JPH0664287B2 - Camera capable of trimming - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more specifically, it is possible to switch between a normal shooting mode for shooting a normal shooting range and a trimming mode for instructing a trimming range narrower than that. About the camera.

2. Description of the Related Art Conventionally, a camera as described above has already been proposed by Japanese Patent Application Laid-Open No. 54-26721.

Problems to be Solved by the Invention However, when shooting is performed in a trimming mode in such a camera, various inconveniences that lead to deterioration in image quality occur as compared with normal shooting. For example, when shooting is performed in the trimming mode and the frame is printed in the same size as the frame shot in the normal shooting mode, the enlargement magnification of the printer is larger than that in the normal shooting mode. Therefore, blurring of the subject image due to blurring and flare, camera shake, or the like, which is not a problem in the normal shooting mode, becomes noticeable.

Therefore, it is an object of the present invention to provide a camera in which a frame shot in the trimming mode as described above is less likely to be printed with blurring or flare, or blurring.

Means for Solving the Problems In order to achieve the above object, the present invention provides a normal shooting mode and a trimming shooting mode in which a trimming range is instructed to extend a range narrower than the shooting range in the normal shooting mode. In a camera that can switch
A trimming signal output unit that outputs a trimming signal indicating the trimming shooting mode when the trimming shooting mode is selected, a photometric unit that measures the brightness of a subject, a unit that sets an exposure factor according to the measured brightness, and a trimming signal. In accordance with the above, there is provided a limiting unit that limits the setting limit value of the exposure factor on the low brightness side to a value on the higher brightness side than the limit value in the normal shooting mode.

Operation Therefore, according to the present invention, when the trimming mode is selected, the exposure factor is limited, and the inconvenience associated with trimming is eliminated.

That is, when the aperture value is adopted as the exposure factor,
Since the aperture cannot be opened to the open end in normal shooting mode, you can shoot with a deep depth of field, and you can shoot with an optical system that does not allow harmful light to enter easily. The likelihood of flare is reduced.

Further, when the shutter speed is adopted as the exposure factor, the lower limit of the shutter speed is switched to the higher speed, so that it is possible to perform shooting at a shutter speed in which camera shake is less likely to occur. Therefore, the possibility of blurring on the film is reduced.

Further, even when a program including a combination of an aperture value and a shutter speed is adopted as an exposure factor, the possibility of blurring, flare, and blurring similarly decreases.

Examples Hereinafter, examples of the present invention will be described in detail.

First, FIG. 1 is a perspective view showing a camera of an embodiment of the present invention. In FIG. 1, (2) is a camera body, (4) is a shutter release button, (6) is a date selection switch for selecting whether or not the date is printed on the photographic paper at the time of stretching, and (8) is a trimming requirement. A trimming setting button for setting whether or not to set the size and the size thereof, (LCD ₁ ) is a liquid crystal display device that displays various kinds of information regarding shooting, and includes a shutter release button (4), a date selection switch (6),
Trimming setting button (8) and liquid crystal display (LC
D ₁ ) is arranged on the upper surface of the camera body (2) as shown in the top view of FIG. Here, the date selection switch (6) is a slide type, the date is printed at the position shown in the figure, and the date is not printed when it is slid in the (X) direction in the figure. The trimming setting button (8) is configured so that the necessity of trimming and the amount of trimming are changed according to the number of times of pressing, and as will be described later, when a film having a sensitivity less than ISO 400 is loaded, trimming is performed. Setting button (8) is 1
If the camera is not pressed twice, the entire normal shooting range is printed without trimming, and if you press the trimming setting button (8) once, a slightly narrower shooting range than in the normal state is printed. When the button is pressed, the trimming 2 mode of the narrower print range is set, and when the button is pressed three times, the trimming 3 mode of the narrowest print range is set. When the trimming setting button (8) is further pressed, the original normal shooting mode is restored. The summary will be described later.

Further, in FIG. 1, (12) is a flash light emitting unit,
(14) is a viewfinder window, (16) is a viewfinder lighting window, and (18a) and (18b) are a pair of distance measuring windows, respectively. These are shown in the front view of FIG. It is located on the front.

Reference numeral (20) shows a taking lens, and (22) shows a photometric window for automatic exposure control.

FIG. 4 is a sectional view showing a viewfinder optical system and a distance measuring optical system of such a camera. In FIG. 4, the finder optical system comprises an objective lens (L ₁ ) having a negative refractive power and an eyepiece lens (L ₂ ) having a positive refractive power, which are arranged inside the finder window (14). It consists of a reverse Galilean optical system. A semi-transparent mirror (H) is arranged between the objective lens (L ₁ ) and the eyepiece lens (L ₂ ),
The light transmitted through the liquid crystal display device (LCD ₂ ) arranged behind the viewfinder lighting window (16) and reflected by the mirror (M) is guided to the viewfinder. On the other hand, the distance measuring window (1
A distance measuring light emitting diode (24) is arranged behind 8a), and is configured to project infrared light onto a subject through a light projecting lens (L ₃ ). Then, the reflected light from the subject is received by the distance measuring light receiving element (26) via the light receiving lens (L ₄ ) arranged behind the distance measuring window (18b), and the distance from the light receiving state to the subject is changed. To be measured. Since the principle of this distance measurement is already well known, detailed description thereof will be omitted.

Here, the range printed when trimming is selected will be described with reference to FIG. FIG. 5 is a front view showing one screen of a normal 35 mm film. In the normal shooting mode in which trimming is not selected, the length is 24 mm and the width is 3 mm.
The entire 6 mm area is printed. And trimming 1
In the mode, the range shown by (A ₁ ) is printed, in the trimming 2 mode, the range shown by (A ₂ ) is printed, and in the trimming 3 mode, the range shown by (A ₃ ) is printed. Here, the ratio of the print range on the film in the trimming 1, 2, and 3 modes to the normal shooting mode is almost Is set to. Therefore, when a film shot in each mode is stretched to the same size and the focal length f of the taking lens is 35 mm, the same range as that taken by the lens having the focal length shown in Table 1 below is obtained. Will be printed.

Next, FIG. 6 shows a display mode in the finder field by the liquid crystal display device (LCD ₂ ). Liquid crystal display (LC
D ₂ ) is provided with four types of frames (F ₀ ) (F ₁ ) (F ₂ ) (F ₃ ) according to the trimming range,
Any one of them is configured to be selectively displayed depending on the setting state of the trimming setting button (8). That is, in the viewfinder, the frame (F ₀ ) is displayed in the normal shooting mode without trimming,
In trimming 1 mode, the frame (F ₁ ) is displayed,
In trimming 2 mode, the frame (F ₂ ) is displayed,
A frame (F ₃ ) is displayed in the trimming 3 mode and the close-up mode.

Next, with reference to FIG. 7, the relationship between the range photographed and printed by the photographing lens (20) and the photometric range of the photometric system arranged inside the photometric window (22) will be described. In the normal shooting mode in which trimming is not selected in FIG. 7, the shooting lens (20) shoots and prints the range (B ₁ ) on the entire film. Then, in the trimming 3 mode with the smallest print range,
The area (B ₂ ) is printed. Here, the angle of view of the taking lens (20) with respect to the minimum print range (B ₂ ) is α. On the other hand, a photometric optical system including a photometric lens (L ₅ ), a filter (F) and a light receiving element (28) is arranged behind the photometric window (22), and when the angle of view is β, α ≧ β Is set to be According to this structure, the photometric range is always located within the printed range, and the photometric information corresponding to the printed range can be accurately obtained even after trimming.

FIG. 8 is a diagram showing a display mode of the liquid crystal display device (LCD ₁ ) shown in FIG. However, although all the display elements are displayed in the state of FIG. 8, not all the display elements are actually displayed in this way. In FIG. 8, (M ₁ ) (M ₂ ) (M ₃ ) are display elements showing the shooting modes of the respective set cameras, and are displayed in the normal shooting mode without trimming or close-up. Only the element (M ₁ ) is displayed. And
When one of the trimming modes 1, 2, and 3 is selected by operating the trimming setting button (8), only the display element (M ₂ ) is displayed. On the other hand, when the close-up mode is selected, only the display element (M ₃ ) is displayed.

(D ₁ ) (D ₂ ) (D ₃ ) (D ₄ ) (D ₅ ) are display elements displayed to display the trimming range according to the shooting mode. First, in the normal shooting mode, the display element (D ₁ ) indicating that the print range is the widest is displayed. In the trimming mode, the display element (D ₁ ) and either (D ₂ ) (D ₃ ) (D ₄ ) are selectively displayed according to the trimming range. For example, in the case of Trimming 1 mode, which has the widest print range of the trimming,
Display element _{(D 1)} and _{(D 2)} is displayed, when the trimming 2 mode is displayed display element _{(D 1)} and _{(D 3),} in the case of trimming 3 mode display element _{(D 1} )
And (D ₄ ) are displayed. Then, in the case of the close-up photographing mode, the display element (D ₅ ) is displayed.

(DA) is a display element for displaying the date data to be printed, and the date data is not displayed when the printing of the date data is not selected. The display element (DA) may display the date even when the date data is not printed. (FC) is a display element that displays the number of frames taken. Furthermore, (F
E) is a display element for displaying a state in which a film is loaded. In this way, the liquid crystal display device (LCD ₁ )
Displays various shooting modes, the printing date, the number of film shots, the loading status of the film, and the like.

For example, in FIG. 9, the trimming 2 mode is selected, the display elements (M ₂ ) (D ₁ ) (D ₃ ) are displayed, and the date data corresponding to “July 25, 1985” is displayed. Shows the display mode of the liquid crystal display device (LCD ₁ ) in which the image is printed, the number of film shots is “24”, and the film is normally loaded.

Next, FIG. 10 shows a rear view of the camera body (2) with the back cover opened, as viewed from the rear. In FIG. 10, the camera body (2) is provided with a spool chamber (2a) for storing the spool (28) on the right side of the drawing, and a cartridge chamber (2b) for loading a film cartridge on the left side of the drawing. ) Is provided. Therefore, when being wound, the film is moved from the left side to the right side in the drawing. (2c) is a screen frame corresponding to the film at the photographing position, and a code imprinting unit (30) for imprinting various photographing information on the film as a code is arranged at the right end thereof.

The code imprinting unit (30) is the first
As shown in the enlarged view of FIG. 1, one end of 17 optical fibers (30a) is arranged in the longitudinal direction of the figure so as to face the emulsion surface of the film. This large number of optical fibers (3
As shown in the enlarged cross-sectional view of the code imprinting unit (30) of FIG. 12, the multiple ends of 0a) are opposed to 17 light emitting diodes (32a) fixed to the light emitting diode substrate (32). ing.

FIG. 13 shows such a code imprinting unit (3
0) An enlarged view showing a lateral cross section of the periphery. In FIG. 13, (FI) shows the film that has been loaded and wound up, and this film (FI) is the camera back cover (34).
It is crimped to a predetermined position of the screen frame (2c) by a crimping plate (40) to which an appropriate crimping force is given by a pressure plate spring (38) fixed to the pin (36). The code imprinting unit (30) is fixed to the camera body (2) and the light shielding tube (42), and the light shielding plate (44) is provided on the surface facing the optical axis of the taking lens. Here, each light emitting diode (32a) is connected to a light emitting diode drive circuit (LEDR) described later via a flexible substrate (PB), and each light emitting diode (3R) is connected by this light emitting diode drive circuit (LEDR).
The lighting or extinguishing state of 2a) is controlled, and the code to be printed on the film is set.

Therefore, as shown in FIG. 14, a code corresponding to the screen is printed at the right end of the screen when the film is viewed from the back side. That is, the code corresponding to the screen (FL ₁ ) is (CO ₁ ), and the code (C ₁ ) is displayed on the screen (FL ₂ ).
O ₂₎ are compatible, the screen (FL ₃₎ codes (C
O ₃ ) corresponds. In addition, in FIG. 14, (C
R) indicates the range in which the code can be read. The right side of the drawing is the direction of the leading edge of the film, and the left side is the direction of the cartridge.

Here, as described above, the code is composed of a 17-bit digital signal for one screen of the film, and the information represented by each bit will be described with reference to FIG. First, FIG. 15 is a view of the film taken from the back side, as in FIG. 14, and the right side of the drawing is the leading end of the film. And the 17-bit code is
3 bits of trimming information code (Ct), 1 bit of date printability information code (C
s) A 4-bit year information code (Cy), a 4-bit month information code (Cm), and a 5-bit day information code (Cd). Here, the trimming information code (Ct) will be described in detail. The bits of this code (Ct) are sequentially (b ₁ ) (b ₂ ) (b) from the top of the figure.
₃ ), the relationship between the set shooting state and the signal of each bit is as shown in Table 2.

Here, "1" indicates that the corresponding light emitting diode of the bit is turned on, and "0" indicates that the corresponding light emitting diode of the bit is turned off.

The date printability information code (Cs) is "1" when the date is printed and "0" when the date is not printed. The year information code (Cy), the month information code (Cm), and the day information code (Cd) are used by converting the date data into digital binary numbers.

Next, the electric circuit of the camera of this embodiment will be described with reference to the circuit diagram of FIG. In FIG. 16, (S ₁ )
Is a photometric switch that is closed by pressing the shutter release button (4) shown in FIG. 1 in the first step, and (S ₂ ) is a release switch that is closed by pressing the second step.
₃ ) is a key switch which is opened / closed in conjunction with the trimming setting button (8) shown in FIG. 1, (S ₄ ) is a winding switch which is closed according to the shutter release and is opened when the film winding is completed, and (S ₄ ) ₅ ) is a back cover switch that is opened when the back cover of the camera is closed and closed when opened,
(S ₆ ) is a film detection switch which is opened when the film is loaded and wound up and is closed when the film is not loaded, and (S ₇ ) is a film detection switch which is closed at the beginning of the shutter release operation. A count switch (S ₈ ) which is opened when the charging of the date is completed is interlocked with the date selection switch (6) shown in FIG. 1 and is closed when the date is printed and opened when the date is not printed. It is a selection switch.

The switches (S ₁ ) to (S ₄ ) are start switches, and are connected to an interrupt terminal (INT) of a control microcomputer (hereinafter, abbreviated as control microcomputer) (CMC) via a NAND gate (NA). Together with its input terminals (PI ₁ ) (PI ₂ ) (PI ₃ ) (PI ₄ ).
Is also directly connected to. Here, control microcomputer (CM
The interrupt to C) is triggered by the rise of the input to the interrupt terminal (INT). The switch (S ₅ ) is input to the NAND gate (NA) via a differentiating circuit including a capacitor (C ₂ ) and a resistor (R ₃ ). This is to set the count value of the film counter to "0" when the back cover of the camera is opened. Further, the switches (S ₅ ) to (S ₇ ) are control microcomputers (CM
C) input terminals (PI ₅ ) (PI ₆ ) (PI ₈ ) respectively. In addition, each switch (S ₁ ) to (S
₇ ) are respectively connected to the power supply terminal (E ₁ ) via pull-up resistors.

(E) is a power supply battery for the camera, the output of which is input to the control microcomputer (CMC) via a stabilizing circuit composed of a diode (D ₂ ) and a capacitor (C ₃ ). Here, for a circuit that is liable to malfunction due to voltage fluctuation, the power supply terminal (E ₁ ) stabilized by the stabilizing circuit is used.
Power is supplied from the power supply battery (E) to the other circuits.

(FL) is a flash circuit including a flash discharge tube for flash photography and its control circuit.
The signal from the output terminal (PO ₇ ) of MC) activates the booster circuit that applies a high voltage to the flash emission main capacitor, and the signal from the output terminal (PO ₈ ) starts flash emission. Further, when the charging voltage of the main capacitor reaches a predetermined value, a charging completion signal is sent via the input terminal (PI ₇ ) to the control microcomputer (C
MC).

(MD) is a motor drive circuit for controlling the film winding motor (M), and the motor (M) is driven by a signal from the output terminal (PO ₅ ) of the control microcomputer (CMC) to wind the film. , Output terminal (P
The drive is braked by a signal from O ₆ ).

(CAS) is a film sensitivity reading switch that reads information about film sensitivity stored in advance in the film cartridge loaded in the camera and sets the open / closed state according to the information. The film sensitivity information of is converted into an analog signal by a D / A converter (D / A). Then, the analog film sensitivity signal is input to a photometric circuit including a photodiode (PD), an operational amplifier (OP), and a logarithmic compression diode (D ₁ ) and added to the photometric signal. The output of this photometric circuit is therefore a photometric signal obtained by adding the film sensitivity signal, and this signal is input to the base of the transistor (TR ₁ ) via the buffer (B). Then, the signal is a transistor (T
It is logarithmically expanded by a logarithmic expansion circuit composed of R ₁ ) and a capacitor (C ₁ ). Here, the charge voltage of the capacitor (C ₁ ) is compared with a predetermined voltage E ₂ by the comparator (CN), and when the charge voltage of the capacitor (C ₁ ) becomes equal to or lower than the predetermined voltage E ₂ , the transistor (TR ₅ ) The shutter magnet (SMg) is demagnetized and the shutter is closed. Transistor (TR ₂ ) (T
R ₃ ) is controlled by the output terminal (PO ₄ ) of the control microcomputer (CMC), and the shutter magnet (S 4
This is for controlling the timing of the excitation of Mg) and the logarithmic expansion. Further, the transistor (TR ₄ ) is controlled by the output terminal (PO ₃ ) of the control microcomputer (CMC) to rapidly charge the capacitor (C ₁ ) and open the aperture as described later according to the trimmed range. This is for changing the limit value and the low speed side limit value of the shutter speed.

The output of the photometric circuit, which is the photometric signal to which the film sensitivity signal is added, is input to the A / D converter (A / D) and converted into a digital signal, and then input terminal (PIAD).
It is input to the control microcomputer (CMC) via. Furthermore,
The digital signal corresponding to the film sensitivity from the switch (CAS) is directly input to the control microcomputer (CMC) from the input terminal (PIDX) of the control microcomputer (CMC) and also to the display microcomputer (DMC) described later. To be done.

(DMC) is a liquid crystal display (LCD ₁ ) on the top of the camera.
And a display microcomputer (hereinafter, abbreviated as a display microcomputer) that controls the display of the liquid crystal display device (LCD ₂ ) in the finder field and controls the code imprinted on the film. This display microcomputer (DM
C) is supplied with power through the power supply terminal (E ₁ ), and the date print selection switch (S ₈ ) has its input terminal (Pi ₁ ).
It is connected to the. Then, an interrupt is applied by a signal to the interrupt terminals (int ₁ ) (int ₂ ) connected to the output terminals (PO ₁₁ ) (PO ₁₂ ) of the control microcomputer (CMC). Here, the interrupt to the interrupt terminal (int ₁ ) is caused by the liquid crystal display device (LCD ₁ ).
It takes when changing the display of (LCD ₂ ), while the interruption to the interruption terminal (int ₂ ) is made when the code is printed on the film.

Further, the display microcomputer (DMC) receives a signal regarding the shooting mode from the control microcomputer (CMC) at the output terminal (P
OD) and an input terminal (PiD). Further, as described above, a signal relating to film sensitivity is input to the input terminal (PiDX). In addition, it has a built-in clock mechanism to determine the date printed on the film.

The display microcomputer (DMC) controls the liquid crystal display device (LCD ₁ ) on the top surface of the camera and the liquid crystal display device (LCD ₂ ) for finder display through the liquid crystal drive circuit (LCDR). . Therefore, from the display microcomputer (DMC) to the liquid crystal drive circuit (LCDR),
A signal for shooting mode, a signal for date, a signal for presence / absence of film, a signal for winding film, a signal for printing date or not, etc. are transmitted, and the liquid crystal drive circuit (LCDR) latches these display data. . Further, the display microcomputer (DMC) sets the ON / OFF state of a large number of light emitting diodes (32a) for code imprinting via the light emitting diode drive circuit (LEDR). Here, the light emission time of each light emitting diode (32a) is changed according to the film sensitivity signal input to the input terminal (PiDX).

(AF) is an automatic focus adjustment circuit that automatically measures the distance to the subject and adjusts the focus of the taking lens according to the result, and is supplied with power from the power supply terminal (E ₁ ). Then, the automatic focus adjustment circuit (AF) starts the automatic focus adjustment operation by the signal from the output terminal (PO ₁ ) of the control microcomputer (CMC), and the detected subject distance is 4
Input terminal (PIAF) as a bit digital signal
Is input from the control microcomputer (CMC). Then, the output terminal (PO ₂ ) of the control microcomputer (CMC) becomes “H” when the camera is set to the close-up mode, and all the bits of the distance signal relating to the subject distance are set to “H” to force the distance signal. The signal indicating the closest position. Therefore, at this time, the taking lens is set to the closest state. (LMg) is a lens stop magnet, which is demagnetized when the distance signal and a signal relating to the lens extension amount coincide with each other and stops the extension of the photographing lens, as will be described later.

(RMg) is a release magnet for starting the lens extension, which is an output terminal (PO) of the control microcomputer (CMC).
₁₀ ) It is controlled by the re-signal, and after being excited for a certain period of time, it is demagnetized to release the locking of the taking lens,
Start extending the taking lens.

Next, FIG. 17 shows a more detailed structure of the automatic focusing circuit (AF). In FIG. 17, (DD) is a distance detection circuit which is activated by a signal from the output terminal (PO ₁ ) of the control microcomputer (CMC) and measures the distance to the subject. The optical system is shown in FIG. The subject distance detected by the distance detection circuit (DD) is output as a 4-bit digital signal, and the signal of each bit is input to the comparator (CON) via the OR circuit and also from the input terminal (PIAF). It is also input to the control microcomputer (CMC). The output terminal (PO ₂ ) of the control microcomputer (CMC) is connected to all the other input terminals of the OR circuit. Therefore, when the close-up mode is selected, the comparator (CO 2
The distance signal input to N) is a signal indicating the closest position where all bits are "H" regardless of the output signal of the distance detection circuit (DD).

On the other hand, (EC) is an encoder that outputs a pulse according to the amount of extension of the taking lens, and the output pulse of the encoder (EC) is the output terminal (P) of the control microcomputer (CMC).
Counter (CU) reset by the signal of O ₁ )
Counted by. Then, the count value and the distance signal are compared by a comparator (CON),
When both signals match each other, the comparator (CON) outputs an output to demagnetize the lens stop magnet (LMg) to stop the movement of the taking lens at a position corresponding to the distance signal.

Here, in the camera capable of trimming according to the present invention, when the print range on the film surface is reduced, as in the trimming 3 mode, the trimming is performed up to the same size as in the normal photographing mode without trimming. When you stretch, the enlargement ratio increases. Therefore, blurs and flares that were not noticeable in the normal shooting mode become noticeable. Therefore, in the camera of the present embodiment, the minimum aperture value (that is, the aperture open side limit value) and the shutter speed low speed side limit value are changed according to the print range, and the depth of field is increased when trimming is performed. At the same time, the shutter speed is increased so that camera shake is less likely to occur. In this embodiment, since the lens shutter that also serves as the diaphragm is used, the shutter speed increases as the minimum diaphragm value increases, but the invention is not limited to this. According to the above, only the minimum aperture value or only the limit shutter speed may be changed.

Table 3 shows the shooting mode, the minimum aperture value, and the low-speed limit shutter speed in this embodiment.

Here, Avmax is the minimum aperture value, and Tvmin is the limit shutter speed on the low speed side. This is shown in FIG. In FIG. 18, the vertical axis represents the aperture value and the horizontal axis represents the time from when the shutter starts to open. In the normal shooting mode or the trimming 1 mode, the aperture (F) is displayed as shown in (A).
(Value) 2.8 and shutter speed 1/30, the aperture can be opened and the shutter speed can be reduced. In the trimming 3 mode, as shown in (B), it is possible to open the aperture or reduce the shutter speed only up to the combination of the aperture (F value) 5.6 and the shutter speed 1/60. Furthermore, in the close-up mode, it is not possible to set a combination of aperture value (F value) 16 and shutter speed 1/1000. Then, when proper exposure cannot be obtained by the combination of the limited aperture and shutter speed as described above, the flash is automatically emitted. Then, as shown in the lower time chart of FIG. 18, for example, in the case of the trimming 2 mode, when the aperture (F value) is 5.6 and the exposure is insufficient at the shutter speed of 1/60, the automatic focusing circuit (AF) detects At the time point T ₁ when the shutter that also serves as the aperture is opened up to the aperture (F value) 8 calculated by the distance signal, a signal is issued from the output terminal (PO ₈ ) of the control microcomputer (CMC) and the flash emission starts. Then, a signal is issued from the output terminal (PO ₄ ) at time T ₂ when the shutter is opened to the aperture (F value) 5.6, and the closing operation of the lens shutter is started.

Here, in this embodiment, the exposure value Ev for switching to flash emission is also configured to be changed according to the shooting mode. Table 4 shows the relationship between this shooting mode and the exposure value that can be switched to flash emission (this is referred to as exposure value Evc).

Here, the exposure value Ev (or Evc) is the subject brightness Bv, the film sensitivity Sv, and the film sensitivity Sv in the apex calculation.
When the aperture value is Av and the shutter speed value is Tv, Ev (or Evc) = Bv + Sv = Av + Tv is defined.

FIG. 19 shows the relationship between the aperture value and the shutter speed value when switching to this flash emission. In FIG. 19, the vertical axis represents the aperture value and the horizontal axis represents the shutter speed value. In the normal shooting mode without trimming and the trimming 1 mode, the flash is used when the exposure value Ev is 8 or more as in (Da). Trimming 2 though not emitting light
In the mode, the flash is not emitted only when the exposure value Ev is 10 or more as in (Ea). Further, in the case of trimming 3 mode, the exposure value Ev as shown in (Fa)
Does not fire the flash only when is 12 or more,
In close-up mode, exposure value E as shown
The flash is emitted only when v is 18 or more. This is to make the diaphragm as small as possible to deepen the depth of field when the magnification at the time of stretching is large.

Next, a control microcomputer (CM
The operation C) will be described with reference to FIG. FIG. 20 is a flow chart showing the operation of the control microcomputer (CMC) of the camera of this embodiment shown in FIG. Second
In FIG. 0, the circuit is reset by a power-on reset when the battery is installed, and then step #
When 0, all the input / output ports and memory of the control microcomputer (CMC) are initialized. Here, the control microcomputer (C
All output terminals except the output terminal (PO ₁₀ ) of MC) are initially set to output “L”, and the shooting mode is set to the normal shooting mode in which trimming and close-up are not performed. Then proceed to step # 1,
Each port and each flag of the control microcomputer (CMC) are initialized. Then, in step # 2, the control microcomputer (C
MC) output terminal (PO ₇ ) signal is raised,
The boost circuit of the flash circuit (FL) is activated. Next, in step # 3, an external interrupt to the interrupt terminal (INT) of the control microcomputer (CMC) is permitted, and in step # 4, the normal stop state is set.

The control microcomputer (CM) is pressed by pressing the shutter release button (4), the trimming setting button (8), film winding, or opening and closing the back cover.
When an external interrupt is applied to the interrupt terminal (INT) of C), other external interrupts are prohibited in step # 5 and the process proceeds to step # 6. In step # 6 (the following steps are omitted), the input terminal (P
The open / closed state of the winding switch (S ₄ ) connected to I ₄ ) is detected, and the switch (S ₄ ) is opened (O
(FF) If film winding is completed, proceed to # 7 and switch from the input terminal (PIDX) to the switch (CAS).
Enter the DX code information regarding the film speed of.
Then, in # 8, information regarding the shooting mode (trimming size) is input from the state of the input terminal (PI ₃ ) to which the key switch (S ₃ ) interlocking with the trimming setting button (8) is connected. The details will be described later.

Next, in # 9, the open / closed state of the back cover switch (S ₅ ) is detected from the input terminal (PI ₅ ), and the back cover is opened and the back cover switch (S ₅ ) is closed. If it is ON, the process proceeds to # 10 and the count value of the film counter for counting the number of filmed images is set to "0". #
When the back cover is closed at 9 and the back cover switch (S ₅ ) is opened (when OFF), # 1 is passed without passing through # 10.
Proceed to 1. In # 11, after the control microcomputer (CMC) interrupts the display microcomputer (DMC) from the output terminal (PO ₁₁ ) for display rewriting, the information necessary for display is transmitted, and the liquid crystal display device (LCD ₁ ) (LCD
₂ ) is displayed.

Then, the photometric switch which is linked from the input terminal (PI ₁₎ at # 12 on the shutter release button _{(4) (S} 1)
If the open / closed state is detected and the photometric switch (S ₁ ) is open (OFF), the process returns to # 1, and the normal stop state of # 4 is entered. If the photometric switch (S ₁ ) is closed (ON), the signal of the output terminal (PO ₇ ) is lowered at # 13 to stop the boosting of the flash circuit (FL).
Then, in # 14, the automatic focusing circuit (AF) is operated by the start signal from the output terminal (PO ₁ ) of the control microcomputer (CMC), and in # 15, the input terminal (PI).
Closing state of the release switch ₂₎ is interlocked with the shutter release button (4) (S ₂₎ is detected. Here, if the release switch (S ₂ ) is open (OFF), the process returns to # 12 and the operations from # 12 to # 15 are repeated, and the shutter release button (4) is pressed to the second step and the release switch (4) is pressed. Wait for (S ₂ ) to close. If the closing of the release switch (S ₂ ) is detected in # 15, the shutter release operation from # 16 described below is started.

On the other hand, when it is detected that the winding switch (S ₄ ) is closed (ON) in # 6, it means that the winding of the film is not completed yet. ) Is stopped and the winding routine from # 39 is started. In step # 39, the motor drive circuit (MD) is driven by the signal from the output terminal (PO ₅ ) of the control microcomputer (CMC) to activate the film winding motor (M) and start film winding. Then, to detect the detection to the completion of the film winding closed state of the hoisting step # 40 switch (S _4), wound up by winding the film is completed switch (S ₄₎
The motor (M) is driven until is opened (OFF). Open the winding switch (S ₄ ) at # 40 (OF
When F) is detected, the rotation of the motor (M) is stopped at # 41 to stop the film winding, and the process proceeds to # 42.

In # 42, the input terminal (PI of the control microcomputer (CMC)
Detecting the open or closed state of the film sensing switch from ₆₎ (S _6), if the film is not loaded film sensing switch (S ₆₎ is long as it is closed (ON), the information necessary for the display in # 45 Is transmitted from the control microcomputer (CMC) to the display microcomputer (DMC), the process returns to step # 1, and the normal stop state is entered in step # 4. In # 42, the film is wound and the film detection switch (S ₆ ) is opened (OF
If F) is detected, the process goes to # 43 and the open / closed state of the back cover switch (S ₅ ) is detected. When the back cover is opened and the back cover switch (S ₅ ) is closed (ON) at # 43, the process proceeds to # 45 where the information necessary for display is sent from the control microcomputer (CMC) to the display microcomputer. (DM
C), the process returns to # 1, and the normal stop state occurs in # 4. Further, if the back cover is closed and the back cover switch (S ₅ ) is opened (OFF) at # 43, the process proceeds to # 44 and the count value of the film counter is increased by “1”, and then # 45. Then, the information necessary for display is transmitted from the control microcomputer (CMC) to the display microcomputer (DMC), the process returns to step # 1, and the normal stop state is entered at step # 4. That is, with such a configuration, the film counter does not count up when the back cover of the camera is opened or when no film is loaded.

Next, the release routine from # 16 will be described. In step # 16, first, a photometric signal in consideration of film sensitivity is input to the control microcomputer (CMC) from the A / D converter (A / D) via the input terminal (PIAD). Therefore, this photometric signal is defined as photometric data Evm. And
In # 17, in the camera of this embodiment, as shown in FIG. 19, the exposure value E is switched to the flash according to the photographing mode.
Since vc is different, the exposure value Evc that can be switched according to the set shooting mode is read from the ROM. And #
In 18, the photometric data Evm is compared with the exposure value Evc that can be switched to flash photography, and if Evm> Evc, the process proceeds to # 25 described later. On the other hand, if Evm> Evc is not true, it means that the photometric data is lower than the exposure value Evc for switching to flash photography.
C) Input terminal (PI ₇ ) to flash circuit (FL)
It is determined whether or not the main capacitor for flash emission has been charged. Then, if this charging is completed, the process proceeds to step # 20 and the flash photographing flag for instructing the flash photographing is set. If this charging is not completed yet, the process returns to # 1 and waits for the completion of this charging in # 4.

In # 21, it is determined whether or not the photographing mode is set to the close-up mode. If not in the close-up mode, in # 23, the automatic focusing circuit (AF) to the control microcomputer (CMC) input terminal (PIAF). A signal relating to the subject distance is input via. On the other hand, if it is determined in # 21 that the close-up mode is set, the process proceeds to # 22, in which the “H” signal is output from the output terminal (PO ₂ ) of the control microcomputer (CMC) to the automatic focusing circuit ( AF) to force the subject distance signal into a signal corresponding to the closest distance. Then, in step # 23, the control microcomputer (CMC) is similarly operated from the automatic focus control circuit (AF).
A signal relating to the subject distance is input to the input terminal (PIAF).

In # 24, the control microcomputer (CMC) is connected to the terminal (PIA
The value corresponding to the subject distance signal input from F) is stored in the ROM.
It is read from and is set in the light emission timing timer provided inside the control microcomputer (CMC). this is,
This is because when flash photography is performed, the aperture value is determined by the flashmatic mechanism according to the subject distance, and the flash emission timing is determined as shown in FIG. 18 according to the aperture value. Then, in # 25, the control microcomputer (CMC) stores the value according to the photographing mode in the ROM.
And set it to the exposure limit timer. This is because the minimum aperture value and the minimum shutter speed are limited according to the shooting mode in this embodiment.

In # 26, the control microcomputer (CMC) output terminal (PO
_An imprinting signal is output from ₁₁ ), and the information of each code is imprinted outside the screen of the film depending on the lighting / extinguishing state of the light emitting diode (32a) corresponding to each code.
Then, in # 27, the shutter magnet (SMg) is excited by the rise of the signal from the output terminal (PO ₄ ) of the control microcomputer (CMC), and the release magnet (RMg) is generated by the signal from the output terminal (PO ₁₀ ). Is activated and the photographing lens is extended after a certain time. Then, in # 28, the open / closed state of the count switch (S ₇ ) is detected from the input terminal (PI ₈ ) of the control microcomputer (CMC), and the count switch (S ₈ ) is detected.
Wait for ₇ ) to close. Here, when the count switch (S ₇ ) is closed at the beginning of the shutter release operation, the process proceeds to # 29, and the integration of the exposure amount is started. Here, the photometric system of the present embodiment has a sub diaphragm whose aperture diameter changes according to the amount of light transmitted through the lens shutter, and the charging of the capacitor (C ₁ ) is started by the start of integration of the exposure amount.

In # 30, it is determined whether or not the flash photographing flag for instructing the flash photographing is set, and if the flash photographing flag is set, the process proceeds to # 31 to start the above-mentioned light emission timing timer, Allow the timer interrupt and proceed to # 32. If the flash photographing flag is not set in # 30, the process directly proceeds to # 32. Then, in # 32, the exposure limiting timer whose timer time is set in advance according to the proper exposure amount is started, and in # 33, it is continuously determined whether or not this timer overflows.
Here, in this embodiment, since the lens shutter that also serves as the aperture and the shutter is used, the aperture value and the shutter speed value are set at the same time by one exposure limiting timer. It may be configured to be controlled separately so that the combination with and can be variously changed.

When the exposure limit timer overflow is detected in # 33, the process proceeds to # 34 and the control microcomputer (C
MC) output terminal (PO ₃ ) signal rises, the transistor (TR ₄ ) becomes conductive, the shutter magnet (SMg) is forcibly degaussed, and the shutter that also serves as the diaphragm is closed to end the exposure. Then, after waiting for a predetermined time until the shutter is completely closed in # 35, the process returns to the winding routine from # 39.

Here, FIG. 21 shows the routine of the timer interrupt of # 31. First, when the timer interrupt occurs, the timer interrupt is prohibited in # 36, and the output terminal (PO ₈ ) of the control microcomputer (CMC) is output in # 37. Signal rises, a flash light emission signal is emitted, the flash light is emitted, and the process returns to the original step.

Next, the operation of step # 8 in FIG. 20 is shown in more detail in FIG. In FIG. 22, first, # 8-
1 detects the open / closed state of the trimming key switch (S ₃ ), and if the key switch (S ₃ ) is closed (O
N), proceed to # 8-2, change the trimming mode register by one stage, and proceed to # 8-3. If the trimming key switch (S ₃ ) is opened in # 8-1, the process proceeds to # 8-3 without going through # 8-2. In # 8-3, whether or not the film sensitivity is ISO 1000 or higher is determined from the sensitivity of the loaded film input from the switch (CAS) to the input terminal (PIDX). And if the sensitivity of the loaded film is ISO100
If 0 or more, the process proceeds to # 8-4, and it is determined whether the trimming 2 mode or less is performed. If the trimming 2 mode or less is determined, the normal shooting mode without trimming is changed in # 8-5.

On the other hand, the sensitivity of the film loaded in # 8-3 is IS
If it is judged to be O1000 or less, the process proceeds to # 8-6 and it is judged whether or not the sensitivity of the film is ISO400 or more. And if it is ISO400 or more, # 8
After advancing to -7, it is judged whether or not the trimming mode is not more than 3 modes. If the trimming mode is 3 modes or less, the normal photographing mode without trimming is returned at # 8-8. # 8-6, if the film speed is not ISO 400 or higher, and # 8
If the trimming mode is not lower than the trimming 3 mode in -7, the photographing mode is not particularly changed.

Therefore, according to the present embodiment, as shown in FIG. 23, when the sensitivity of the loaded film is less than ISO 400, the normal shooting mode is changed to the trimming 1 mode each time the trimming setting button (8) is pressed. The trimming 1 mode is changed to the trimming 2 mode, the trimming 2 mode is changed to the trimming 3 mode, the trimming 3 mode is changed to the close-up mode, and the close-up mode is changed to the normal photographing mode. In the case of less than, if the trimming setting button (8) is pressed from the trimming 2 mode, the normal photographing mode is restored and the trimming 3 mode and the close-up mode are not set. Further, when a high-sensitivity film of ISO 1000 or more is used, when the trimming setting button (8) is pressed from the trimming 1 mode, the normal photographing mode is returned, and the trimming 2, 3 and close-up modes are not set. This is because the higher the sensitivity of the film, the coarser the particles, and therefore the trimming shooting and close-up shooting that require a large enlargement magnification become less preferable as the film sensitivity becomes higher. The limit of trimming is changed accordingly.

Next, the operation of the display microcomputer (DMC) of this embodiment will be described with reference to the flowcharts of FIGS. 24 to 26. First, the display microcomputer (DMC) is
At 46, all I / O ports and memory are initialized. For example, the clock mechanism built in the display microcomputer (DMC) is initially set to "January 1, 1985", the shooting mode is set to the normal shooting mode, and the count value of the film counter is set to "0". . Next, in # 47, the stored contents of the data necessary for display and imprinting on the film are decoded. Then, in # 48, this data is transmitted to the liquid crystal drive circuit (LCDR), and the necessary information is displayed on the liquid crystal display devices (LCD ₁ ) (LCD ₂ ). Then, all interrupts are permitted in # 49, and the normal stop state is entered in # 50.

FIG. 25 is a flow chart showing the timer interruption to the display microcomputer (DMC), and the timer interruption is configured to take every second. First,
When the timer interrupt occurs, the calendar operation is performed based on the clock mechanism built in the display microcomputer (DMC) in # 51, the calculated data is decoded in # 52, and the liquid crystal drive circuit (LCDR) in # 53. Is output to change the display, and the process returns to the original step at # 54.

Further, FIG. 26 is a flowchart showing an interrupt for rewriting the display and an interrupt for copying the code on the film. First, when an input signal to the interrupt terminal (int ₁ ) of the display microcomputer (DMC) rises and an interrupt occurs, the timer interrupt shown in FIG. 25 is prohibited at # 55. If a timer interrupt is issued after # 55, it is stored in memory and executed immediately after the timer interrupt is permitted. Then, in # 56, the display value such as the count value of the film counter or the shooting mode is input from the input terminal (PiD), the data and the date data are decoded in # 57, and the decoded data is decoded in # 58. The data is output to the liquid crystal drive circuit (LCDR) to change the display of the liquid crystal display device (LCD ₁ ) (LCD ₂ ), the timer interrupt is permitted in # 59, and the process returns to the original step.

On the other hand, the interrupt terminal of the display microcomputer (DMC) (in
When the input signal to t ₂ ) rises and an interrupt occurs,
In # 61, the timer interrupt shown in FIG. 25 is disabled, and #
At 62, the open / closed state of the date print selection switch (S ₈ ) connected to the input terminal (pi ₁ ) is detected. And
If this date print selection switch (S ₈₎ and are open date print is not selected, # 63
Then, the data corresponding to the code for prohibiting the printing of the date is decoded and the process proceeds to # 65. On the other hand, if the date print selection switch (S ₈ ) is closed and the printing of the date is selected in # 62, the data corresponding to the date to be printed is decoded in # 64 and the process proceeds to # 65. .

In # 65, the sensitivity of the loaded film is read from the input terminal (piDX) connected to the switch (CAS), and in # 66, the code imprinting time (that is, the light emitting diode ( 32
The light emission time of a) is determined and the code imprinting is started in # 67. Then, when the imprinting time determined in # 68 is counted, the imprinting is ended in # 69 and the admission timer interrupt is permitted in # 59.

Next, a configuration of an automatic printer included in the system of the present embodiment, which automatically performs a printing operation of printing a film photographed by the camera of the present embodiment on photographic paper, will be described.
Shown in the figure. In FIG. 27, (LA) is a printing lamp, (CF) is a color filter for color balance adjustment corresponding to the three primary colors of red, green and blue, (EL) is a lens, and from the lamp (LA) The emitted light is applied to the film (F) at the print position through the color filter (CF) and the lens (EL). Then, the light transmitted through the film (F) is projected onto the photographic printing paper (PP) through the printing zoom lens (PL) and printing is performed. The configuration of this automatic printer will be described below along with its operation.

First, (50) is a lamp control circuit for controlling the on / off state of the lamp (LA). This lamp (LA) is not only used as a light source for printing, but also for detecting the edge of the screen in the film feeding state and for film. It is also used for scanning imprinted codes, color balance and photometry for exposure determination.

Reference numeral (52) is a film transporting device for delivering the film photographed by the above-mentioned camera toward the carrier of the printer, and delivering the film (F) in the right direction of the drawing. The density of the film sent to the right is CC
A screen edge detection device (5) that is monitored by a D line sensor or a MOS type line sensor (54) and the output of this MOS type line sensor (54) is input.
When it is detected by 6) that the density of the film being monitored has changed, the film feeding by the film transport device (52) is stopped. That is, as shown in the time chart of FIG. 28, the screen edge detection device (5
Signal input from 6) to the film transport device (52)
When (a) falls, the film feed is stopped and the film is placed at the position where one frame of the film is printed. The frame of the film for which printing has been completed is sequentially wound by a film winding device (not shown).

When the film feeding is stopped, the code reading device (58) is operated by the signal (b) emitted from the film transport device (52), and the film (F)
The code imprinted in the vicinity of the frame at the print position of is read via the line sensor (60). That is, each information of the photographing mode of the frame to be printed, whether to print the date, and the date to be printed is read by the code reading device (58). Then, the information of the photographing mode read by the code reading device (58) includes, as a signal (c), a printing zoom lens control device (62) for setting a printing magnification of the printing zoom lens (PL) and a photometry zoom. Lens (M
L) The zoom lens control device for photometry (6)
It is transmitted to 4). And both zoom lenses (ML)
In (PL), the magnification is set according to the information of the photographing mode, and when trimming is designated at the time of photographing, the photometric range on the frame and the enlargement magnification to the printing paper are determined according to the trimming size. With this configuration, even if the mode to specify the trimming at the time of shooting is set, only the range to be printed can be accurately metered, and the image can be stretched to a predetermined size regardless of the trimming size. Can be printed.

Then, when the setting of the magnification of the photometric zoom lens (ML) by the photometric zoom lens control device (64) is completed, the exposure calculation circuit (66) performs the exposure calculation by the signal (d) indicating the completion. This exposure calculation uses the zoom lens (M
The color balance and the exposure amount corresponding to the frame are calculated based on the output of the photometric circuit (68) which receives light via L). The color balance information calculated here is transmitted to the filter control device (70) as a signal (e) and used for color balance adjustment, while the exposure amount information is used as a signal (f) in the lamp control circuit (50). ) Is used to determine the amount of light emitted from the lamp (LA). Further, the signal (g) indicating the end of photometry is also transmitted from the exposure calculation circuit (66) to the lamp control circuit (50), and the lamp (LA) is temporarily turned off.

Next, the filter control device (70) sets the color filter (CF) according to the color balance information from the photometric circuit (68), and when this setting is completed, the filter control device (70) indicates the completion of the filter setting. The signal (h) is emitted.

The signal (h) is supplied to a lamp control circuit (50), a shutter control device (72) for controlling opening and closing of a shutter (PS) arranged in front of the printing paper (PP) at the print position,
And a date print control device (74) for controlling whether or not to print the date on the screen of the printing paper to be printed. Here, the information regarding the date printed on the printing paper is decoded from the code reading device (58) through the decoder (76) and input to the date print control device (74), and the date print control device ( 74) sets the date of the date board (78) indicating the date to be printed according to this information.

Then, as soon as the signal (h) is input, the shutter controller (72) starts opening the shutter (PS), and the lamp controller (50) fully opens the shutter (PS) after the signal (h) is input. The lamp (LA) is turned on after a certain time elapses before printing is performed. On the other hand, if the date print is selected by the code imprinted on the film, the date print controller (74)
After a certain time elapses from the input of (h) until the shutter (PS) is fully opened, the lamp (LD) is turned on and the date is printed. Here, (DL) is a lens for date printing, and the date set on the date plate (78) is projected and printed on the screen of the photographic paper by the lens for date printing (DL). If the date print is not selected here by the code imprinted on the film, the lamp (LD)
Is not lit so the date is not printed.

Here, the lighting time of the date printing lamp (LD) is controlled by the date printing control device (74) to be a fixed time, and the date printing time is set to be shorter than the printing time by the lamp (LA). Lamp (LD)
Is set. On the other hand, the lamp (LA) for film printing is configured such that the lighting time and the light intensity are controlled by the lamp control circuit (50) according to the information on the exposure amount.

When printing with the lamp (LA) is completed,
The lamp control circuit (50) outputs the exposure completion signal (j) after turning off the lamp (LA). This exposure completion signal
By (j), the film transport device (52) starts feeding the film, and the shutter control device (72) closes the shutter (PS). Furthermore, this exposure completion signal
According to (j), the photographic paper conveying device (80) is photographic paper (PP)
To the right in the figure to prepare for the next print. Further, the exposure end signal (j) causes the screen edge detection device (56), the code reading device (58), and the exposure calculation circuit (6).
6) and the filter controller (70) are reset and ready for the next print. Then, the printed printing papers are sequentially stored in a printing paper storage device (not shown) and subjected to a printing process.

Since the date of printing is recorded on the film in the form of a code in the camera of this embodiment, it is difficult to recognize the date of printing even if the film is viewed as it is. In particular, when a reversal film that is rarely printed on photographic paper is used, even if the date is imprinted on the film with a code, the date is of little use. Therefore, in the case of using such a reversal film, a date imprinting device that imprints the date as a numerical value on the screen of the film as in the past is built in the camera, and when the reversal film is used, The date imprinting device may imprint the date as a numerical value on the film. Here, in order to determine whether the normal negative film is loaded or the reversal film is loaded, the information of the film latitude of the information recorded in the film cartridge can be used. Therefore, of the film sensitivity information input from the switch (CAS) of this embodiment, information about the film latitude (for example, "exposu"
If it is determined that the loaded film is reversal film, the conventional date imprinting device that imprints the date as a numerical value on the film should be used. It should be configured to.
Alternatively, the date imprinting device may be manually selected according to the loaded film.

Further, in the case of a reversal film, normal printing is not performed, so that it may be configured to prohibit switching to the trimming mode when it is determined that the reversal film is mounted.

Further, in the camera of this embodiment, the trimming size can be changed to three types, and the minimum F value (maximum aperture diameter) and the maximum shutter speed are changed according to each trimming size. However, the present invention is not limited to this, and the minimum F value or the maximum shutter speed may be switched depending on whether or not trimming is performed. Further, such a limit value may be changed, and a value for issuing a warning such as a camera shake warning may be switched depending on whether or not trimming is performed. Further, in the present embodiment, the flash is configured to automatically emit light when proper exposure cannot be obtained even when the maximum shutter speed is limited. Alternatively, the flash light emitting portion may be configured to protrude from the camera body to encourage the use of the flash.

Further, in a camera having an automatic exposure control mode, in the case of the aperture priority shutter speed automatic control mode in which the aperture is prioritized over the set value, the limit is set according to whether or not the aperture value to be set is trimmed. In addition, in the case of the program mode in which the diaphragm is automatically controlled and the shutter speed priority diaphragm automatic control mode, the calculated diaphragm value may be limited.

Further, although the camera of the present embodiment is configured so that the aperture and the shutter speed change in a triangular shape as shown in FIG. 18, this is set to be a trapezoidal shape and trimming is performed. In this case, the restriction may be limited by limiting the height of the trapezoidal die.

Further, although the automatic printer of the present embodiment is configured to print the data in the corner of the range in which the subject is printed, the invention is not limited to this, and the data is printed outside the range in which the data is printed. You may comprise so that it may be printed on the white frame part. Further, when the data is printed within the range in which the subject is printed, the color of the printed data may be changed so that the data can be easily discriminated. Further, it may be configured such that a position of a color in which the data is easily discriminated is searched and the data is printed at the position. Then, the data printing optical system is adjusted so that the position and size of the data to be printed are adjusted according to the print size, making it easy to check the printed data and affecting the printed subject. You can leave it out.

Further, the code imprinted on the film may be configured so as to be imprinted as a magnetic code on the magnetic recording layer coated on the film. The data imprinted as the code is not limited to the photographing date as in the embodiment, but may be hour / minute / second data, photographing exposure data, serial number, or the like.

Incidentally, in the automatic printer of this embodiment, the printing optical system and the photometric optical system were separately provided,
A part of them may be used also, and for example, the photometric light receiving element may be arranged on the shutter (PS) shown in FIG.

Further, in the above embodiment, the imprinting data is imprinted outside the screen to be photographed, but the invention is not limited to this, and one corner of one screen to be photographed or a predetermined neighborhood near the lower side. The area is provided with a light shielding means for shielding the light from the subject from entering, and only when trimming is selected or when the light shielding is always performed by the light shielding means,
The imprinting data may be imprinted in the shaded area.

Effect of the Invention As described in detail above, the present invention provides a camera capable of switching between a normal shooting mode and a trimming shooting mode in which a trimming range is instructed so as to extend a shooting range narrower than the shooting range in the normal shooting mode. Trimming signal output means for outputting a trimming signal indicating the trimming shooting mode when selected, trimming signal output means for measuring the brightness of the subject, means for setting an exposure factor according to the measured brightness, and trimming According to the signal, it is characterized by having a limiting means for limiting the setting limit value of the low-luminance side of the exposure factor to a value on the higher-luminance side than the limit value in the normal shooting mode. , A special effect of eliminating various inconveniences (blurring, flare, blurring, etc.) that lead to image quality deterioration in trimming mode Is what you can get.

[Brief description of drawings]

FIG. 1 is a perspective view showing a camera according to an embodiment of the present invention, FIG. 2 is a top view of the camera, FIG. 3 is a front view of the camera, and FIG. 4 is a viewfinder optical system and distance measuring optical system. FIG. 5 is a sectional view showing the structure, FIG. 5 is a schematic diagram showing the trimming range, FIG. 6 is a schematic diagram showing the display in the viewfinder field, and FIG. 7 is a photographing range of the photographing lens and a photometric range of the photometric system. 8 and 9 are views showing the display mode of the liquid crystal display device, FIG. 10 is a view of the state in which the back lid of the camera is opened, as seen from the rear, and FIG. 11 is An enlarged front view of the code imprinting unit seen from the rear,
FIG. 12 is a vertical sectional view of the code imprinting unit, and FIG. 13 is a transverse sectional view of the code imprinting unit.
FIG. 4 is a view of the film on which the code is imprinted, viewed from the back side, FIG. 15 is a diagram for explaining the code imprinted on the film, and FIG. 16 is an electric circuit diagram of the camera.
FIG. 17 is a block diagram showing the structure of the automatic focus adjustment circuit, FIG. 18 is a graph showing the relationship between the aperture diameter and the opening time of the shutter that also serves as the aperture, and the flash emission timing, and FIG. A graph showing the relationship between the shooting mode and the exposure value switched to flash shooting, FIGS. 20 and 21 are flowcharts showing the operation of the control microcomputer, and FIG. 22 is a flowchart showing details of step # 8. FIG. 23 is a schematic diagram showing the operation, FIG. 24, FIG. 25 and FIG. 26 are flowcharts showing the operation of the display microcomputer, respectively. FIG. 27 is an automatic printer of the system of this embodiment. And FIG. 28 is a time chart showing the operation. (S ₃ ); trimming signal output means, (CMC); aperture limiting means, (CMC) (DMC) (LEDR) (32a); recording means.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeo Takarada 2-30 Azuchi-cho, Higashi-ku, Osaka-shi, Osaka, Osaka, Osaka International Building Minolta Camera Co., Ltd. (72) Hiroshi Ueda 2-chome, Azuchi-cho, Higashi-ku, Osaka-shi, Osaka No. 30 Osaka Osaka International Building Minolta Camera Co., Ltd. Examiner Kazuhide Ozawa

Claims (4)

[Claims] 1. A camera capable of switching between a normal shooting mode and a trimming shooting mode for instructing a trimming range so as to stretch a range narrower than the shooting range in the normal shooting mode, when the trimming shooting mode is selected. A trimming signal output means for outputting a trimming signal indicating that, a means for setting an exposure factor, and a setting limit value on the low-luminance side of the exposure factor is set to be higher than the limit value in the normal shooting mode according to the trimming signal. A camera capable of trimming shooting, comprising: a limiting unit for limiting a value on the high brightness side. 2. The exposure factor is a shutter speed, and the limiting means limits the shutter speed lower limit setting value to a higher speed side than the limit value in the normal photographing mode according to the trimming signal. Claim 1 to
A camera that can perform the trimming shooting described in the section. 3. The exposure factor is an aperture value, and the limiting means limits the open side setting limit value of the aperture value to a smaller aperture side than the limit value in the normal photographing mode according to the trimming signal. A camera capable of trimming shooting according to claim 1. 4. The exposure factor is a program consisting of a combination of a shutter speed and an aperture value, and the limiting means sets the set limit value on the low luminance side of the combination above the limit value in the normal photographing mode according to the trimming signal. The camera capable of trimming shooting according to claim 1, wherein the value is limited to a value on the higher brightness side.