JPH0572654A - Camera - Google Patents

Abstract

PURPOSE:To decide a picture size after performing trial photographing for only one frame by making it possible to change the picture size until photographing processing for a 1st frame is completed after a cartridge is loaded, and prohibiting that the picture size is changed thereafter and until the photographing processing for all the frames is completed. CONSTITUTION:Only when a film counter indicates '0' or '1', a display 66 on an external display device 59 is actually changed by operating an exposure size changing button. That means, at the time of detecting that a back cover is open, the film counter indicates '0', so that the film counter keeps on indicating '0' from when the film is loaded and until idle feeding is finished. And the photographing size is changed by the interruption of an interruption terminal INI, and a switch is turned on when the film counter indicates '0', and the photographing size can be changed until all the interruption is prohibited. After this, the photographing size is not changed until the back cover is open again and the film counter indicates '0', that means, until the photographing is completed by use of the loaded film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to a camera having a trimming function capable of setting and changing an exposure screen size during photographing.

[0002]

2. Description of the Related Art Conventionally, the screen size of a still camera is full size (24 mm × 36 mm) and half size (1 mm).
The main size was 7 mm x 24 mm, but recently a so-called panorama size (13 mm x 36 mm) has been provided as a new size. The panoramic size has a horizontal dimension of 36 mm
Since it is the same as the full size, there is no need to modify the mechanism for feeding the film one frame. Therefore, by covering the exposure opening for full size by a necessary amount, it is possible to shoot in a panoramic size.

For this purpose, there has already been provided a camera having a movable light-shielding member built therein and configured so as to cover the exposure opening by a necessary amount according to an operation. A schematic configuration of such a camera is shown in FIG. 101 is an optical system for photographing,
Is an opening for exposure and has a size corresponding to the full size. 1
Reference numeral 03 denotes a hole provided on the surface having the exposure opening 102. Reference numerals 104 and 105 denote light-shielding members provided above and below the exposure opening 102, which are rotatable about shafts 104a and 105a, respectively, and which are opened by an unillustrated means.
It is urged to rotate so as to cover the upper and lower portions of 2. 106
Is an operation member, which is slidably supported in the vertical direction in the figure, but is configured to be held at the upper and lower ends of the slide by a click mechanism (not shown), and is at the upper click position in the illustrated state. The operating member 106 includes the operating projection 10
6a, a cam portion 106b that abuts the protrusion 104b of the light shielding member 104, and a protrusion 106c that abuts one end 107b of the lever 107. Reference numeral 107 denotes a lever rotatably supported about 107a, and has one end 107b and the other end 107c that abuts the projection 105b of the light shielding member 105. In the illustrated state, the light-shielding members 104 and 105 are held at the positions retracted from the optical path of the photographing against the urging force by the click force of the operation member 106. If you load the film as it is and shoot, it will be full size. If the photographer slides the operation member 106 downward before loading the film, the light blocking members 104 and 105 follow and rotate leftward and rightward, respectively, and cover the upper and lower portions of the opening 102. If the film is loaded and the image is taken as it is, the panorama size image is obtained.

As described above, the size switching operation member is laid out next to the exposure opening, that is, at a position where it can be operated only before the film is loaded. Only one of the sizes is exposed on one film. To do so. In the lab, when developing a film and performing simultaneous printing, each film can be assigned to a dedicated printing process.

[0005]

However, the above-mentioned conventional example has the following drawbacks.

(A) Even if an attempt is made to change the size of the film after the film has been idly fed to the first frame, it cannot be done. The change at this point is not a problem for the purpose of aligning the size of one film, but if the back cover is opened, the film up to the first frame will be exposed.

(B) Since a camera having a focal plane shutter has a focal plane shutter in front of the exposure opening of the main body, it is not possible to dispose a rotating light blocking member or operating member and its interlocking mechanism as in the conventional example. ..

(C) Since the operating member cannot be seen after the film is loaded, it is impossible to know which size is selected at the time of photographing.

Therefore, it is an object of the present invention to provide a camera of novel construction which eliminates the above mentioned drawbacks.

[0010]

According to the present invention, the setting of the printing range is changed by the operation of the operation member that can be operated even after the film is loaded, and the exposure execution sequence for the first frame is performed. Since the change of the setting of the printing range is prohibited even after the operation member is operated from the start of the operation to the end of the shooting of all frames at least, the above problem can be solved.

[0011]

1 is a schematic perspective view of a camera according to a first embodiment of the present invention. 1 is a main body which is a structural member of the camera, 2
Is an opening for exposure provided in the main body 1 and is 24 mm × 36 mm
The size corresponds to the full size of. Reference numeral 1a is a film guide rail provided on the main body. Reference numeral 3 is a base plate of a vertically running focal plane shutter (hereinafter simply referred to as a shutter), and 4 is a cover of the shutter. The base plate 3 and the cover 4 are provided with exposure openings 3a and 4a, respectively.
And is fixed with a predetermined gap as shown in the figure.
This gap is the running space for the shutter blades, as shown in FIG.
Since is before exposure, the front blade shields the opening from light, but is omitted in the drawing.

Between the cover 4 and the body 1 is usually 0.2-0.
There is only a gap of about 5 mm. This is because it is desirable to bring the focal plane shutter as close to the film as possible, and the mirror 23 for sending the subject image to the finder, which will be described later, is provided between the shutter and the taking lens. The cover 4 has a mask stopper 4 which will be described later.
Two b, 4c, 4d, and 4e are provided.
Reference numerals 7 and 8 denote arms rotatably supported about 7a and 8a, and a rod 9 implanted at one end of the arm 7 and a slit on one end side of the arm 8 are engaged with each other to interlock with each other. To do. A mask 5.6 is rotatably supported by the tip portions 7b and 8b of the arms 7 and 8, respectively. The mask 5.6 includes arms 7, 8 and mask stoppers 4b and 4e.
Has stopped at the position in the figure. The rod 9 is biased by a spring, but its operation is stopped by the lever 24. Reference numeral 10 denotes a shutter lever that charges a shutter mechanism (not shown).
Keeps the shutter charged. One end of the lever 24 is pressed by the shutter lever 10 to prevent its rotation, and further, the shutter lever 10
The tension lever 28 is also locked so as not to rotate even if the lock is released. Reference numeral 11 denotes a motor capable of rotating in the forward and reverse directions and is connected to a gear train including a pinion gear 11a, a sun gear 12, planetary gears 13 and 14, and the like. The planetary gear 13 meshes with the gear 14 only when the motor 11 rotates in the arrow direction (hereinafter referred to as forward rotation), and revolves around the sun gear 12 when the motor 11 rotates in the opposite arrow direction (hereinafter referred to as reverse rotation). And is connected to a feeding mechanism of a film (not shown). The gear 14 includes a worm gear 15 that rotates integrally, and further includes wheel gears 16 and 18
When the motor 11 rotates in the normal direction, the wheel gear 16 rotates in the direction of the arrow in the figure. Reference numeral 17 is a mirror cam which rotates integrally with the wheel gear 16, and 19
Is a charge cam that rotates integrally with the wheel gear 18. In the state shown in the drawing, the cam top portion of the charge cam 19 contacts the charge lever 20, and the shutter is held in the charged state as described above. On the other hand, reference numeral 22 is a mirror receiving plate that supports a mirror 23 for sending a subject image to the above-mentioned finder, and is supported so as to be rotatable around a shaft 22a. Reference numeral 21 denotes a mirror lever that rotates when pressed by the mirror cam 17 and rotates the mirror receiving plate to the right through a pin 22b implanted in the mirror receiving plate 22, but in the figure, the mirror cam 17 and the mirror lever 21 are in contact with each other. Not,
Therefore, the mirror receiving plate 22 is at a position where the subject image is reflected to the finder. Reference numerals 25, 26, and 27 constitute a magnet unit, which is a yoke, a coil, and an armature, respectively. When the coil 26 is energized, the yoke 25
However, the armature 27 is pulled, the armature 27 is rotated counterclockwise, and the tip of the armature 27 rotates the tightening lever 28 clockwise so that the locking of the lever 24 by the tightening lever 28 is released.

FIG. 2 shows an embodiment of the control circuit according to the present invention. Reference numeral 50 denotes a microcomputer, which is connected to a switch and a control unit, which will be described below, through an input port IX, an output port OX, a plurality of input / output ports PX, etc., and each control unit according to a signal input from the input port IX. To control. S1 is a switch which is first turned on when the release button of the camera is pressed, and S2 is a switch which is turned on when the photographing mode switching button of the camera is pressed. S3 is laid out in a position where it can be operated even after the film is loaded, a switch that turns on when the button that switches between panoramic photography and normal photography is pressed, S4 turns on when the back lid is closed, and S5 pops up the built-in flash. And a switch that turns on. S6 is a switch that turns on when the release button is further pressed after S1 is turned on, S7 is a switch that is turned on while the shutter is in the charging completed state, and S8-1 and S8-2 are for pushing the up button and the down button. It is a switch that turns on in conjunction with each other. The up button and the down button are operation members for updating shooting data described later. For example, when shutter priority (Tv priority) is selected as the shooting mode, the up button sets the shutter speed to the high speed side and down. Press the button to shift to the lower speed side, and aperture priority (Av priority)
When is selected, the up button shifts the aperture value to the small aperture side, and the down button shifts it to the open side. S9 is a switch which is interlocked with the winding of the film and is turned on each time one frame is fed. S10 is a switch that turns on when a film cartridge is loaded in the camera,
Reference numeral 11 denotes a switch interlocking with an operation member for switching the camera between the inoperative state and the operating state, which is turned on in the inoperative state. One end of each of the switches S1 to S11 is grounded, and the other end is input to the input ports I1 to I12 of the microcomputer 50. Input ports I1 to I12
Are respectively connected to the + voltage via the resistor R, each input port is pulled up to “H” when the switches S1 to S11 are OFF, and the corresponding input port is “L” when ON.

The input ports I1, I2, I3, I5 are directly connected, I4 is connected to the AND circuit 52 via the differentiating circuit 51, the output of the AND circuit 52 is connected to IN1 at the interrupt terminal of the microcomputer 50, and The input port I11 is connected to the interrupt terminal IN2. Therefore, when the switches S1, S2, S3, S5 are turned on, or the switch S4 is changed from ON to OFF or from OFF to ON, the input signal from the AND circuit 52 to the interrupt terminal IN1 is changed from "H" to "L". And interrupted.
Further, the interrupt terminal IN2 is configured to be interrupted when the input signal changes from "H" to "L" when the switch S11 is turned on.

Reference numeral 53 denotes a photometric control unit including a photometric unit of the camera, which is connected to the microcomputer at the input / output port P1 and receives a signal from the microcomputer 50.
The light that has passed through the taking lens is metered, the result is output to the microcomputer 50, and when the photometric value reaches a predetermined value, a flash stop signal for stopping the flash firing is sent to the flash controller 56. Output. 54
Is a shutter controller, and is a microcomputer 5
It is connected to the input / output port P2 of 0, controls the front curtain and the rear curtain, and outputs a light emission signal for starting the flash emission to the strobe control unit 56 when the traveling of the front curtain is completed.
Reference numeral 55 denotes an aperture control unit for controlling the aperture in the taking lens, which is connected to the microcomputer 50 through the input / output port P3, and allows the aperture to be narrowed down to a predetermined aperture or opened again according to a signal, and the operation end signal to be sent to the microcomputer 50.
Output to. Reference numeral 56 denotes a strobe control unit, which is connected to the microcomputer 50 through an input / output port P4, inputs and outputs zoom information, a charging start signal, and the like, and inputs a light emission permission signal from the output port O1 of the microcomputer 50 to complete a charging completion signal. Is output to the input port I13. A magnet control unit 57 is connected to the output port O2 of the microcomputer and controls the magnet shown in FIG. 1 by a signal from the output port O2. Reference numeral 58 denotes a display control unit of the camera, which is an output port O of the microcomputer 50.
The external display 59 and the in-viewfinder display 60 of the camera are controlled by the signal from 3. 61 is a motor control unit, which is an output port O of the microcomputer 50.
4 and drives the motor 11 of FIG. 1 according to the signal.

FIG. 3 shows an external display 5 of the camera according to the present invention.
9 shows an example. The display unit 59 is made of liquid crystal, and the filled characters and pictures in the drawing indicate that they are currently displayed, and the white characters indicate that they are not currently displayed. 62 is a shutter speed and 63 is an aperture value, which is currently 1/100.
It is 0 seconds and F5,6. Reference numeral 64 is a battery remaining amount display, and 65 is a film counter. Reference numeral 66 denotes a panorama shooting setting / non-setting display, which is currently set to panorama shooting. At this time, switch S3 is turned on once.
If it is set to N, the word "TRM" disappears, which means that it is normal full-size shooting. After that, switch S3 is pressed once.
It turns on and off every N times. 67 is a cartridge mark, which lights up when the switch S10 is turned on. 6
8 is a film sensitivity mark, which is displayed only when this is on 6
2 indicates that the content displayed in 2 is the film sensitivity. For example, when it is detected that the film is loaded and the back lid is closed, the film sensitivity may be displayed by operating the shutter button of the camera until the photometry starts. 69, 70, 71, 72 are shooting modes,
P is program, Tv is shutter speed priority, Av
Indicates that aperture is prioritized, and M indicates that it is manual. Currently in program mode, but switch S2 to 1
Each time it is pressed, the lighting display changes in the order of P → Tv → Av → M →.

Next, the operation of the camera by the control circuit will be described with reference to a flowchart.

FIG. 4 shows an interrupt routine by the interrupt terminal IN1. As described above, the switches S1, 2,
3,5 is ON, or switch S4 is ON to OFF
Or, when it changes from OFF to ON, the interrupt terminal IN
If an interrupt occurs at 1, the further interrupt by the IN1 terminal is prohibited at step # 1. Next, in step # 2, it is determined whether the switch S11 is ON or OFF. If the switch S11 is ON, the camera is held in the inoperative state by the operation member, and the process proceeds to step # 12 without doing anything.
If it is OFF, the process proceeds to step # 3.

In step # 3, the state of the switch S1 is judged, and if it is ON, the release button of the camera is operated. Therefore, the process proceeds to step # 4 described later to enter the photometry routine. If S1 is OFF, the process proceeds to step # 5.
In step # 5, the state of the switch S2 is determined. ON
If so, the process proceeds to step # 14, and the program mode and the shooting mode such as the shutter speed priority are changed one by one in a predetermined order as described above, and then the process proceeds to step # 10. If the switch S2 is OFF, the process proceeds to step # 6.

The switch S4 is a switch interlocking with the opening and closing of the back cover. If it is OFF, it means that the back cover is open. Therefore, the process proceeds to step # 7, the contents of the film counter are reset to 0, and step # Go to 8. If the switch S4 is ON, the back cover is closed, and therefore the process directly proceeds to step # 8. In step # 8, the state of the switch S3 is determined, and if it is ON, it means that the exposure size has been changed (switching between panorama size and normal size), and the process proceeds to step # 15. In step # 15, it is determined whether the contents of the film counter are 0 or 1, or other contents. When the film counter is 0, it means that there is no film loaded in the camera, the back cover is open, the film is being fed up to the first frame of shooting, or it is in the state of being fed. Also, the film counter 1 means that the first frame has been shot after the film has already been sent to the first frame.
It indicates that the film is being fed up to the second frame and is in either state. However, as will be explained later, since the interrupt to the IN1 terminal is prohibited from the beginning of the first frame shooting, the fact that the film counter is 1 in step # 15 means that the film is sent until the first frame of shooting. It will be in a state from being shot until the shooting starts. If the film counter is neither 0 nor 1, the process proceeds directly to step # 10, and if 0 or 1, step # 16
Then, the exposure size is switched between the normal size and the panorama size, and the process proceeds to step # 10. Step #
If the switch S3 is OFF in step 8, the process proceeds to step # 9, and the state of the switch S5 is determined. If the switch S5 is ON, the strobe pops up, so the process proceeds to step # 17 to charge the strobe light emitting capacitor, and the process proceeds to step # 10. Switch S5 is OFF
If so, the process directly proceeds to step # 10. Step 1
At 0, the contents set by the switches S2, S4, S3, and S5 are displayed on the external display 59 and the internal display 60, the output port of the microcomputer 50 is reset at step # 11, and the IN1 is set at step # 12. After enabling the interrupt, the standby state is set in step # 13.

Next, FIG. 5 shows a routine when an interrupt is applied to the interrupt terminal IN2. When the switch 11 is turned on, an interrupt is applied to the IN2 terminal, all interrupts are prohibited in step # 18, the output port of the microcomputer 50 is reset in step # 19, and step # 19.
In step 20, the standby display data is output to the display controller 58, and in step # 21, the standby display is displayed.
With the above operation, each control unit connected to the microcomputer 50 stops its operation even when it is operating,
The interrupt is permitted in step # 22, and the standby state is set in step # 23.

FIG. 6 shows a routine for proceeding to the photometry of step 4 of FIG. In step # 24, the photometric control means 5
A signal permitting photometry is sent to 3 to start photometry. In step # 25, it is determined whether the switch S8-1 or S8-2 is ON. If it is ON, the process proceeds to step # 26, and the shooting data is updated according to the selected shooting mode. For example, the shutter speed is updated in the shutter speed priority mode, the aperture value is updated in the aperture priority mode, and the process proceeds to step # 27. .. In step # 27, the switches S2 and S
The states of 3, S4, and S5 are determined, and the same processing as the flow shown in FIG. 4 is performed. In step # 28, the photometric control unit 53
From step S29, the aperture value and shutter speed at the time of actual exposure are calculated from the result of photometry and film sensitivity, and the result is displayed at step # 30.

In step # 31, it is determined whether or not the switch S1 is ON. If it is ON, the timer is reset in step # 33 (that is, the counting timer is restarted), and the state of the switch S6 is changed in step # 34. If it is determined to be OFF, the process returns to step # 25. Step #
If the switch S1 is OFF in step 31, step # 32
Check if the timer is counting up. If it is not counting up, return to step # 25. If it is counting up, jump to the point indicated by "A" to put the camera in the standby state and step. Go to # 44. Therefore, the state where the switch S1 is turned on and the switch S2 is turned off is maintained, or even when the switch S1 is turned off, steps # 25 to # 30 are repeated while the timer counts a predetermined second.

At step # 34, the switch S6 is turned off.
If it is N, the process proceeds to step # 35 to start the actual exposure operation. In step # 35, all interrupts are prohibited, and in step # 36, exposure is executed according to the value obtained in step # 29. Although the exposure operation will be described in detail later, FIG. 7 shows a state in which the exposure operation is completed. FIG. 7 shows a case where panoramic image capturing is performed. Explaining the difference from FIG. 1, the wheel gears 16 and 18 are rotated by a predetermined amount by a motor, and the mirror cam 17 moves the mirror 23 through the mirror lever 21 to the upper retracted position. To charge cam 19 is charge lever 20
And the shutter lever 10 is released from the charged state. Since the shutter blade (not shown) has been exposed, the front blade retracts from the aperture and the aperture is covered by the rear blade. Since the locking by the tension lever 22 is released and the charge by the shutter lever 10 is also released,
The lever 24 is rotated counterclockwise, and the arms 7 and 8 are rotated clockwise and counterclockwise until the masks 5.6 come into contact with the mask stoppers 4c and 4d, respectively, and shield only the upper and lower portions of the exposure opening 2.

In this state, in step # 37, the motor 11
When is rotated normally, the wheel gear 16 rotates in the direction of the arrow,
The mirror 23 goes down, and the shutter lever 10 is charged again. At step # 38, the switch S7 is turned on,
That is, when the completion of charging is detected, the motor 11 reversely rotates in step # 39. The planet gear 13 is the sun gear 12
The film is revolved around and connected to a film winding system (not shown) to wind the film. In step # 40, the switch S9 turns off.
When N, that is, when the film has been wound up for one frame, the motor 11 is stopped in step # 41, and 1 is added to the number of film counters in step # 42. Next, in step # 43, the strobe is charged, in step # 44 standby display data is created, in step # 45 it is displayed, in step # 46 it is reset with the output port of the microcomputer 50, and in step # 47 an interrupt terminal. Interrupt is permitted, the system goes into standby in step # 48, and returns to the state shown in FIG.

This completes the shooting of one frame, but next,
Differences in the sequence depending on the selected exposure size will be described in order.

FIG. 8 is a detailed flowchart of step # 29 of the flowchart shown in FIG. In step # 49, the exposure amount EV for proper exposure is obtained from the photometric result. If the state of the switch S5 is determined to be ON in step # 50, that is, if the strobe is popped up, the process proceeds to step # 51. In step # 51, it is determined whether or not the panorama mode for exposure in the panorama size is selected, and if it is the panorama mode, step # 52
Go to. In step # 52, it is determined whether the set shutter speed is higher than 1/90 seconds in the shutter speed priority mode or the manual mode. If it is high, the shutter speed is set to 1/90 in step # 57. If not, the process proceeds to step # 53, and the aperture value is set to F5,6. If the switch S5 is OFF in step # 50, that is, if the flash does not pop up, the process proceeds to step # 54. In step # 54, E according to the set shooting mode.
Shutter speed and aperture value are calculated from V value by taking apex formula. That is, the shutter speed and the aperture value are calculated according to the aperture value in the shutter speed priority mode, the shutter speed in the aperture priority mode, and the predetermined program in the program mode, and the process proceeds to step # 30 in FIG. In step # 51,
If Panorama mode is not selected, step #
Go to 55 and set the shutter speed to 1 /
It is determined whether the speed is higher than 60 seconds. If the speed is high, the shutter speed is set to 1/60 seconds in step # 56, and if the speed is low, the process proceeds to step # 53. Therefore, the shutter speed for flash photography is 1/90 seconds or less when panorama mode is selected and 1/6 when full size is selected.
It will be 0 seconds or less.

FIG. 9 is a detailed flowchart of step # 36 shown in FIG. In step # 58, the aperture value is output to the aperture control unit 54 and the aperture is narrowed down. Step # 59
First, the motor 11 rotates in the normal direction to raise the mirror 23 and release the shutter charge. When the operation is completed, the switch S7 turns off and the motor 1
Stop 1 At this time, the blades of the shutter are held only by a control means such as a magnet, which is omitted in FIG. 1, and the lever 2 holding the masks 5 and 6 against the spring force.
4 is locked only by the tightening lever 28.

In step # 60, it is determined whether the panorama mode is set. If the panorama mode is set, step #
At 61, activate the magnet. When the magnet is activated, the armature 27 turns left and the tension lever turns right,
The lock of the lever 24 is released. The arms 7 and 8 respectively rotate right and left by spring force, and the masks 5 and 6 contact the mask stoppers 4c and 4d and stop. If the mode is not the panorama mode, the process proceeds from step # 60 to step # 62. In step # 62, if the switch S5 is determined and is ON, a light emission permission signal is output to the strobe control unit in step # 63, and if the switch S5 is OFF, step # 64
Go to. Therefore, after that, if the switch S5 is OFF (if the strobe is not popped up), even if a light emission signal is output from the shutter control unit 54 to the strobe control unit 56, there is no light emission permission signal, and therefore strobe light emission does not occur. .. In step # 64, the front blade of the shutter is started, and at the same time, the photometry of the light reflected on the film surface is started, and the timing for controlling the shutter speed is also started.

When the front curtain finishes traveling, a light emission signal is output from the shutter control section 54 to the strobe control section 56,
The flash fires only when the flash enable signal is output. In step # 66, the photometry control unit 53 outputs a light emission stop signal to the strobe control unit 56 when the film surface reflection photometry amount reaches a predetermined amount, and the strobe light is stopped. When the shutter speed control time measurement ends in step # 67, the rear blades start and step # 6 in the flowchart of FIG.
Proceed to 37.

Next, the reason why the flash synchronizing shutter speed can be made faster in the panorama mode than in the full size mode will be described with reference to FIG. Figure 1
0 represents the movement of the leading and trailing blades of the shutter over time, the horizontal axis represents the passage of time T toward the left, the vertical axis represents the vertical dimension of the exposure aperture, and L represents the shooting time. The optical axis, l ₁ has a width of 13 mm corresponding to a panorama, and l ₂ has a width of 24 mm corresponding to a full size. S is the movement of the leading blade,
R indicates the movement of the trailing blade during full-size shooting, and R ′ indicates the movement of the trailing blade during panoramic shooting. Assuming that the flash synchronized shutter speed in full-size shooting is 1/60 second, the point S at which the leading blade S and the trailing blade R enter the exposure range l ₂
The interval T1 between 1 and R1 is 1/60 seconds (more precisely, 1/64 seconds corresponds to 15.63 msec). Assuming that the leading blade travels in the exposure area for 9 msec, the fully open time T3 of the shutter capable of emitting the flash light is 15.63.
-9 = 6.63 msec. The strobe is the leading blade S
Receives a light emission signal at a point S2 that exits the full size exposure area l ₂ and normally emits light for a maximum of 4 to 5 msec. Therefore, a full open time of 6.63 msec including a margin is almost appropriate. However, the exposure range for panoramic photography is small, i ₁ . Therefore, the point where the rear blade enters the exposure area is delayed from R1 to R2 by T4 in time. T4 is about 4 msec due to the blade running characteristics. The shutter fully open time at that time is T3 + T4 = 10.63 msec, which is too long for the actual strobe light emission time. Set the flash synchronization shutter speed T2 for panorama shooting to 1 /
90 (To be exact, 1 / 90.51 seconds = 11.05 mse
c), the time until the rear blade R ′ enters the panorama exposure area l ₁ until the point R′2 is T2 + 4 = 15.05 m
sec, and the shutter fully open time T3 is 15.05-
9 = 6.05 msec. This is about 0.58 msec shorter than in full-size shooting, and although R1 and R'2 do not have the exact same timing as shown in the figure, there is a sufficient margin for the flash firing time. Is. It is sufficient if the strength of the mask set between the shutter unit and the main body is about the same as the shutter blades, and the thickness of both the mask and the arm is about 0.1 mm. Therefore, if the mask is provided with partial reliefs such as the rotation support portions 7b and 8b, it is not necessary to change the positional relationship between the main body and the shutter.

Next, the points relating to the present invention in this embodiment will be described.

It is only when the film counter is 0 or 1 that the display 66 of the external display 59 is actually switched by operating the exposure size changing button as shown in FIG. Since the film counter detects that the back cover has been opened and becomes 0, it remains 0 until the film is loaded and the color feeding is completed. In a general camera, the film counter becomes 1 when the color feeding is finished, and the film counter becomes 2 when the first frame is photographed and the film is fed to the next frame. The change of the photographing size is accepted by the interruption of the interruption terminal IN1. Therefore, the film size can be changed until the film counter is 1 and the switch S6 is turned on and all interrupts are prohibited in step # 35 in FIG. After that, the back cover is opened again, and the shooting size cannot be changed until the film counter reaches 0, that is, the shooting of the loaded film is completed.

In the embodiment, the shooting size change is released only by returning the film counter to 0 by opening the back cover, but it is not limited to this as long as shooting of all frames of the film is completed. For example, the film may be released at the same time when the film is rewound, or the film counter may be decremented at the time of rewinding, and when it reaches 0, it may be released regardless of the back cover.

Further, the present invention can be easily applied to a prewind type camera in which all the film is loaded and the film is rewound one frame at a time for shooting. In other words, the acceptance of the shooting size may be permitted until the first frame is shot after the prewind.

[0036]

As described above, in the camera of the present invention, the setting of the printing range is changed by the operation of the operation member that can be operated even after the film is loaded, and the exposure execution sequence for the first frame is set. Since the change of the setting of the printing range is prohibited even if the operation member is operated from at least the end of all frame shooting from the start of, it is not necessary to provide the operation member near the exposure opening of the main body, A camera with a focal plane shutter can also be used. You can also change the shooting size even after film loading and color feeding.

Further, since which size is selected is displayed on the external display, it will not be lost.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a camera mechanism according to the present invention.

FIG. 2 is a diagram showing an example of a circuit for operating the mechanism of FIG.

3 is a diagram showing a display example controlled by the circuit of FIG.

FIG. 4 is a flowchart of an interrupt routine by the circuit of FIG.

5 is a flowchart of another interrupt routine by the circuit of FIG.

FIG. 6 is a flowchart of a photometric routine by the circuit of FIG.

7 is in operation of the mechanism of FIG.

8 is a flowchart of exposure calculation by the circuit of FIG.

9 is a flowchart of exposure execution by the circuit of FIG.

FIG. 10 is a view showing the operation of shutter blades.

FIG. 11 is a view showing a mechanism of a conventional camera with a built-in panoramic mode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Exposure opening of the main body 1 ... Shutter base plate 4 ... Shutter cover 5,6 ... Mask 7,8 ... Mask arm 11 ... Motor 16 ... Wheel gear 17 ... Mirror cam 18 ... Wheel gear 19 ... Charge cam 22 ... Mirror receiving plate 23 ... Mirror 25 ... Yoke 26 ... Coil 27 ... Armature 50 ... Microcomputer 53 ... Photometry control unit 54 ... Shutter control unit 55 ... Aperture control unit 56 ... Strobe control unit 57 ... Magnet control unit 58 ... Display control Unit 61 ... Motor control unit S1 to S11 ... Switch

Claims (2)

[Claims] 1. A screen size setting means for setting a shooting screen size, and a setting change prohibition for prohibiting the setting change by the screen size setting means after the exposure of the first frame is finished after the start of shooting and until the shooting of all frames is finished. A camera having means. 2. The setting screen display means for displaying the setting screen size in response to the setting of the screen size by the screen size setting means is provided.
Camera.