JPH07128702A - Camera provided with picture size varying function - Google Patents

Abstract

PURPOSE:To obtain a camera excellent in quick photographing performance by eliminating troublesome operation for switching a photographic picture plane size. CONSTITUTION:This camera is provided with a photographic picture plane size decision means 43 which detects an exposure mode set by an exposure mode setting means 42, decides the photographic picture plane size in accordance with the detected mode, and outputs such information to photographic picture plane size changing means 4 and 54. By turning attention to the existence of the photographic picture plane size whose frequency in use becomes extremely high in accordance with the selected exposure mode (for example, a portrait mode, a landscape mode, a close-up mode, and a sport mode, etc.), the photographic picture plane size is automatically changed in accordance with the information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a camera with a screen size changing function, which has a shooting screen size changing means for changing the shooting screen size according to input shooting screen size information.

[0002]

2. Description of the Related Art A conventional camera with a variable screen size function
This will be described with reference to FIGS.

FIG. 25 is a rear view of the main part of the camera in a full size screen (hereinafter referred to as H size screen) state, and FIG.
Is a rear view of the main part of the camera in a vertical cut size screen (hereinafter referred to as P size screen), and FIG. 27 is a rear view of the main part of the camera in a horizontal cut size screen (hereinafter referred to as L size screen). is there.

In these figures, 301 is a fixed screen of the camera. Reference numeral 302 is a manual switch for switching the screen size, which exposes only the operation part 302a with an index that can be touched by a finger on the external appearance of the camera, and fits the long holes 302b and 302c with pins 304 and 305 implanted in the camera body (not shown). They are held together so that they can slide up and down. Further, the long hole 302d provided in the projecting portion and the pin 306d planted in one arm 306a of the three-legged lever 306 are fitted to each other,
The sliding force is transmitted to the lever 306 as a rotational force. Thirty
Reference numeral 3 denotes a character portion that is provided on the external appearance of the camera and indicates the screen size, and is located at a position corresponding to the index of the operation unit 302a. still,
The manual knob 302 for switching the screen size is provided with a click not shown so that it can be easily stopped at the positions of the three screen sizes described above.

Reference numeral 306 is a three-legged lever, which has three arms 306.
It has a, 306b, 306c and is rotatably held around the axis P. A pin 306e is attached to the tip of the arm 306b.
Has been planted, and a pin 306f is provided in the middle of the arm 306c.
Has been planted. The arm 306c is itself a part of a screen shielding portion that forms an L size screen. 307 is a shielding lever that is rotatably held about the axis Q,
The long hole 307a is fitted to the pin 306e, and the lever 307 itself is a part of a screen shielding portion forming a P size screen. A shield lever 308 is rotatably held around the axis R, and the long hole 308c on the arm 308a fits the pin 306f, and the arm 308b forms a P-size screen. It has become a part. Thirty
8d is a pin implanted in the arm 308b. Reference numeral 309 denotes a shielding lever that is rotatably held around the axis S, and a long hole 309c on the arm 309a fits with the pin 308d, and the arm 309b is a part of a screen shielding portion that forms an L size screen. Has become. In addition, in the drawing, 310 indicated by a chain double-dashed line indicates the outer shape of the camera.

In the above structure, when the screen size is switched, when the operation portion 302a of the manual switch 302 is slid upward from the H size screen state of FIG. 25, the levers are connected to each other to the P size screen state of FIG. become.
Further, when the operating portion 302a is slid downward from the H size screen state of FIG.
It becomes the L size screen state.

FIG. 28 is a viewfinder screen of a conventional camera with a variable screen size function, in which the entire screen shows H size, the inner range sandwiched by the two-dot chain line A has the P size, and the one-dot chain line B has sandwiched it. The inner range indicates the L size.

[0008]

In the conventional camera with a variable screen size function described above, the photographer has to make a judgment according to the photographing situation and switch to an appropriate screen size by manual operation. There was such a problem.

1) Each time a picture is taken, it is necessary to look through the finder to determine whether the current screen size is appropriate, and if it is not, the switching operation must be performed manually, which is troublesome. It lacks quick-shooting performance and misses a photo opportunity.

2) With a specially designed lens, H
Make the image circle smaller than the size, use an interchangeable lens designed for L size, or
Even when using an interchangeable lens designed for P size only by cutting the top and bottom for miniaturization, it is necessary to manually operate to an appropriate screen size, and if you forget it or make a mistake , L size interchangeable lens
As shown in FIG. 31, a photograph in which the screen corner portion is shaded, and in the case of the interchangeable lens for the P size, a photograph in which the screen is shaded at the top and bottom are formed, respectively, resulting in a failure photograph.

3) When a backlit scene such as the subject with the sun in the background shown in FIG. 32 is photographed on the H size screen, FIG.
Alternatively, as shown in FIG. 34, a ghost or flare due to reflection of a high-brightness light source such as the sun in the lens barrel is reflected in the screen, and the quality of the photograph (print) is degraded.

(Object of the Invention) A first object of the present invention is a camera with a variable screen size function, which eliminates the troublesome operation of switching the shooting screen size, has an excellent quick-shooting property, and does not cause a photo failure. Is to provide.

A second object of the present invention is to provide a camera with a variable screen size function which enables the user to know the current shooting screen size by looking through the viewfinder and to easily determine the composition.

[0014]

According to the present invention, the exposure mode set by the exposure mode setting means is detected, the photographing screen size is determined according to the detection, and this information is output to the photographing screen size varying means. A shooting screen size determining means is provided, and in the depth priority AE mode, when distance measuring information of two or more different points in the shooting screen is input from the distance measuring means,
Outputs specific shooting screen size information to the shooting screen size changing means, and outputs specific shooting screen size information other than the above to the shooting screen size changing means when distance measurement information at the same point is input more than once. And a shooting screen size determining means for inputting the information of the shooting lens mounted on the camera, determining the shooting screen size according to the information, and outputting this information to the shooting screen size changing means. If a backlight is detected by the backlight detection means, a size other than the shooting screen size with the maximum area is set as the shooting screen size at this time, and this is output to the shooting screen size changing means. A shooting screen size determining means is provided, and the shooting screen size is determined according to the attitude information of the camera from the attitude detecting means, and is output to the shooting screen size changing means. A shooting screen that is extremely frequently used depending on the exposure mode selected, the information of the shooting lens to be mounted, the orientation of the camera at the time of shooting is the vertical position or the horizontal position, and whether it is a backlight scene or not. Focusing on the existence of the size, the shooting screen size is automatically changed according to the information.

Further, a finder screen size switching means for switching the screen size of the finder is provided in association with the operation of the photographic screen size changing means so that the changed photographic screen size and the finder shooting screen size are always matched. There is.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

1 to 22 are views according to an embodiment of the present invention. FIG. 1 is a rear view of the main part of the camera when the H size screen is displayed, and FIG. 2 is a viewfinder screen when the state shown in FIG. It shows a screen switching member placed on the surface. Figure 3
4 is a rear view of the main part of the camera in the P size screen, and FIG. 4 is a viewfinder screen in the state of FIG. 3, showing a screen switching member placed on the real image plane. FIG. 5 is a rear view of the main part of the camera in the L size screen, and FIG. 6 is a viewfinder screen in the state of FIG. 5, showing a screen switching member placed on the real image plane.

1 to 6, reference numeral 1 is a fixed screen of the camera. Reference numeral 2 is a manual switch for switching the screen size, which exposes the operation unit with an index that can be touched with a finger on the external appearance of the camera, so that the three positions P, H, and L can be arbitrarily switched and selected. Reference numeral 3 denotes a character portion that is provided on the external appearance of the camera and indicates the screen size, and is located at a position corresponding to the index of the manual switch 2. The manual switch 2 is provided with a click (not shown) so that it can be easily stopped at the above-mentioned three positions.
4 is a screen size switching motor, 5 is a pinion gear fixed to the rotary shaft of the screen size switching motor 4, 6 is a reduction gear train, 7 is a final stage gear, and 8 is a pin implanted in the final stage gear 7. Thus, it is rotatably fitted to one end of the connecting rod 9. Reference numeral 10 denotes a connecting shaft that is planted at the other end of the connecting rod 9, and is rotatably fitted to the end of one arm 11a of the trifurcated lever 11. Reference numeral 10a is a pin implanted in the connecting shaft 10 and made of an insulating material.
Activate the contact piece of.

Reference numeral 11 is a three-legged lever, which has three arms 11a and 1a.
It has 1b and 11c, and is rotatably held around an axis A fixed to a main body (not shown). A pin 11e is implanted in the tip of the arm 11b, and a pin 11f is implanted in the middle of the arm 11c. The arm 11c is itself a part of the screen shielding portion forming an L size screen. 12
Is a shielding lever which is rotatably held about an axis B fixed to a camera body (not shown).
1e is fitted, and the shielding lever 12 itself is a part of a screen shielding portion forming a P size screen. Reference numeral 13 denotes a shielding lever which is rotatably held about an axis C fixed to a camera body (not shown). The pin 11f is fitted into the long hole 13c on the arm 13a, and the arm 13b is P. It is a part of the screen shield that forms the size screen. 13d is a pin implanted in the arm 13b. Reference numeral 14 is a shield lever that is rotatably held about an axis D fixed to a camera body (not shown). The pin 13d is fitted into the long hole 14c on the arm 14a, and the arm 14b is L. It is a part of the screen shield that forms the size screen.

That is, the arm 11c of the three-legged lever 11 and the arm 14b of the shield lever 14 form a screen shield portion for forming an L size screen, and the shield lever 12 and the shield lever 1
The arm 13b of No. 3 constitutes a screen shielding portion forming a P size screen.

Reference numeral 15 is a screen size changeover detection switch, and 4
The contact pieces 15a, 15b, 15c, 15d of the book are the insulating base 1.
The root is fixed to 5e, and the contact pieces 15a and 15b are in a free state.
Are in contact. Reference numeral 16 is a fixed frame of the finder screen of the camera.

Reference numeral 17 denotes a finder trifurcating lever, which has three arms 17a, 17b and 17c, and is rotatably held around an axis E fixed to a camera body (not shown). At the tip of the arm 17a, by a power transmission lever mechanism (not shown),
The movement of the arm 11b of the above-mentioned three-legged lever 11 is transmitted, and is linked to the switching operation of the photographing screen. Arm 1
A pin 17e is planted at the tip of the arm 7c.
A pin 17f is planted midway. The arm 17c itself is a part of a screen shielding portion that forms a finder screen corresponding to the L size. Reference numeral 18 denotes a finder shielding lever that is rotatably held about an axis F fixed to a camera body (not shown).
7e is fitted, and the lever 18 itself is a part of the finder shielding portion that forms a finder screen corresponding to the P size. Reference numeral 19 is an axis G fixed to a camera body (not shown).
With a finder shield lever that is rotatably held around, the finder shield part that fits the pin 17f into the elongated hole 19c on the arm 19a and the arm 19b forms a finder screen corresponding to P size. Has become a part of. 1
9d is a pin implanted in the arm 9b. Reference numeral 20 denotes a finder shielding lever that is rotatably held about an axis I fixed to a camera body (not shown), and is a long hole 2 on the arm 20a.
The above-mentioned pin 19d is fitted to 0c, and its arm 20b is a part of the finder shielding portion forming a finder screen corresponding to the L size.

That is, the arm 1 of the finder three-legged lever 17
7c and the arm 20b of the viewfinder shielding lever 20
A finder shielding portion that forms a finder screen corresponding to the size is formed, and the finder shielding lever 18 and the arm 19b of the finder shielding lever 19 form a finder shielding portion that forms a finder screen corresponding to the L size.

In addition, in FIG. 1 to FIG.
Indicates an outer shape of the camera, and 22 indicates an autofocus distance measuring frame.

FIG. 7 is a view showing a photographing mode dial portion provided on the upper surface of the camera.

In FIG. 7, reference numeral 23 is a camera upper lid, 24 is a camera apron, 25 is an eyecup, 26 is a photographing lens, and 27 is an index of a mode dial provided on the camera upper lid 23. Reference numeral 28 denotes a disk-shaped photographing mode dial, which is rotatably held about a center, has a knurl formed on its outer periphery to prevent slippage, and has display portions 29 to 38 indicating the respective modes provided on the upper surface. A click (not shown) is provided at the position of the index 27 so as to stop the display of each mode.

Now, the display sections 29 to 38 provided on the photographing mode dial 28 and showing the respective modes will be described.

Reference numeral 29 is a lock mode display section for turning off the power of the camera to make it inoperative, 30 is a program AE mode display section, 31 is a shutter priority AE mode display section, 32 is an aperture priority AE mode display section, and 33 is a manual. An exposure mode display unit, 34 is a depth priority AE mode display unit, 35 is a portrait mode display unit that sets the aperture to the open side so as to blur the background and make a person stand out, and 36 is for clearly photographing from a near view to a distant view. A landscape mode display that sets the aperture to the small aperture side, 37 is a close-up mode display that is suitable for taking close-up subjects such as flowers and insects using the macro mechanism built into the lens.
Reference numeral 38 denotes a sports mode display unit for setting the shutter speed to a high speed side so that a fast-moving subject such as sports or athletic meet can be photographed in stop motion.

Note that the depth-first AE is described in Japanese Patent Laid-Open No.
No. 3-85722, “In order to automatically determine the aperture value that guarantees the in-focus state for each of a plurality of subjects, the defocus amount for the plurality of subjects should be halved. It is an AE mode in which the lens is moved, an aperture value that allows each subject to fall within the depth is obtained from the defocus amount, and this is used as the shooting aperture. "

FIGS. 8, 9 and 10 are front views of the camera showing the state of the posture detection switch of the camera. FIG. 8 is a normal position, FIG. 9 is a grip lower vertical position, and FIG. 10 is a grip upper vertical position. The positions are shown respectively.

In these figures, 39 is a movable contact piece,
A conductive leaf spring having a certain width in the direction perpendicular to the plane of the drawing, and a conductive weight 39a is attached to the tip thereof. Four
0 and 41 are fixed contact pieces. It should be noted that the movable contact piece 39 has sufficient rigidity so that the weight 39a does not swing in the hand-held state of the camera during normal shooting in the normal position shown in FIG. 8, and the vertical position as shown in FIGS. If it becomes, weight 3
9a is elastically deformed so that it can contact the fixed contact pieces 40 and 41.

FIG. 11 and FIG. 12 are views showing a state of looking through the finder in the depth priority AE mode.

In FIG. 11, the first button of the release button is aimed at the same place on the face of one person with the autofocus distance measuring frame 22.
The screen is switched to the L size in the state after the stroke (SW1) is pressed twice and the distance is measured twice. 12
Is a scene in which two people are lined up so that they overlap each other at a distance with the autofocus ranging frame 22. First, aim at the person in front and press the release button with the first stroke (SW1).
The screen is switched to the H size in the state after pressing once to measure the distance, and then aiming at the person behind by the autofocus distance measuring frame 22 and pressing the release button to the first stroke (SW1) to measure the distance. .

FIG. 13 and FIG. 14 are views showing a screen shot of a backlit scene such as an object with the sun as the back.

In FIG. 13, it is determined that the influence of a high-intensity light source such as the sun is reflected in the center of the upper part of the H size screen,
Show the state that the screen is automatically switched to P size,
FIG. 14 shows a state in which it is determined that the high-luminance light source is largely reflected on the left edge of the screen on the H size screen, and the screen is automatically switched to the L size.

FIG. 15 is a circuit block diagram showing a main part of the camera with a variable screen size function in the above configuration.

In FIG. 15, reference numeral 42 (SWmd) denotes a photographing mode of the camera (program AE, shutter priority AE,
Aperture-priority AE, manual exposure, depth-priority AE, portrait, landscape, close-up, sports) is a shooting mode dial switch that is linked to the operation of the shooting mode dial 28 for setting information, and mode information according to the setting mode. To the Pa port of the microcomputer 43. Reference numeral 44 (SWhnd) is a screen size switching manual switch (corresponding to 2 in FIG. 1), which includes an operating section, a lock mechanism (not shown), and a switch SW interlocked therewith.
The switch SWhnd is turned on so that the screen size can be selected and the operation unit can be slid. Then, the screen size (P,
Any one of H and L) Information is transmitted to the Pb port of the microcomputer 43.

Reference numeral 45 denotes a photometric (AE) sensor, which substantially corresponds to the entire photographing screen, and is divided into a plurality of parts so that the sensor part has the same area in the central part and the peripheral part so as to obtain the same output for the same luminance. At least the center (sensor portion 45a), the top (sensor portion 45b), and the bottom (sensor portion 45)
c), the left (sensor section 45d), and the right (sensor section 45e) are configured to obtain five independent outputs.
A photometric circuit 46 amplifies and calculates the output of the AE sensor 45, and transmits the A / D converted photometric output to the Pc port of the microcomputer 43. 47 (SW1) is a switch that is turned on by the first stroke of a release button (not shown), and 48 (S
W2) is a switch which is turned on by the second stroke of the button, 49 (SWdep) is a switch which is turned on by the first stroke of a release button (not shown) like the switch 47, and 50a, 50b and 50c are pull-down switches. The up resistors 51 to 53 are inverters which output a high level signal when each of the switches is turned on, and these outputs are the ports Pd1, Pd2 and Pd3 of the microcomputer 43.
Are typing in. A motor driver 54 is connected to the Pe port of the microcomputer 43 and operates the screen size switching motor 4 in response to a signal from the port to switch the shooting screen size.

Reference numeral 15 (SWasp) is the above-mentioned screen size changeover detection switch which is operated in conjunction with the photographing screen size changeover mechanism, and is at each switch position (P, P when the above-mentioned each shielding lever forms a predetermined screen size). H, L) turns on. 55a, 55b and 55c are pull-up resistors, and 56 to 58 are inverters that output a high level signal when each position (P, H, L) of the switch 15 is turned on. It is input to each port Pf1, Pf2, Pf3. 39, 40 and 41 are camera posture detection switches (S
Wp). 59a and 59b are pull-up resistors, 6
Reference numerals 0 and 61 denote inverters that output high level signals when the fixed contacts (hereinafter, referred to as switch terminals) 40 and 41 are turned on, and these outputs are input to the ports Pg1 and Pg2 of the microcomputer 43. is doing.

Reference numeral 62 is a display for digitally displaying the shutter speed value and aperture value output from the Pi port of the microcomputer 43, and the number of times of distance measurement (for example, DEP1, DEP2) at the time of depth priority AE on, for example, a 7-segment liquid crystal display. It is a vessel. Reference numeral 63 denotes an autofocus (AF) sensor that receives a light flux image incident through a photographing lens (not shown), and 64 denotes A
The focus detection circuit calculates the defocus amount until focusing based on the signal from the F sensor 63, and the output of the circuit is transmitted to the Pj port of the microcomputer 43.

Each of the above circuit elements is provided on the camera body side, and on the lens side, focal length information of the lens (in the zoom lens, focal length information corresponding to each zoom position of the lens) and special information are provided. With the specification lens, focal length information & special specification lens information detection circuit 65 for detecting information of special specification lens designed exclusively for L size and P size,
A communication controller 66 is provided for transmitting the information from the focal length information & special specification lens information detection circuit 65 to the Ph port of the microcomputer 43 on the camera side.

In the above structure, information communication is performed between the camera body and the lens. That is, on the lens side, the focal length information and the information on the special specification lens detected by the special specification lens information detection circuit 65 are transmitted to the Ph port of the microcomputer 43 on the camera side via the communication controller 66. It On the other hand, from the camera body side,
An autofocus drive signal for driving and controlling an AF motor (not shown) provided in the lens
Input from the h port via the communication controller 66.

Next, the operation of the camera with the variable screen size function in the above configuration will be described with reference to the program flow charts shown in FIGS. The program is stored in the ROM built in the microcomputer 43, and each number indicates a program step.

First, when the power supply (not shown) is turned on and the power supply to the microcomputer 43 is turned on, the power-up is cleared in step 1 of FIG. 16, and thereafter the operation is performed in the following order of steps. [Step 2] The setting mode information of the photographing mode dial switch 42 transmitted to the Pa port of the microcomputer 43 is read, and as a result, P (program AE) or TV
Step 3 if (shutter priority AE), AV (aperture priority AE), or M (manual exposure) mode
Proceed to. [Step 3] A signal for turning off the display 62 is sent from the Pi port of the microcomputer 43 to turn off the display on the display 62. [Step 4] The states of the switches SW1 (47) and SW2 (48) are detected via the Pd1 and Pd2 ports of the microcomputer 43, and the switch SW1 or S is detected as the detection result.
When W2 is on, go to step 5, SW1 and SW2
If both are off, repeat this step.

It is now assumed that the release button is operated and the switch SW1 or SW2 is turned on. Therefore, the operation shifts from step 4 to step 5. [Step 5] The information of the taking lens attached to the camera is read through the Ph port of the microcomputer 43, and the lens is designed for the L size or the P size screen in which the image circle is smaller than the H size screen. If the lens is a special lens, the process proceeds to step 6. [Step 6] The focal length information of the photographing lens attached to the camera is read through the Ph port of the microcomputer 43, and it is judged whether or not the focal length of the lens is larger than "300 mm". Proceed to. In addition, the focal length of the taking lens attached to the camera is “30
If it is "0 mm" or more, call "subroutine 2".

The "subroutine 2" will be described with reference to FIG. This operation is step 1
Beginning at step 131 via 30. [Step 131] The focal length of the taking lens is "300".
When using a super-telephoto lens that exceeds "mm", the size of the screen is very rarely P size, which is characterized by a panoramic screen that emphasizes the lateral spread. Therefore,
In order to see what the current shooting screen size is, the state of the screen size changeover detection switch 15 is set by the microcomputer 43.
Confirm through the ports Pf1 to Pf3. If the port Pf1 is at high level, it means that the screen size is P size as shown in FIG. If the size is other than P size, the process proceeds to step 133. [Step 132] Here, P when the super telephoto lens is used
In order to avoid the size screen, a signal for driving the screen size switching motor 4 is output from the Pe port of the microcomputer 43 to the motor driver 54.

As a result, the screen size switching motor 4 rotates, and each member (triple lever 11 is moved through the reduction gear train 6, the final stage gear 7, and the connecting rod 9 so that the screen becomes the size H shown in FIG. , The shielding levers 12, 13, 14). At that time, the contact pieces 15a and 15b of the screen size changeover detection switch 15 are turned on, and a high level signal is transmitted to the port Pf2 of the microcomputer 43. Then, the microcomputer 43 detects that the screen has been switched to the H size and stops the screen size switching motor 4. Further, at this time, in conjunction with the switching operation of the photographing screen, as shown in FIG. 2, each member (arm portion 17c and each lever 18) is arranged so that the finder screen becomes H size by the power transmitted to the finder three-legged lever 17. , 1
(9, 20) is moved, and the photographer is informed through the viewfinder that the screen size has switched to H size.

Upon completion of the above operation, step 134
Go to.

On the other hand, if the port Pf2 or Pf3 of the microcomputer 43 is at a high level in the above step 131, the screen size is H or L size (because it is not P), so as described above, step 133 Proceed to. [Step 133] Here, the screen size is left unchanged and the process proceeds to step 134. [Step 134] Here, this "subroutine 2" is ended, the process returns to the main routine of FIG. 16, and proceeds to step 7.

Returning to FIG. 16, the operation after step 7 will be described. [Step 7] The focus detection circuit 64 is driven, and the defocus amount Xnow detected based on the image incident on the AF sensor 63 via the taking lens is input via the Pj port of the microcomputer 43. [Step 8] The focus lens drive amount is obtained from the defocus amount Xnow obtained in step 7, and P
The AF motor in the lens (not shown) is moved from the h port via the communication controller 66 by a predetermined amount to bring the lens into a focused state.
Then, the process proceeds to step 9. [Step 9] AE sensor 45 divided into five areas
The output of the photometric circuit 46 for A / D converting the output of the sensor and calculating the EV value including the independent output of each sensor is output from the microcomputer 43.
Is input to the Pc port of No. 2, and photometric calculation is performed so that proper exposure is obtained in accordance with each set shooting mode, and the process proceeds to step 10. [Step 10] Sensor unit 4 in the center of AE sensor 45
It is necessary to compare the output of 5a and the outputs of the peripheral sensor units 45b to 45e, and perform backlight compensation depending on whether or not the output of any of the peripheral sensor units is greater than the output of the central sensor unit by a predetermined value A or more. Determine if there is. If the output difference is smaller than the predetermined value A, it is determined that backlight correction is not necessary, and the process proceeds to step 11. On the other hand, when the output difference is larger than the predetermined value A, it is judged that backlight correction is necessary, and "subroutine 1" is called.

Here, the "subroutine 1" will be described with reference to FIG. This operation is step 1
The process is started from step 122 via 21. [Step 122] Either the upper or lower sensor unit 45b or 45c of the AE sensor 45 outputs the central sensor unit 45.
It is determined whether or not the output is equal to or more than a predetermined value K (K> A), and when the output is equal to or more than the predetermined value K, a high brightness light source (or its influence) such as the sun exists above or below the screen. The determination is made, and the process proceeds to step 123. [Step 123] Screen size switching detection switch 15 to see what is the current shooting screen size
Is confirmed through the ports Pf1 to Pf3 of the microcomputer 43. If the port Pf2 or Pf3 is at the high level, it means that the screen size is H or L size as shown in FIG. 1 or FIG. On the other hand, if the Pf1 port is at high level, it means that the screen size is P size as shown in FIG. [Step 124] When there is a high-intensity light source (or its influence) such as the sun above or below the shooting screen in the backlit state and the screen size is H or L size that does not block the top and bottom, As shown in 33, ghosts and flares due to reflection in the lens barrel and the camera are reflected in the shooting screen, and the quality of the photograph (print) is significantly degraded. Therefore,
A signal for driving the screen size switching motor 4 is output from the Pe port of the microcomputer 43 via the motor driver 54 so as to shield the top and bottom of the shooting screen.

As a result, the screen size switching motor 4 rotates, and each member is moved through the reduction gear train 6, the final stage gear 7, and the connecting rod 9 so that the screen becomes the size P shown in FIG. At that time, the contact piece 15 of the screen size detection switch 15
b and 15c are turned on, port Pf1 of the microcomputer 43
A high level signal is transmitted to. Then, the microcomputer 43 detects that the screen has been switched to the P size and stops driving the screen size switching motor 4. Also, in conjunction with the switching operation of the shooting screen, as shown in FIG. 4, each member is moved by the power transmitted to the viewfinder tripod lever 17 so that the viewfinder screen becomes P size, and the screen size is changed to P size. Notify that it has been switched through the viewfinder. Then, the process proceeds to step 128.

On the other hand, in step 122, the AE
The output of either the upper or lower sensor unit 45b or 45c of the sensor 45 is a predetermined value K relative to the output of the central sensor unit 45a.
If it is less than (K> A), the process proceeds to step 125. [Step 125] The output of either the left or right sensor unit 45d or 45e of the AE sensor 45 is the central sensor unit 45.
It is determined whether or not the output is equal to or more than a predetermined value K (K> A), and when the output is equal to or more than the predetermined value K, a high brightness light source (or its influence) such as the sun exists on the left or right of the screen. A determination is made and the process proceeds to step 126. Otherwise, jump to step 128. [Step 126] In order to see what the current shooting screen size is, screen size switching detection switch 1
The state of No. 5 is confirmed via the Pf1 to Pf3 ports of the microcomputer 43. If the Pf2 or Pf1 port is at the high level, it indicates that the screen size is H or P size as shown in FIG. 1 or FIG. 3, and therefore the process proceeds to step 127. On the other hand, if the Pf3 port is at the high level, it means that the screen size is L size as shown in FIG. 5, and the process jumps to step 128. [Step 127] When there is a high-intensity light source (or its influence) such as the sun on the left or right of the shooting screen in the backlight condition and the screen size is H or P size that does not block the left and right, As shown by 34, ghosts and flares due to reflection in the lens barrel and the camera are reflected in the photographing screen, and the quality of the photograph (print) is significantly deteriorated. Therefore, a signal for driving the screen size switching motor 4 is output from the Pe port of the microcomputer 43 through the motor driver 54 so as to shield the left and right of the shooting screen.

As a result, the screen size switching motor 4 rotates, and as shown in FIG. 5, the respective members are arranged so that the screen size becomes L size via the reduction gear train 6, the final stage gear 7, and the connecting rod 9. To move. At that time, the contact pieces 15a and 15d of the screen size switching detection switch 15 are turned on, and the microcomputer 43
High level signal is transmitted to port Pf3 of
Detects that the size has been changed. Then, the microcomputer 43 stops the screen size switching motor 4 via the motor driver 54. Further, in conjunction with the switching operation of the photographing screen, as shown in FIG. 6, each member is moved by the power transmitted to the finder tripod lever 17 so that the finder screen becomes L size, and the screen size is changed to L. Notify that the size has been changed. Then, the process proceeds to step 128. [Step 128] Exposure metering calculation is performed to obtain "+1.5 EV" for the photometric calculation to obtain the proper exposure in Step 9, and the shutter speed and aperture value are changed according to each set shooting mode. Let [Step 129] Here, this "subroutine 1" is ended, the process returns to the main routine of FIG. 16, and step 11
Go to.

Returning to FIG. 16, the operation after step 11 will be described. [Step 11] The photometric calculation result obtained in step 9 or the exposure-corrected photometric calculation result for backlighting is output from the Pi port of the microcomputer 43 to the display unit 62 via "subroutine 1". , The shutter speed and aperture value at that time are displayed. Then, the process proceeds to step 12. [Step 12] Manual switch for screen size switching 44
It is determined whether or not the switch SWhnd of is off. if,
If the photographer is happy with the current shooting screen size,
Since the interlocked switch SWhnd remains in the OFF state without pushing the operation portion of the screen size switching manual switch 44, and the shooting screen size cannot be switched manually, the routine proceeds to step 13. On the other hand, if the photographer is dissatisfied with the current shooting screen size, the operation unit of the screen size switching manual switch 44 is pushed to turn on the interlocked switch SWhnd. In this case, the manual screen size switching is performed. Is accepted, and the process proceeds to step 14. [Step 14] Here, the operation unit of the screen size switching manual switch 44 is moved to a desired position by the photographer, and the microcomputer 43 from the switch SWhnd is moved.
The screen size switching signal at this time is input through the Pb port of the microcomputer 43, and the microcomputer 43 drives the screen size switching motor 4 via the motor driver 54 based on the screen size switching signal, and as described above. And switch the screen size. Then, the process proceeds to step 13.

Further, in step 5 described above, from the information of the photographing lens mounted on the camera at the Ph port of the microcomputer 43, the lens is dedicated to the L size or P size screen whose image circle is smaller than the H size screen. When it is determined that the lens is a special lens designed, "subroutine 3" is called.

The "subroutine 3" will be described with reference to FIG. This operation is step 1
It starts from step 136 via 35. [Step 136] Here, even if the operation portion of the screen size switching manual switch 44 is pressed to perform the screen switching operation, the input acceptance from the switch SWhnd is prohibited. [Step 137] Whether the attached photographic lens is an L size screen dedicated lens is determined from the photographic lens information input to the Ph port, and if it is an L size screen dedicated lens, the process proceeds to step 138. [Step 138] Similar to the operation of step 127, the shooting screen size and the finder screen are switched to the L size, and the process proceeds to step 140.

On the other hand, if it is determined in step 137 that the attached photographic lens is not the L size screen dedicated lens, that is, the P size screen dedicated lens,
Go to step 139. [Step 139] Similar to the operation of step 124,
Switch the shooting screen size and viewfinder screen to P size,
Go to step 140. [Step 140] The distance measuring operation is performed in the same manner as in step 7, and the process proceeds to step 141. [Step 141] The focus lens is driven similarly to the above step 8, and the process proceeds to step 142. [Step 142] The same photometric operation as in step 9 is performed, and the process proceeds to step 143. [Step 143] The outputs of the center sensor unit 45a of the AE sensor 45 and the outputs of the peripheral sensor units 45b to 45e are compared, and any of the outputs of the peripheral sensor units has a predetermined value A from the output of the central sensor unit. It is determined whether or not it is larger than the above, and it is determined whether or not the backlight correction is performed. If the output difference is smaller than the predetermined value A, it is determined that backlight correction is not necessary, and the process proceeds to step 145. On the other hand, when the output difference is larger than the predetermined value A, it is judged that the backlight correction is necessary, and the routine proceeds to step 144. [Step 144] Exposure compensation is performed so as to be “+1.5 EV” for the photometric calculation that gives the proper exposure in step 142, and the shutter speed and aperture value are changed according to the set shooting modes. Let Then, the process proceeds to step 145. [Step 145] The result of the photometric calculation performed in the above step 142 or the result of the exposure-corrected photometric calculation performed for the backlight through the step 144 is displayed in the Pi of the microcomputer 43.
The data is output from the port to the display device 62, and the shutter speed and aperture value at that time are displayed. Then, the process proceeds to step 146. [Step 146] Here, this "subroutine 3" is ended, the process returns to the main routine of FIG.
Go to.

Returning to FIG. 16, the operation after step 13 will be described. [Step 13] The state of the switch SW2 is detected via the Pd2 port of the microcomputer 43. When the switch SW2 is on, the process proceeds to step 15, and when it is off, the process returns to step 2.

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the above steps 2 to 13 are repeatedly executed, and photographing is performed based on the distance measurement result. The lens always moves to the in-focus position, and the shutter speed and aperture value in the selected shooting mode are displayed on the display 62.
When the release button is moved to the second stroke operation state during the above process, this is detected in step 13 as described above, and the following step 15 is executed. [Step 15] An aperture and a shutter (not shown) are operated according to the determined shutter speed and aperture value, an exposure operation is performed on the film, and after the exposure operation is completed, the film is fed by a film feeding mechanism (not shown). increase.

As shown in steps 1 to 15 above,
A series of normal camera operations are performed.

Next, the operation when the DEP (depth priority AE) mode is selected will be described.

In the above step 2, P of the microcomputer 43
From the setting mode information transmitted to the a port, P or Tv
Alternatively, when it is determined that the mode is not Av or M, FIG.
Go to step 16 of. [Step 16] If it is determined from the setting mode information transmitted to the Pa port of the microcomputer 43 that the mode is the DEP mode, the process proceeds to step 17. [Step 17] Similar to step 3, the display on the display 62 is turned off. [Step 18] In the internal memory n of the microcomputer 43, 0 is set as the information on the number of times the switch 49 (SWdep) has been pressed, that is, initialized. [Step 19] Switches SW1 (47) and SWdep (4) via the Pd1 and Pd3 ports of the microcomputer 43.
9) State detection is performed. As a result, the distance measuring frame 22 of the finder is aligned with the subject to be focused, and the first stroke of the release button is made. The switches SW1 and SWde
When both p are turned on, the process proceeds to step 20, and when both SW1 and SWdep are turned off, this step is repeated. [Step 20] Make the same judgment as in Step 5 above,
If the special lens dedicated to the L size or P size screen is not attached, the process proceeds to step 21. [Step 21] Perform the same judgment as in Step 6 above,
If the focal length of the attached photographing lens is smaller than “300 mm”, the process proceeds to step 22. On the other hand, "300 mm"
In the above case, the "subroutine 2" is called and the above-mentioned steps 130 to 134 shown in FIG. 20 are executed. After completion, the procedure returns to the main routine and proceeds to step 22. [Step 22] 1 is stored in the internal memory n of the microcomputer 43 as information on the number of times the switch 49 (SWdep) has been pressed. [Step 23] The distance measuring operation is performed as in step 7, and the defocus amount x (1) is input. [Step 24] The same operation as in step 8, that is, the focus lens drive amount is obtained from the defocus amount x (1), and the photographing lens is brought into the in-focus state. [Step 25] Instruct the display device 62 from the Pi port of the microcomputer 43 to display "dEP1" for notifying the photographer that the defocus amount for the first subject to be focused in the depth priority AE mode has been input. [Step 26] The switches SW1 (47) and SWdep (4) via the Pd1 and Pd3 ports of the microcomputer 43.
9) State detection is performed. As a result, when the finger is released from the release button and both switches SW1 and SWdep are turned off, the process proceeds to step 27, and switches SW1 and SWde
When both p remain on, this step is repeated.

Here, assuming that both the switches SW1 and SWdep are turned off, the operation after step 27 will be described. [Step 27] The states of the switches SW1 (47) and SWdep (49) are detected again at the Pd1 and Pd3 ports. As a result, when the distance measuring frame 22 of the finder is aligned with the next subject to be focused and the first stroke of the release button is made and both the switches SW1 and SWdep are turned on, the process proceeds to step 28, and the switches SW1 and SWd are switched.
When both ep are off, this step is repeated. [Step 28] 2 is stored in the internal memory n of the microcomputer 43 as information on the number of times the switch SWdep is pressed. [Step 29] The same distance measurement operation as in step 7 is performed, and the defocus amount x (2) is input from the first (n = 1) focused state. [Step 30] The same operation as in step 8 above, that is, the focus lens drive amount is obtained from the defocus amount x (2), and the photographing lens is brought into the in-focus state. [Step 31] Instruct the display device 62 from the Pi port of the microcomputer 43 to display "dEP2" for notifying the photographer that the defocus amount for the second subject to be focused in the depth priority AE mode has been input. To do. [Step 32] It is determined whether the defocus amount x (2) for the second subject is substantially equal to 0,
If “x (2) ≈0”, it is determined that the first and second subjects are the same, and the process proceeds to step 33. [Step 33] The state of the screen size changeover detection switch 15 is confirmed through the Pf1 to Pf3 ports of the microcomputer 43 in order to see what the current shooting screen size is. As a result, if the Pf2 or Pf1 port is at the high level, it indicates that the screen size is the H or P size as shown in FIG. 1 or FIG. On the other hand, if the Pf3 port is at the high level, it means that the screen size is L size as shown in FIG. 5, and the process jumps to step 37. [Step 34] From “x (2) ≈0”, first and second
When it is determined that the subject is the same, the subject, for example, a person is one as shown in FIG. 11, and the state where the same position on the face is aimed by the autofocus distance measuring frame 22 is measured twice. , H and P sizes are very rarely photographed with a wide screen size. Therefore, FIG.
Similar to the operation of step 127 of, the photographing screen size and the finder screen are switched to the L size, and the process proceeds to step 37.

If the defocus amount x (2) is not equal to 0 in step 32, it is determined that the first and second subjects are different, and the process proceeds to step 35. [Step 35] In order to see what the current shooting screen size is, a screen size switching detection switch 15
State is confirmed via the Pf1 to Pf3 ports of the microcomputer 43. As a result, if the Pf1 or Pf3 port is at the high level, it indicates that the screen size is the P or L size as shown in FIG. 3 or 5, and therefore the process proceeds to step 36. On the other hand, if the Pf2 port is at the high level, it means that the screen size is H size as shown in FIG. [Step 36] When it is determined that the first and second subjects are different from each other, as shown in FIG.
It is more than a person, and there is a high possibility that they are lined up so as to overlap each other at a distance, and the frequency of shooting with a narrow screen size such as L size is very low. Therefore, similarly to the operation of step 132 in FIG. 23, the photographing screen size and the finder screen are switched to the H size with the spread, and the process proceeds to step 37. [Step 37] A focus lens that halves the defocus for the plurality of target objects so as to determine an aperture value that guarantees a state where both the target objects are in focus by two distance measurement operations. Find the position,
From this focus lens position, an aperture value is calculated so that each subject is within the depth, and this is used as the depth priority shooting aperture Avde.
p.

For example, if the same subject is aimed at the same place such as "x (2) = 0", the depth priority photographing aperture Avdep becomes the open side, and if x (2) is large, the depth priority photographing aperture Avdep is small. It becomes the diaphragm side. [Step 38] The state of the switch SW1 (47) is detected through the Pd1 port of the microcomputer 43. As a result, when the finger is released from the release button and the switch SW1 is off, the process proceeds to step 39, and the switch SW1
When is on, repeat this step. [Step 39] The state of the switch SW1 (47) is detected again via the Pd1 port. As a result, the target object is appropriately framed and the first stroke of the release button is made. When the switch SW1 is on, the process proceeds to step 40, and when the switch SW1 is off, this step is repeated. [Step 40] The defocus amount “x (2) / 2” that halves the defocus for a plurality of target objects by two distance measurement operations is calculated (DEP distance calculation). [Step 41] The drive amount of the focus lens is obtained from the defocus amount “x (2) / 2” obtained in step 40, and an AF motor (not shown) is set from the Ph port of the microcomputer 43 via the communication controller 66. Move a fixed amount to bring it into focus.

Here, for example, if the same object is aimed at the same place by two distance measuring operations, "x (2) / 2≈0", and the focus lens position at the end of the second distance measuring operation is changed. If you aim at a place where the distance is very different, "x
(2) / 2 ”becomes large, and the amount of movement of the focus lens becomes large. [Step 42] The output of the AE sensor 45 for the screen framed in step 39 is A / D converted, and the obtained Ev value is output from the photometric circuit 46 to the microcomputer 43.
, And sets the aperture value to the depth-priority shooting aperture Avdep obtained in step 37, and obtains the shutter speed for proper exposure with respect to the Ev value obtained here (DEP photometric calculation ). [Step 43] The same judgment as in Step 10 is performed, and when backlight correction is not necessary, the process proceeds to Step 44. On the other hand, when backlight correction is required, "subroutine 1" is called, and steps 121 to 129 shown in FIG.
And then returns to the main routine to complete step 44.
Go to. [Step 44] DEP obtained in step 42
The microcomputer 43 displays the photometric calculation result or the exposure-corrected photometric calculation result for backlighting via “subroutine 1”.
Is output from the Pi port to the display 62, and the shutter speed and aperture value at that time are displayed. [Step 45] The same determination as in step 12 is performed. If the switch SWhnd is off, the process proceeds to step 46, and if it is on, the process proceeds to step 47. [Step 47] Similar to step 14, the shooting screen size and the viewfinder screen size are switched to the screen size instructed by the switch SWhnd, and step 46 is performed.
Go to.

Here, in step 20 described above, L
If the special lens dedicated to the size or P size screen is mounted, the above-mentioned "subroutine 3" shown in FIG. 24 is executed, and after the end of this operation, the process returns to the main routine and proceeds to step 46. [Step 46] The state of the switch SW2 is detected through the Pd2 port of the microcomputer 43, and when the switch SW2 is on, the process proceeds to step 147, and when the switch SW2 is off, the process returns to step 39 and the same operation is repeated. .

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the above steps 39 to 46 are repeatedly executed, and the photographing lens is determined based on the distance measurement result. Always moves to the in-focus position and the selected DE
The shutter speed and aperture value in the P mode are displayed.

When the release button is changed to the second stroke state during the above process, this is detected in step 46 as described above, and the following step 147 is executed. [Step 147] Similar to step 15, the exposure operation and the film feeding are performed. Then, the process proceeds to step 148. [Step 148] Return to step 2 of FIG.

Next, the operation when the portrait mode is selected will be described.

In both step 2 and step 16, N
When it is determined to be O and the setting mode information transmitted to the Pa port in step 48 of FIG. 18 is the portrait mode, the process proceeds to step 49. [Steps 49 and 50] The same operations as in Steps 3 and 4 above are performed. [Step 51] Make the same judgment as in Step 5 above,
If NO, the process proceeds to step 52, and if YES, "subroutine 3" is called. After the execution of this "subroutine 3", the process returns to the main routine and proceeds to step 63.

In step 51, it is determined to be NO,
That is, when it is determined that the special lens designed for the L or P size screen is not attached, the process proceeds to step 52 as described above. [Step 52] The same operation as in step 7 is performed. [Step 53] The same operation as in step 8 is performed. [Step 54] The same operation as in step 9 is performed. [Step 55] The same judgment as in step 10 is performed. If YES, the process proceeds to step 56 and NO.
If so, "subroutine 1" is called, after execution of "subroutine 1", the process returns to the main routine and proceeds to step 61.

If it is determined YES in step 55, that is, if it is determined that backlight correction is not necessary, the process proceeds to step 56 as described above. [Step 56] The focal length information of the photographing lens attached to the camera, which is transmitted to the Ph port of the microcomputer 43, is read, and it is determined whether or not the focal length of the lens is “80 mm (medium telephoto)” or more, If it is determined to be “80 mm” or more, the process proceeds to step 57, and if not, the process proceeds to step 61. [Step 57] Camera posture detection switch SWp (39, 4) via the Pg1 and Pg2 ports of the microcomputer 43.
0, 41) is detected. As a result, the switch S
When Wp is on, it is determined that the camera is in the vertical position and the process proceeds to step 58. When it is off, it is determined that the camera is in the horizontal position and the process proceeds to step 60. [Step 58] The same judgment as in step 33 is performed. If YES, the process proceeds to step 59, and if ON, the process proceeds to step 61. [Step 59] In this portrait mode, a long focus lens is mounted rather than a middle telephoto lens, and in portrait photography, the frequency of bust-up shots by one person is extremely high. Therefore, similar to the operation of step 127, the shooting screen size and the finder screen are switched to the L size screen having an appropriate aspect ratio balance.

If it is determined in step 57 that the camera is in the horizontal position, the above-described step 6 is performed.
Go to 0. [Step 60] Make the same judgment as in Step 6 above,
If YES, "subroutine 2" is called, after execution of this "subroutine 2", the process returns to the main routine and proceeds to step 61. On the other hand, if NO, the process directly proceeds to step 61. [Step 61] The result of the photometric calculation performed in the above step 54 or the result of the exposure-corrected photometric calculation for the backlight via the "subroutine 1" is output to the Pi of the microcomputer 43.
The data is output from the port to the display device 62, and the shutter speed and aperture value at that time are displayed. [Step 62] The same judgment as in step 12 above is performed. If YES, the process proceeds to step 63, and if NO, the process proceeds to step 64. [Step 64] The same operation as that in Step 14 is performed, and after the operation is completed, the process proceeds to Step 63. [Step 63] The same judgment as in the above step 13 is performed. If YES, the process proceeds to step 65, and if NO, the process returns to step 50.

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the above steps 50 to 63 are repeatedly executed, and the photographing lens is determined based on the distance measurement result. Always moves to the in-focus position, and the shutter time and aperture value in the selected portrait mode are displayed.

When the release button is changed to the second stroke state during the above process, this is detected in step 63 as described above, and the following step 65 is executed. [Step 65] Similar to step 15, the exposure operation and the film feeding are performed. Then, the process proceeds to step 66. [Step 66] Return to step 2 in FIG.

Next, the operation when the landscape mode is selected will be described.

It is determined to be NO in the above steps 2, 16 and 48, and Pa is determined in step 67 of FIG.
If it is determined that the mode is the landscape mode from the setting mode information transmitted to the port, the process proceeds to step 68. [Steps 68 and 69] The same operations as in Steps 3 and 4 are performed. [Step 70] Make the same judgment as in Step 5 above,
If NO, the process proceeds to step 71. If YES, the "subroutine 3" is called. After the execution of this "subroutine 3", the process returns to the main routine and proceeds to step 82.

In step 70, it is determined to be NO,
That is, when it is determined that the special lens designed for the L or P size screen is not attached, the process proceeds to step 71 as described above. [Steps 71, 72, 73] Steps 7, 8,
The same operation as 9 is performed. [Step 74] The same judgment as in step 10 is performed. If YES, the process proceeds to step 75. If NO, “subroutine 1” is called, and after execution of this “subroutine 1”, the process returns to the main routine, and step 80 Go to.

If it is determined YES in step 74, that is, if it is determined that backlight correction is not necessary, the process proceeds to step 75 as described above. [Step 75] The focal length information of the photographing lens attached to the camera, which is transmitted to the Ph port of the microcomputer 43, is read, and it is judged whether or not the focal length of the lens is smaller than 28 mm (wide angle), and it is small. If it is determined to be, the process proceeds to step 76, and if not, the process proceeds to step 79. [Step 76] Camera attitude detection switch SWp (39, 4) via the Pg1 and Pg2 ports of the microcomputer 43.
0, 41) is detected. As a result, when the switch SWp is off, it is determined that the posture of the camera is in the horizontal position, and the process proceeds to step 77. On the other hand, when the switch SWp is on, it is determined that the camera is in the vertical position, and the process proceeds to step 80. move on. [Step 77] The same determination as in step 123 is performed. If YES, the process proceeds to step 78, and if NO, the process proceeds to step 80. [Step 78] In this landscape mode, a short-focus lens is attached rather than a wide-angle lens, and in the case of lateral position photography, the horizontal spread of the horizon, horizon, mountain rows, etc. is emphasized,
Moreover, the frequency of so-called panoramic photography that omits extra ground and sky is extremely high. Therefore, similar to the operation of step 124, the shooting screen size and the finder screen are switched to the P size screen. [Step 79] Make the same judgment as in Step 6 above,
If YES, call "Subroutine 2", return to the main routine after execution of "Subroutine 2",
Go to step 80. If NO, the process proceeds directly to step 80. [Step 80] The photometric calculation result obtained in step 73 or the exposure-corrected photometric calculation result for backlighting via “subroutine 1”
The data is output from the port to the display device 62, and the shutter speed and aperture value at that time are displayed. [Step 81] The same determination as in step 12 is performed. If YES, the process proceeds to step 82, and if NO, the process proceeds to step 83. [Step 83] The same operation as that in Step 14 is performed, and upon completion, the flow proceeds to Step 82. [Step 82] The same judgment as in the above step 13 is performed. If YES, the process proceeds to step 84, and if NO, the process returns to step 69.

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the above steps 69 to 82 are repeatedly executed, and the photographing lens is determined based on the distance measurement result. Always moves to the in-focus position, and the shutter speed and aperture value in the selected landscape mode are displayed.

When the release button is changed to the second stroke state during the above process, this is detected in step 82 as described above, and the following step 84 is executed. [Step 84] Similar to step 15, the exposure operation and film feeding are performed. Then, the process proceeds to step 85. [Step 85] Return to step 2 of FIG.

Next, the operation when the close-up mode is selected will be described.

If it is determined NO in steps 2, 16, 16, and 67, and if it is determined in step 86 of FIG. 20 that the mode is close-up mode from the setting mode information transmitted to the Pa port, step 87. Go to. [Steps 87, 88] The same operations as in Steps 3 and 4 are performed. [Step 89] Make the same judgment as in step 5 above,
If NO, the process proceeds to step 90, and if YES, "subroutine 3" is called. After the execution of this "subroutine 3", the process returns to the main routine and proceeds to step 98.

In step 89, it is determined to be NO,
That is, when it is determined that the special lens designed for the L or P size screen is not attached, the process proceeds to step 90 as described above. [Steps 90, 91, 92] Above steps 7, 8,
The same operation as 9 is performed. [Step 93] The same judgment as in the above-mentioned step 10 is performed. If YES, the process proceeds to step 94. If NO, “subroutine 1” is called, and after execution of this “subroutine 1”, the process returns to the main routine and step 96. Go to.

If it is determined YES in step 93, that is, if it is determined that backlight correction is not necessary, the process proceeds to step 94 as described above. [Step 94] The same determination as in step 33 is performed. If YES, the process proceeds to step 95, and if NO, the process proceeds to step 96. [Step 95] In this close-up mode, in order to emphasize the subject by omitting extras, to simplify the screen, and to reduce the adverse effect of strobe light distribution in the periphery of the screen, a wide screen is displayed in the wide area to the periphery and extra subjects are captured. The frequency of shooting on an H or P size screen is extremely low, in which images are easily captured. That is, the optimum shooting screen size is L size. Therefore, similarly to the operation of step 127, the shooting screen size and the finder screen are switched to the L size screen. [Step 96] The result of the photometric calculation performed in the above step 92 or the result of the exposure-corrected photometric calculation for the backlight is passed through "Subroutine 1" to the Pi of the microcomputer 43.
The data is output from the port to the display device 62, and the shutter speed and aperture value at that time are displayed. [Step 97] The same judgment as in step 12 above is performed. If YES, the process proceeds to step 98, and if NO, the process proceeds to step 99. [Step 99] The same operation as that in step 14 is performed, and the process proceeds to step 98 after the end. [Step 98] The same judgment as in the above step 13 is performed. If YES, the process returns to step 100, and if NO, the process returns to step 88.

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the above steps 88 to 98 are repeatedly executed, and the photographing lens is determined based on the distance measurement result. Always moves to the in-focus position, and the shutter speed and aperture value in the selected close-up mode are displayed.

When the release button is changed to the second stroke state during the above process, this is detected in step 98 as described above, and the following step 100 is executed. [Step 100] Similar to step 15, the exposure operation and film feeding are performed. Then, the process proceeds to step 101. [Step 101] Return to step 2 of FIG.

Next, the operation when the sports mode is selected will be described.

In step 2, step 16, step 48, step 67 and step 86, it is determined to be NO,
When it is determined in step 102 of FIG. 21 that the sport mode is set from the setting mode information transmitted to the Pa port, the process proceeds to step 103. Otherwise, it proceeds to step 119 and returns to step 2 of FIG. [Steps 103 and 104] The same operations as in Steps 3 and 4 are performed. [Step 105] Perform the same judgment as in Step 5 above. If NO, proceed to Step 106. If YES, call “Subroutine 3”. After execution of this “Subroutine 3”, return to the main routine and proceed to Step 116.
Go to.

If it is determined NO in step 105, that is, if the special lens designed for the L or P size screen is not mounted, the process proceeds to step 106 as described above. [Steps 106, 107, 108] The same operations as those in Steps 7, 8, 9 are performed. [Step 109] Perform the same judgment as in Step 10 above, and if YES, proceed to Step 110, if NO, call “Subroutine 1”, and after execution of this “Subroutine 1”, return to the main routine 113, and Proceed to 114.

If it is judged YES in step 109, that is, if it is judged that backlight correction is not necessary, the process proceeds to step 110 as described above. [Step 110] The focal length information of the photographing lens attached to the camera, which is transmitted to the Ph port of the microcomputer 43, is read, and the focal length of the lens is 135 mm (telephoto).
If it is larger, the process proceeds to step 111. If not, the process proceeds to step 113. [Step 111] Screen size switching detection switch 1 to see what the current shooting screen size is
The state of No. 5 is confirmed via the ports Pf1 to Pf3 of the microcomputer 43. As a result, if the port Pf1 or Pf3 is at the high level, it indicates that the screen size is P or L size as shown in FIG. 3 or FIG. 5, and therefore the process proceeds to step 112. On the other hand, if the Pf2 port is at high level, it means that the screen size is H size as shown in FIG.
Go to 3. [Step 112] In this sports mode, the subject is mainly a person, animal, vehicle, aircraft, or the like that moves, and the telephoto lens is used very often. Therefore, since it becomes difficult to capture the subject in the screen, the H size, which is the largest screen size, is optimal so that the probability of capturing the subject is increased as much as possible. Therefore, similarly to the operation of step 132, the shooting screen size and the finder screen are switched to the H size, and the process proceeds to step 113. [Step 113] The photometric calculation result obtained in step 108 or the exposure-corrected photometric calculation result for backlighting is output from the Pi port of the microcomputer 43 to the display unit 62 via “subroutine 1”. , At that time, the shutter speed and aperture value are displayed. [Step 114] The same determination as in step 12 above is performed. If YES, the process proceeds to step 116, and if NO, the process proceeds to step 115. [Step 115] The same operation as that in the above Step 14 is performed, and upon completion, the operation proceeds to Step 116. [Step 116] The same determination as in step 13 is performed. If YES, the process proceeds to step 117. If NO, the process returns to step 104.

As described above, when the release button is in the first stroke operation state, the switch SW1 is on and the switch SW2 is off, the steps 104 to 116 are repeatedly executed, and the photographing lens is determined based on the distance measurement result. Always moves to the in-focus position, and the shutter speed and aperture value in the selected sports mode are displayed.

When the release button is changed to the second stroke state during the above process, this is detected in step 116 as described above, and the following step 117 is executed. [Step 117] The exposure operation and the film feeding are performed in the same manner as in Step 15 above. Then, the process proceeds to step 118. [Step 118] Return to step 2 of FIG.

According to this embodiment, in a camera having various exposure modes for photographing a specific subject (for example, portrait mode called image zone, landscape mode, close-up mode, sports mode, etc.) The camera automatically selects the shooting screen size according to the selection, and the defocus amount for multiple subjects is halved so that the aperture value that guarantees the in-focus state of multiple subjects can be automatically determined. In the camera having the depth priority AE mode in which the aperture value is set so that various subjects come within the depth from the defocus amount, and the depth priority AE mode is set, When selected, if you select and input information of two or more points with different subjects, the specific shooting screen size A means for the camera to automatically select, and a means for the camera to automatically select a specific shooting screen size other than the above when the information on the same point on the subject is selected and input more than once, A means for the camera to automatically select the shooting screen size according to the focal length information of the shooting lens or unique lens information (for example, information that the lens is a special lens), and the brightness difference within the same shooting screen is predetermined. When the backlight is detected and the backlight is detected, the camera automatically selects the shooting screen to a screen size other than the screen with the maximum area, and the camera automatically selects the shooting screen size according to the attitude information from the camera attitude detection means. Since the means for automatically changing the screen size of the finder in response to the automatic selection of the photographing screen size is provided, the following effects can be obtained.

A) The screen size is automatically changed according to the exposure mode, the focal length of the photographing lens attached to the camera, or the attitude of the camera, in response to the existence of a screen size that is extremely frequently used. Since it is switched, the photographer looks through the finder every time it shoots to determine whether the current screen size is appropriate, and if it is not suitable, a manual switching operation is performed to switch to the desired screen size. Is eliminated, excellent quick-shooting performance, and never miss a photo opportunity.

B) When a photographic lens designed for a specific screen size is attached, the screen size is automatically switched from the information of the lens, so that there is no forgetting or mistake in switching as in the manual switching. The failure such as a part of the screen disappearing disappears.

C) When shooting a backlit scene affected by a high-brightness subject, the reflection of ghosts and flares is limited, and the quality of photographs (prints) is improved.

D) Since the viewfinder screen size can be switched according to the set shooting screen size, it is easy to determine the composition.

(Modification) In the above embodiment, the fixed screen of the camera is mechanically shielded by driving the screen shielding member by the motor to switch the photographing screen size, but the invention is not limited to this. For example, in a camera using various magnetically recordable films that have already been proposed, the filming screen size information switched as magnetic information is recorded on this film, and a predetermined screen size information is recorded at the time of development. It may be configured to trim to the screen size.

Further, the finder screen is also mechanically shielded by driving the shielding member in conjunction with the switching operation of the photographing screen size. However, a liquid crystal plate having a shielding portion corresponding to each finder screen is used. Alternatively, the viewfinder screen may be displayed by interlocking with the switching operation of the shooting screen size by electrically driving the liquid crystal.

[0103]

As described above, according to the present invention,
The exposure mode setting means detects the exposure mode, determines the photography screen size according to the detection mode, and provides the photography screen size determining means for outputting this information to the photography screen size changing means. In order to automatically determine the aperture value that guarantees the in-focus state together, move the shooting lens to a position where the defocus amount for multiple subjects is halved, and each subject is within the depth from the defocus amount. In the depth-priority AE mode, the aperture value is calculated so as to enter the range, and when the distance measuring information of two or more different points in the photographing screen is input from the distance measuring means, the specific photographing screen is displayed. When the size information is output to the photographing screen size changing means and the distance measurement information at the same point is input more than once, the specific photographing screen size information other than the above is changed. A shooting screen size determining means for outputting to the stage is provided, and information of the shooting lens mounted on the camera is input, the shooting screen size is determined according to the information, and this information is output to the shooting screen size changing means. A shooting screen size determining means is provided, and when backlight detection is performed by the backlight detection means, a size other than the shooting screen size with the maximum area is set as the shooting screen size at this time, and this is changed A shooting screen size determining means for outputting to the means, and a shooting screen size determining means for determining the shooting screen size according to the attitude information of the camera from the attitude detecting means and outputting to the shooting screen size changing means,
Exposure mode selected, information of the shooting lens attached,
Focusing on the fact that there are shooting screen sizes that are extremely frequently used depending on whether the camera is in the vertical or horizontal position when shooting, or whether it is a backlit scene, the shooting screen size is automatically adjusted according to this information. I am trying to change it.

Therefore, it is possible to eliminate the troublesome switching operation of the photographing screen size, to obtain the excellent quick-shooting property, and to prevent the failure of the photograph.

Further, a finder screen size switching means for switching the screen size of the finder is provided in association with the operation of the photographic screen size changing means so that the changed photographic screen size and the finder shooting screen size are always matched. There is.

Therefore, the current photographing screen size can be known by looking through the finder, and the composition can be easily determined.

[Brief description of drawings]

FIG. 1 is a rear view showing a configuration of a main part of a camera with a variable screen size function in an H size shooting screen according to an embodiment of the present invention.

FIG. 2 is a rear view showing the configuration of the main part of the H size finder screen.

FIG. 3 is a rear view showing a configuration of a main part of a P-size shooting screen.

FIG. 4 is a rear view showing the configuration of the main part of the P size finder screen.

FIG. 5 is a rear view showing the configuration of the main part of the L-size shooting screen.

FIG. 6 is a rear view showing the configuration of the main part of the L size finder screen.

FIG. 7 is a top view of the camera similarly showing a shooting mode dial section.

FIG. 8 is a diagram showing a state of the posture detection switch when the posture of the camera is horizontal.

FIG. 9 is a view showing a state of the posture detection switch when the posture of the camera is vertical.

FIG. 10 is a diagram showing a state of the posture detection switch when the posture of the camera is the vertical position opposite to that of FIG. 9;

FIG. 11 is a diagram showing a manner of distance measurement of a certain subject in the depth priority AE mode.

FIG. 12 is a diagram showing a manner of distance measurement of an object different from that in FIG. 11 in the depth priority AE mode.

FIG. 13 is a diagram for explaining switching of a shooting screen size when a backlight scene is shot.

FIG. 14 is a diagram for explaining switching of the shooting screen size when shooting a backlit scene different from that in FIG. 13;

FIG. 15 is a block diagram showing a main configuration of a camera with a variable screen size function according to an embodiment of the present invention.

16 is a flowchart showing a part of the operation of the microcomputer of FIG.

FIG. 17 is a flowchart showing a continuation of the operation of FIG.

FIG. 18 is a flowchart showing a continuation of the operation of FIG.

19 is a flowchart showing a continuation of the operation of FIG.

FIG. 20 is a flowchart showing a continuation of the operation of FIG.

FIG. 21 is a flowchart showing a continuation of the operation of FIG.

FIG. 22 is a flowchart showing the operation of subroutine 1 in FIG. 16 and the like.

FIG. 23 is a flowchart showing the operation of subroutine 2 in FIG. 16 and the like.

FIG. 24 is a flowchart showing an operation of subroutine 3 in FIG. 16 and the like.

[Fig. 25] Fig. 25 is a rear view showing a configuration of a main part of a conventional camera with a variable screen size function when an H size shooting screen is displayed.

FIG. 26 is a rear view showing the configuration of the main part of the P size shooting screen.

FIG. 27 is a rear view showing the configuration of the main part of the L-size shooting screen.

FIG. 28 is a diagram showing a shooting area in the finder when the screen size is switched.

FIG. 29 is a perspective view of a camera when a lens dedicated to P size is attached.

FIG. 30 is a diagram showing a shade when the screen size is H size when a lens dedicated to L size is attached.

FIG. 31 is a diagram showing a shade when the screen size is H size when a lens dedicated to P size is attached.

[Fig. 32] Fig. 32 is a diagram for describing the wraparound of reflected light to the film surface at the time of shooting a backlight scene.

FIG. 33 is a diagram showing a state of a photograph at the time of backlighting.

FIG. 34 is a diagram showing a state of a photograph when it is backlit.

[Explanation of symbols]

1 Fixed screen of camera (H size) 4 Screen size switching motor 11 Tripod lever 12, 13, 14 Shielding lever 15 Screen size change detection switch 16 Fixed frame of finder screen (H size) 17 Finder trifurcation lever 18, 19, 20 Finder shield lever 39, 40, 41 Posture detection switch 42 Shooting mode dial switch 43 Microcomputer 54 Motor driver 62 Display 65 Focus distance information & special lens information detection circuit

Claims (10)

[Claims] 1. A screen size comprising: an exposure mode setting means for setting various exposure modes for shooting a specific subject; and a shooting screen size changing means for changing the shooting screen size according to input information. In the camera with variable function, a photographing screen size determining unit that detects the exposure mode set by the exposure mode setting unit, determines a photographing screen size according to the detection, and outputs this information to the photographing screen size changing unit. A camera with a variable screen size feature. 2. A distance measuring means for measuring the distance to a selected point in a plurality of divided photographing screens, and a photographing screen size changing means for changing the photographing screen size according to input information. In order to automatically determine the aperture value that guarantees the in-focus state for multiple subjects, move the shooting lens to a position where the defocus amount for the multiple subjects is halved. In a camera with a screen size variable function that has at least a depth priority AE mode in which an aperture value such that each subject falls within the depth is used as a shooting aperture, a shooting screen when the depth priority AE mode is selected If two or more different distance measuring information in the above are input from the distance measuring means, the specific photographing screen size information is output to the photographing screen size changing means to measure the same point. A camera with a variable screen size function, which is provided with a photographing screen size determining unit that outputs specific photographing screen size information other than the above to the photographing screen size changing unit when distance information is input twice or more. . 3. In a camera with a variable screen size function equipped with a photographing screen size changing means for changing the photographing screen size according to the inputted information, the information of the photographing lens to be mounted on the camera is inputted to this. A camera with a variable screen size function, characterized in that a shooting screen size determining means is provided for determining a shooting screen size according to the information and outputting this information to the shooting screen size changing means. 4. The camera with a variable screen size function according to claim 3, wherein the information of the taking lens is focal length information. 5. The camera with a variable screen size function according to claim 3, wherein the information of the taking lens is information specific to the lens. 6. A backlight detection unit for detecting a backlight scene when a difference in brightness within a same shooting screen is a predetermined value or more, and shooting for changing a shooting screen size according to input information. In a camera with a screen size changing function equipped with a screen size changing means, when backlight detection is performed by the backlight detection means, a size other than the shooting screen size having the maximum area is set as the shooting screen size at this time. A camera with a variable screen size function, characterized by further comprising a photographing screen size determining means for outputting this to the photographing screen size changing means. 7. A camera with a screen size changing function, which comprises attitude detecting means for detecting the attitude of the camera and photographing screen size changing means for changing the photographing screen size according to input information. A camera with a screen size varying function, characterized in that a shooting screen size determining means for determining a shooting screen size according to camera attitude information from the means and outputting the shooting screen size to the shooting screen size changing means is provided. 8. The finder screen size switching means for switching the screen size of the finder in association with the operation of the photographing screen size changing means. Camera with the described screen size variable function. 9. The photographing screen size changing means is a means for mechanically changing the photographing screen size, according to claim 1, 2, 3, 4, 5, 6, 7, or 8. Camera with variable screen size function. 10. The photographing screen size changing means is means for recording photographing screen size information on a film surface, 1, 2, 3, 4, 5, 6, 7, or 8. Camera with the described screen size variable function.