding process to When 24 is opened, the film feeding is stopped and predetermined initialization is performed.

That is, it is judged whether or not the back cover is open (step F-115), and if the back cover 24 is open,
Wait 40 msec in consideration of chattering (Step F
-116), and again it is determined whether or not the back cover 24 is opened (step F-117). As a result, if the back cover 24 is opened, a routine for braking the motor for 50 msec and stopping is executed, 0 is set in the variable [AEB step], and IR50 is set in the variable [infrared film type] (step. F-118). Then, it is determined whether or not the current lens position is the AF position (initial position) (step F-119). If it is not the initial position, the variable [current lens position] is set to the initial position and the photographing lens is set. Move to the initial position (step F-120).

Next, the non-DXISO sensitivity is set to a variable [current I
[SO sensitivity] to record in the EEPROM 88, reset the rewind flag during power OFF, set the current number of shots to 0, set the variable [current winding mode] to the non-DX auto load mode, and set various data in the EEPROM 88. Recording routine is executed (step F-12
1) Jump to the routine that returns to the parent routine (step F-122). On the other hand, if it is the initial position, skip step (F-120) and step (F-121).
Proceed to. When it is determined in steps (F-115) and (F-117) that the back cover 24 is closed, the process returns. 13-7. Routine for stopping the motor by braking for 50 msec (Fig. 80) This routine is called from the routine for returning to the parent after rewinding, the power switch cancel check routine, etc., and the film feed motor MF is braked for 50 m.
After waiting for sec, the film feeding motor MF is stopped (step F-125) and the process returns. 13-8. Abort timer set routine (Fig. 81) This routine is called from the SSP signal H wait and L wait routines, and sets the abort time according to the contents of the current winding mode and the silent mode set / reset.

That is, the content of the variable [current winding mode] is set in the variable [a], and the set content and the constant "03" defined as the Abode time table mask are set.
And the logical product is set to the variable [x] (step F-130). In this case, as shown in the table, the contents of [current winding mode] are 00H for non-DX auto load mode, 11H for 1 frame mode winding, and 2 for 2 frame winding mode.
The forward route at the time of a frame is 21H, the backward route at the time of a frame is 32H, 42H immediately before the end of rewinding, 53H during the rewinding, and the aboard timetable mask is 03H, so the logical product is 10 It will be one of the decimal numbers 0, 1, 2, and 3.

Next, it is determined whether or not the silent mode flag is set (step F-131), and when it is reset, it is indicated by the th noise mode aboard time table corresponding to the above logical product. Set the aboard time to the variable [a] (step F-13).
2). For example, when the one-frame mode is the winding mode and the silent mode is not set, the logical product becomes "1", so that 1000 / T50mse set in [Noise mode abort time table, first] shown in Table 8 is set.
c, that is, 20 msec is set.

On the other hand, when the silent mode flag is set, the abort time shown in the mute mode aboard time table corresponding to the above logical product is set in the variable [a] (step F-133). . For example, when the one frame mode winding mode and the silent mode are set, the logical product becomes "1", so 900 / T50 msec set to [silence mode abort time table, first] shown in Table 8 is set to 18 mse.
Set c. Then, the aboard time, which is the content of the variable [a], is set in the hardware timer in units of 50 msec (step F-134), and the process returns. 13-9. Routine for recording various data in EEPROM (FIG. 82) This routine is a routine for returning to the original state after loading the battery even if the battery is removed during the film feeding. The current winding mode and the current SSP position are recorded in the E2 PROM 88 (step F-140), and the process returns. 13-10. Motor forward rotation start routine (FIG. 83) This routine is called in the film winding subroutine. In this routine, it is judged whether or not the silent mode flag is set (step F-1).
45) If it is set, the motor is rotated in the low speed forward direction (step F-146) and the process returns. That is, the noise during the winding drive is reduced by performing the winding at low speed.

On the other hand, if the silent mode flag is reset, it is judged whether or not the winding mode is currently the non-DX auto load mode (step F-14).
7) If it is not the non-DX auto load mode, the motor is rotated forward at high speed for 50 msec (step F-148) in order to wind the wire faster so that the speed is initially high.
In the auto load mode, the motor is rotated at the normal speed (step F-149) and the process returns. 13-11. Motor reverse rotation start routine (FIG. 84) This routine is called in the film winding subroutine and the routine for returning to the parent after rewinding. The reason why this motor reverse rotation start routine is called also in the film winding sub-routine is that the film needs to be fed in the rewinding direction on the return path at the time of two frames even if it is substantially winding.

In this routine, it is judged whether or not the silent mode flag is set (step F-1).
55), if set, it is determined whether the content of the variable [a] is "0" (step F-15).
6). As a result, when the content of the variable [a] is not "0", the content of the variable [a] (5
0 msec, see step (F-61) in FIG. 57) X1
The motor performs high-speed reverse rotation for msec, that is, 50 msec (step F-157), performs low-speed motor reverse rotation (step F-158), and returns. On the other hand, when the content of the change [a] is "0", the process proceeds to step (F-158) without performing the motor high speed reverse rotation, and the motor low speed reverse rotation is performed. If it is determined in step (F-155) that the silent mode flag has been reset, the motor middle speed reverse rotation is performed after performing the motor high speed reverse rotation for 50 msec to apply the reverse rotation brake (step F-
159), and returns. In this way, the film is fed while reducing the noise even when the film is rewound. The high speed reverse rotation is performed as described above because a large torque is required when switching to the reverse rotation due to gear switching and the like. 13-12. Motor forward rotation stop routine (FIG. 85) In this routine, it is determined whether or not the silent mode flag is set (step F-160). When the silent mode flag is reset, the motor is reversely braked to be applied. Is reversed at medium speed (step F-161). At this time, the time to apply the reverse brake is changed according to the set current temperature. That is, if the set current temperature is COLD, NOR is performed for 12 seconds.
15 seconds for MAL, 15 seconds for WARM,
18 seconds for HOT (steps F-162 to 16
9). The reason why the reverse braking time is changed according to the temperature is that the amount of overrun changes depending on the temperature. On the other hand, when the silent mode flag is set, it waits for the shortest 8 seconds (step F-170). Then, a routine for stopping the motor by braking it for 50 msec is executed (step F-17).
1) Return. 13-13.2 Routine to return to parent and return (Fig. 86)
~ 87) This routine is called by the timer abort execution routine described later when the film is stretched by two frames and stretched, and the frame switching position (the frame of the previous shooting is always taken, no matter which position you stretch. Processing to return to the position). That is, the current winding mode is set to the return path for the second frame, and the silent re-challenge flag is set to the first time (step F-175). Next, it is judged whether or not the current SSP position is less than 4, that is, less than 2 frames (step F-17).
6) If there are less than two frames, jump to a routine for returning to the parent after rewinding (step F-177).

On the other hand, if the current SSP position is two or more frames, the variable [a] is set to "50" to rotate at a slightly higher speed, the motor reverse rotation start routine is executed, and then the variable [a] is set to the current value. Set SSP position of this current SS
The current SS is obtained by taking the logical product of the P position and "3".
The remainder obtained by dividing the P position by "4" is obtained, and this remainder is set in the variable [a] (step F-178). 4
Since one SSP position corresponds to one frame, the current S
Remainder of SP position divided by "4""0","1",
"2" and "3" are the edge of the piece, 1/4, 1/2,
It means that it was stretched at the position of 1/3.

Therefore, in order to return to the previous photographing frame position, in step (F-179 to 186), rewinding is performed by an amount corresponding to the excess. That is, if the remainder is 3, then SS
The P signal L wait routine, the SSP signal H wait routine, the SSP signal L wait routine, and the SSP signal H wait routine are sequentially executed to rewind two frames. When the remainder is 2, the SSP signal H waiting routine, the SSP signal L waiting routine, and the SSP signal H waiting routine are sequentially executed to rewind one frame and a half. If the remainder is 1, S
The SP signal L waiting routine and the SSP signal H waiting routine are sequentially executed to rewind one frame. If the remainder is 0, only the H waiting routine of the SSP signal is executed to rewind by half a frame. Each time these routines are executed, that is, each time the frame is rewound by half a frame, the current SSP position is decremented by one.

As described above, no matter which position the image is stretched, by always returning to the previous photographing frame position, that is, the frame switching position, double exposure for photographing two frames every other frame (double exposure for one frame is performed). Can be prevented).

Next, the L-wait routine for the SSP signal and the H-L change wait routine for the SSP during reverse rotation are executed to rewind one frame and a half, the motor forward rotation start routine, and the HSP for forward rotation SSP.
~ By executing the L change waiting routine and the motor forward rotation stop routine to wind up half frames, the shooting frame position is set to the left of the previous shooting frame position, and the current number of shots is increased by 1
Then, a routine for recording various data in the EEPROM 88 is executed (step F-187), and the routine returns to the parent routine (step F-188).

As described above, even if the current number of shots is increased by 1 even on the return path of two-frame winding, the return path of two-frame winding, that is, even when shooting after every turn when shooting every other frame, This means that the actual number of shots is displayed as in the case of shooting frames one by one. 13-14. Rewinding routine after displaying the number of frames (FIG. 88) This routine is called in S1 or the back lid open waiting routine described later. In this routine, the number of shots is displayed in blinking (step F-190). If the position of the power switch is OFF, the rewind flag is set while the power is OFF, and the process jumps to the routine for returning to the parent after rewinding,
If the position of the power switch is not OFF, the process immediately jumps back to the routine for returning to the parent (step F-1).
91-193). 13-15. Timer abode execution routine (Fig. 89-
90) This routine is executed when the film is stretched. In this routine, if it is found that the timer aboard flag has been set and the film has stretched, the silent re-challenge flag is the first time, and if the winding mode is currently rewinding, the silent mode flag is reset. Then, the silent mode is released (steps F-195 to 198), and the retard is performed via step (F-199). That is, when the film is stretched during rewinding, the silent mode is canceled without executing. On the other hand, when the winding mode is not currently being rewound, the silent mode is not canceled and the process proceeds to step (F-199).

In step (F-199), it is determined whether or not the current winding mode is one-frame mode winding, which is the forward path or the backward path for two frames. As a result, if it is either one-frame mode winding, two-frame forward or return,
In order to raise the motor voltage and try again, set the silent re-challenge flag for the second time, execute the abort timer set routine, and raise the motor voltage (step F-
200) and returns. That is, when it is not possible to wind at low speed (the return path at the time of two frames is also an aspect of winding), the winding is automatically changed to high speed winding. On the other hand, if the current winding mode is neither the one-frame mode winding nor the two-frame forward and return paths, step (F-
Proceed to 207).

When the silent re-challenge flag is the second time,
That is, when the film is stretched even when the film is fed at a high speed, the motor is turned off, the current winding mode is saved in the variable “a”, and the current winding mode is set to 2
It is judged whether or not it is the outward route of the piece time (step F-20).
1, 202). As a result, if it is the outward route for two frames, it returns to the routine for two frames and jumps to the routine for returning to the parent (step F-203). If it is not the outward route for two frames but the return route for two frames, the process jumps to S1 or the back cover open waiting routine (steps F-204 and 205). If it is neither the forward path for 2 frames or the return path for 2 frames, execute the power switch cancel check routine (step F-206),
Go to step (F-207). In addition, step (F-
When it is determined in 195) that the silent mode is reset, the process proceeds to step (F-207) without passing through steps (F-196 to 206).

In step (F-207), since the usual winding-up abort with a large operating noise has been performed so far, a routine for stopping the motor by braking for 50 msec is executed. Then, if the winding mode is currently the outward path of two frames, the routine returns to the routine of returning two frames and returns to the parent (steps F-208 and 209). If the mode is the non-DX autoload mode, the routine returns to the parent. It jumps (steps F-210 and 211) and is in the one-frame mode winding mode, and if the current number of shots is not 0, it jumps to a routine for returning to the parent after rewinding (steps F-212 to 214). In addition, DX film auto load failure, auto rewind error, error after non-DX film is loaded and SSP signal comes more than once,
In the case of either the manual rewind error or the rewinding at the silent time, the process jumps to S1 or the back cover open waiting routine (steps F-215 and 216). 13-16. S1 or back lid open waiting routine (Figs. 91 to 9)
3) In this routine, first, the contents of the stack pointer of the parent routine are set in the variable [s], the winding mode is set to rewinding at present, the liquid crystal blinking counter is set to "0", and the power switch (main dial 9) is set. Initialization such as reading the position is performed (step F-220). Then, if the position of the power switch is OFF, after resetting the silent mode flag (steps F-221, 22).
2) If the position of the power switch is not OFF, the current number of shots is displayed and EEPRO is displayed without performing the above reset.
A recording routine for recording various data in M88 is executed (step F-223).

Next, if the current number of shots is "0",
Since this means an error after the rewinding is completed, set "10" to the variable [a] to slowly blink 0, and if the current number of shots is not "0", that is, a feeding error. In case of, the variable [a] should be set so that it blinks quickly.
Is set to "3" (steps F-224 to 22)
6). Then, the content of the variable [a] is set in the hardware timer of 50 msec unit (step F-22).
7). Next, the current number of shots is not 0, and S1
When is ON, after jumping to the rewinding routine after displaying the number of frames (steps F-228 to 230).

When the current number of shots is 0 or when S1 is off, it is judged whether or not the rewind switch is turned on (step F-231). If the rewind switch is turned on, the number of frames is determined. After the display, jump to the rewinding routine (step F-232). By jumping to the rewind routine after displaying the number of frames in this way,
When the sound is noisy, the power is turned off to stop the rewinding, and then the rewinding can be restarted by moving to a place where the sound may be emitted.

On the other hand, if the rewind switch is off, it is judged whether or not the back cover 24 is open (step F-233). If the back cover 24 is open, the current number of shots is displayed in blinking. , A routine for checking the opening of the back cover is executed (step F-234), and step (F-235)
Proceed to. If the case back 24 is closed, step (F-23
Skip 4) and proceed to step (F-235).

At step (F-235), the position of the power switch is read and set to the variable [a]. Then, it is judged whether or not the position of the power switch is changed from the time when this routine is entered to the present time (step F-236), and if it is changed, the liquid crystal (display panel 19) is turned on. However, the position of the power switch after the change is OF
It is determined whether or not it is F (steps F-237, 23).
8). As a result, if the position of the power switch is OFF, it is set to the variable [position of the power switch], the silent mode flag is reset, the current number of shots is displayed (step F-239), and the step ( F-24
Go to 0).

In step (F-240), it is determined whether the timer over flag is reset. As a result, if the timer over flag is reset, the liquid crystal blinking counter is incremented by 1 (step F-240,
241). Then, when the count value of the liquid crystal blinking counter becomes an odd number, the liquid crystal is turned on, and when the count value of the liquid crystal blinking counter becomes an even number (steps F-242 to 244), the step ( Return to F-224). On the other hand, if the timer over flag is set, skip steps (F-241 to 244) and
Return to step (F-228).

If it is determined in step (F-238) that the changed position of the power switch is not OFF,
It is determined whether or not the position of the power switch before the change is OFF, and when the position before the change is OFF, the silent mode flag is reset for the time being (step F-2).
45, 246). Then, when the switch of the MF button 16 is turned on, the silent mode flag is set (steps F-247 and 248). By this processing, it is possible to turn off the power supply at the time of rewinding, temporarily suspend it, and select the normal rewinding mode or the silent mode when rewinding is resumed.

When the position of the power switch before the change is not OFF and when the switch of the MF button 16 is not turned on, the position of the power switch is changed to the variable after the new reading in the variable "a". [Power switch position]
(Step F-249). If the current number of shots is not 0, the process jumps to the rewinding routine after displaying the number of frames (steps F-250 and 251), and if the current number of shots is 0, the process proceeds to step (F-240). move on. 13-17. Return to Parent Routine (FIG. 94) In this routine, the contents of the stack pointer of the parent routine are set in the variable [s] (step F-260),
To return.

[0153]

As described above, according to the film sensitivity setting device of the present invention, when a film having DX information is loaded, this information is preferentially input as the film sensitivity information, and In this state, since the film sensitivity is changed by the manual input means, the film sensitivity can be set by a manual operation only when the photographer wants to perform the sensitized shooting and the desensitized shooting arbitrarily.

When a film without DX information is loaded or when no film is loaded, the film speed information stored in the EEPROM in advance is input,
Further, in this state, the film sensitivity information is changed based on the manual operation and is stored in the EEPROM, so that it is not necessary to repeat the setting when a film having the same sensitivity and no DX information is loaded again.

[Brief description of drawings]

FIG. 1 is an external view of an electronic camera viewed from a diagonal front.

FIG. 2 is an external view of the electronic camera of FIG. 1 seen from above.

FIG. 3 is an external view of the electronic camera of FIG. 1 viewed from the back side.

FIG. 4 is a diagram showing display contents in a finder.

FIG. 5 is a front view of the shutter mechanism in a closed state.

FIG. 6 is a front view of the opened state of the shutter mechanism.

FIG. 7 is a front view of the diaphragm mechanism in a fully opened state.

FIG. 8 is a front view of a diaphragm mechanism with a diaphragm value of F5.6.

FIG. 9 is a front view of a lens driving mechanism.

FIG. 10 is a sectional view of a lens driving mechanism.

FIG. 11 is a circuit block diagram of the electronic camera.

FIG. 12 is a time chart of lens drive control.

FIG. 13 is a program diagram showing exposure control in the program mode.

FIG. 14 is a diagram showing an effective reach distance of flash light.

FIG. 15 is a diagram showing exposure control at the time of variable aperture sync photography.

FIG. 16 is a program diagram showing exposure control in the aperture priority mode.

FIG. 17 is a diagram showing an exposure display when the release button is half-pressed in the program mode.

FIG. 18 is a flowchart showing a main routine at power-on.

FIG. 19 is a flowchart showing a back lid opening routine.

FIG. 20: Hoisting routine for main ON (main ON
3 is a flowchart showing a time routine 1).

FIG. 21: Main dial OFF routine (main ON
9 is a flowchart showing a time routine 2).

FIG. 22 is a flowchart showing a main dial scan routine.

FIG. 23 is a flowchart showing a diaphragm dial scan routine.

FIG. 24 is a flowchart showing an operation button scanning routine.

FIG. 25 is a flowchart showing an UP-PUSH routine.

FIG. 26 is a flowchart showing a DOWN-PUSH routine.

FIG. 27 is a diagram showing management numerical values used by a microcomputer in various routines for determining shooting conditions.

FIG. 28 is a view illustrating a sequel to FIG. 27;

FIG. 29 is a diagram showing a flashmatic table.

FIG. 30 is a view continued from FIG. 29;

FIG. 31 is a diagram showing constants used by a microcomputer in various routines for determining shooting conditions.

FIG. 32 is a diagram showing variables used by the microcomputer in various routines for determining shooting conditions.

FIG. 33 is a flowchart showing a P calculation routine.

FIG. 34 is a flowchart showing a P-LOOP routine.

FIG. 35 is a flowchart continued from FIG. 34.

FIG. 36 is a continuation of the flowchart of FIG. 35.

FIG. 37 is a flowchart continued from FIG. 36.

FIG. 38 is a continuation of the flowchart of FIG. 37.

FIG. 39 is a diagram for explaining aperture change control for avoiding underexposure and overexposure during variable sync photography.

FIG. 40 is a flowchart showing a P mode S1 time routine.

41 is a continuation of the flowchart of FIG. 41. FIG.

FIG. 42 is a flowchart showing an AM mode S1 time calculation routine.

FIG. 43 is a flowchart continued from FIG. 42.

FIG. 44 is a flowchart continued from FIG. 43.

FIG. 45 is a flowchart showing an M mode S0 time calculation routine.

FIG. 46 is a continuation of the flowchart of FIG. 45.

FIG. 47 is a flowchart showing a routine for calculating a proper flash F value.

FIG. 48 is a continuation of the flowchart of FIG. 47.

FIG. 49 is a flowchart showing a calculation routine in flash mode S1.

FIG. 50 is a continuation of the flowchart of FIG. 49.

FIG. 51 is a flowchart showing a push-S1 routine.

FIG. 52: convert-to-theory-ex
It is a flow chart which shows an e-tv routine.

FIG. 53 convert-to-run-exe-t
It is a flowchart which shows a v routine.

FIG. 54 is a flowchart showing an aeb-execute routine.

FIG. 55 is a continuation of the flowchart of FIG. 54.

FIG. 56: shutter-drive-and-wi
It is a flow chart which shows an nd routine.

FIG. 57 is a flowchart showing a routine for waiting until S2 is ON or S1 is OFF.

FIG. 58 is a flowchart showing a free-s1 routine.

FIG. 59 is a flowchart showing an infrared main routine.

FIG. 60 is a flowchart showing a shutter button waiting routine.

FIG. 61 is a flowchart showing a lens driving routine.

FIG. 62 is a circuit block diagram of an adapter for data communication with an external device.

63 is a diagram showing a connection between a PNP transistor in the data communication adapter of FIG. 62 and a thyristor in the flash circuit of the camera.

FIG. 64 is a time chart showing communication control with an external device.

FIG. 65 is a flowchart showing a 1-byte transmission routine.

FIG. 66 is a flowchart showing a 1-byte reception routine.

FIG. 67 is a diagram showing constants used by a microcomputer in various film feeding routines.

FIG. 68 is a diagram showing variables used by the microcomputer in various film feeding-related routines.

FIG. 69 is a flowchart showing a film winding subroutine.

70 is a continuation of the flowchart of FIG. 69. FIG.

71 is a continuation of the flowchart of FIG. 70. FIG.

FIG. 72 is a flowchart showing a film rewinding subroutine.

FIG. 73 is a flowchart showing a routine for returning to the parent after rewinding.

FIG. 74 is a flowchart showing an H-wait routine for an SSP signal.

FIG. 75 is a flowchart showing an L waiting routine for an SSP signal.

FIG. 76 is a flowchart showing a routine for waiting for an HSP transition to an HSP signal during normal rotation.

FIG. 77 is a flow chart showing a routine for waiting for HSP change of SSP signal at the time of reverse rotation.

FIG. 78 is a flowchart showing a power switch cancel check routine.

FIG. 79 is a flowchart showing a routine for checking the opening of the back cover.

FIG. 80 is a flowchart showing a routine for stopping the motor by braking it for 50 msec.

81 is a flowchart showing an abort timer set routine. FIG.

FIG. 82 is a flowchart showing a routine for recording various data in the EEPROM.

FIG. 83 is a flowchart showing a motor forward rotation start routine.

FIG. 84 is a flowchart showing a motor reverse rotation start routine.

FIG. 85 is a flowchart showing a motor forward rotation stop routine.

FIG. 86 is a flowchart showing a routine for returning two frames and returning to the parent.

87 is a continuation of the flowchart of FIG. 86. FIG.

88 is a flowchart showing a rewinding routine after displaying the number of frames. FIG.

FIG. 89 is a flowchart showing a timer abort execution routine.

90 is a continuation of the flowchart of FIG. 89. FIG.

FIG. 91 is a flowchart showing a routine for waiting for opening of the back cover in S1.

92 is a continuation of the flowchart of FIG. 91. FIG.

FIG. 93 is a continuation of the flowchart of FIG. 92;

FIG. 94 is a flowchart showing a routine for returning to the parent.

[Explanation of symbols]

 1 Photographic lens 2 Lens barrel 4 Metering window 6 Autofocus window 7 Finder 9 Main dial 10 Release button 11 Aperture setting dial 12 Up button 13 Infrared mode setting button 14 Down button 16 Manual focus button 17 Select button 19 Display panel 20 Accessory shoe 21 X contact 22 Contact for charging completion signal 24 Back cover 80 Microcomputer 83 DX code reading circuit 84 Photometric circuit 85 Distance measuring circuit 86a, 86b, 87 driver 88 EPROM 89 Display panel driver 98 Rewindless switch 92 Strobe circuit 94 Film feed transmission No. generation unit 99 Back cover open / closed detection switch MS Shutter drive motor MI Aperture drive motor ML Lens drive motor ADP adapter

[Procedure amendment]

[Submission date] September 27, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

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Claims (1)

[Claims] 1. A film sensitivity setting device for a camera, comprising an automatic sensitivity setting means for inputting film sensitivity information laid on a cartridge and a manual sensitivity setting means for inputting film sensitivity information set by a manual operation, wherein: A first storage unit that retains a memory of the film sensitivity information input by the automatic sensitivity setting unit or the manual sensitivity setting unit as information at the time of exposure control; and a second storage unit that stores a predetermined film sensitivity information in advance. Firstly, the automatic sensitivity setting means is operated to input the film sensitivity information based on the closing of the back cover or the completion of the autoloading operation from the state in which the film having the film sensitivity information is loaded. Storage control means, and the manual setting means from a state in which film sensitivity information is stored in the first storage section by the first storage control means In a state in which a second storage control unit that allows the change of the film sensitivity information of the first storage unit by the above and stores the changed film sensitivity information in the first storage unit and a film having no film sensitivity information is loaded, The first
Third storage control means for changing the film sensitivity information stored in the storage portion to the film sensitivity information stored in the second storage portion, and the film sensitivity information stored in the first storage portion and the third storage control portion under the control of the third storage control means. A fourth memory which allows the film sensitivity information in the second memory unit to be changed by operating the manual setting means while being stored in the second memory unit and stores the changed film sensitivity information in the first memory unit. A film sensitivity setting device for a camera, comprising: a control means.