JPS62112139A - Camera capable of trimming photographing - Google Patents

Abstract

PURPOSE:To attain printing with proper exposure by setting up a photometric range switching means narrowing the photometric range of a luminance measuring means narrower than that of a normal photographing mode at the selection of a trimming mode. CONSTITUTION:An interval between both lenses is narrowed in the normal photographing mode to set up a photometric angle of a photometric optical system to a comparatively wide angle thetaa corresponding to a photographing range and the interval is expanded in the trimming mode to set up the photometric angle to a narrow angle thetab corresponding to a narrow range for printing in the trimming mode. A photometric photodetecting element 19 is constituted so as to measure light beams made incident from the range of the photometric angle. Consequently, printing with proper exposure can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera, and more specifically, the present invention relates to a camera, and more specifically, the normal shooting mode and a narrower range are 1. The present invention relates to a camera that can selectively switch between trimming modes.

Husband L [Old 1] Conventionally, a camera capable of cropping photography as described above is known from Japanese Patent Application Laid-Open No. 54-26721.

``L 烹】L Fire'' 2 & Ra ζt x l'='l-勺-
Go to 7 - In such a camera, if the metering angle of the self-Q exposure metering optical system is defeated by the angle of view in the normal shooting mode without trimming, when shooting in the trimming mode, the angle of view will increase to the extent that is not actually printed. The exposure calculation will be performed by metering the light, which may result in incorrect metering. Conversely, if you match the photometry angle to the angle of view that corresponds to the area printed in trimming mode,
In the normal shooting mode (it becomes impossible to measure the entire shadow area), and the metering method differs between the trimming mode and the normal shooting mode (average metering and spot metering).

For example, if an extremely bright subject is located between the angle of view in normal shooting mode and the angle of view corresponding to the area printed in trimming mode (hereinafter referred to as the angle of view in trimming mode). If you set the metering angle of average metering to the angle of view of normal shooting mode -f&, 1 shadow of trimming mode will be performed based on the photometering result of that high-brightness subject that will not be printed, so it will not be possible to print while in trimming mode. The subject will be underexposed. On the other hand, if the photometry angle of average photometry is made to match the angle of view of trimming mode, the high-brightness subject will not be photometered when the first shadow is used in normal shooting mode, resulting in overexposed prints.

The present invention has been made in consideration of these points, and its object is to provide a camera that can obtain prints with appropriate exposure in both the normal shooting mode and the trimming mode.

In order to achieve the above object, the present invention selectively switches between the normal shooting mode and the trimming mode in which a narrower area is printed. It is characterized by having a mode selection means, and a photometry range switching means that narrows the photometry range of the brightness measurement means, such as the brightness measurement means for measuring the brightness of the subject, than the photometry range of the normal shooting mode when the trimming mode is selected. That is.

Therefore, according to the present invention, the photometry range of the luminance measuring means can be switched according to the darkest mode, so that appropriate exposure can be obtained according to the angle of view of the photographing mode.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 is a perspective view showing the camera according to the embodiment of the present invention, in which (1) is the camera body, (2) is the photographing lens, (3) is the shutter and tallerise button, and (4) is the trimming. Lever, (5) is the liquid crystal display board, (6) is the flash light emitting part, (7) is the window, (8) < 9) is the distance measuring arm for distance measurement, (10) is This is a light receiving window for photometry.

FIG. 3 is a top view of this camera, showing a mechanism for switching between a wide-angle (standard) shadow state and a telephoto sacrificial shadow state by trimming by operating the trimming lever (4). In Figure 3, when the trimming lever (4) is moved to the "-1de" side, that is, to the right in the figure (the cam plate (4a) integrated with the trimming lever (4)
) also moves to the right, and the switching optical system support plate (11) moves upward in the figure via the pin (lla) engaged with the groove (4b) of the cam plate (4a), as shown by the broken line in the figure. You can switch to wide-angle (standard) shooting mode. (12a>(12b) are respectively light projecting lenses for distance measurement, (13a) and (13b) are respectively light receiving lenses for photometry, (1, 4a) (14b)
are light receiving lenses for distance measurement, and both are (12
a) (13a) (14a) are fixed to the camera body (1), (+2b) (13bl
(14b) is movable in the optical axis direction by a switching optical system support plate (11).

When the trimming lever (1) is turned to the "Te1e" side, the irradiation range of the distance measurement projection light is narrowed and the combined focal length of the distance measurement light receiving lenses (14a) (14b) is lengthened. , the distance measurement in the trimming mode, where the enlargement magnification of the print 1 is larger than that in the normal photographing mode, is improved. Furthermore, by this switching, the light receiving lens for photometry (+3a) (13
The composite focal length of b) is also made longer, making the photometry range in trimming mode narrower than that in normal shooting mode. This is because when shooting in trimming mode, the area printed is narrower than in normal shooting mode, so the metering range of the photometric optical system is narrowed to correspond to the area printed by trimming. be. With this configuration, even in the trimming mode, a range corresponding to the printed range is photometered to obtain proper exposure. I can do two things.

For the viewfinder, turn the trimming lever (4)” Te1
In order to switch to the e” side, the viewfinder lens (
15) forward in the optical axis direction (downward in the figure), and move the finder lens (16) backward in the optical axis direction (upward in the figure) to increase the finder magnification, so that the area to be printed by trimming is Directed by frame. Note that (17) is a frame reflector, and (18) is an eyepiece. (19) is a light-receiving element for photometry, (20) is a light-emitting element for distance measurement, and (21) is a light-receiving element for distance measurement. The flash light emitting device consists of a flash reflector (22), a xenon arc tube (23), a fixed flash panel (24), and a movable flash panel (25).
), and constitutes a zoom flash whose irradiation range can be changed by operating the trimming lever (4).

Next, Fig. 1 (A) (B
). In Figure 1, (13a) (1
Reference numerals 3b) and 3b are the aforementioned photometric light-receiving lenses, in which the object-side lens (13b) is movable in the optical axis direction, and the image-side lens (13a) is fixed to the camera body. Reference numeral (19) denotes the above-mentioned photometric light-receiving element, which is composed of a solicon photodiode, and the object side surface (r) of the package acts as a lens surface having positive refractive power. (S) is a diaphragm placed in front of the lens (13a).

FIG. 1(A) shows the arrangement of both lenses (13a) (13b) in the normal shooting mode, and FIG. 1(B) shows the arrangement of both lenses (13a) (13b) in the trimming mode.
) is shown. As you can see, by switching from normal shooting mode to cropping mode,
Only the lens (13b) is moved forward in the optical axis direction, and the distance between the lenses (13a) and (13t+) is widened. Therefore, if the photometric angle in the normal photographing mode is θa as shown in FIG. 1A, and the photometric angle in the trimming mode is θb as shown in FIG. 1B, then θa>θb.

To explain this in more detail, first, ignoring the refractive power of the lens surface (13b) of the photodetector package, let the composite focal length of this photometric optical system be ft,
) is assumed to be f, and the focal length of the rear lens (L3a) is f2. Then, the composite focal length ft of the entire photometric optical system is 1/ft-(1/f+)
+ (1/ fz) - (e/ rl' fz)・
・・・・・・・・・It is determined by (1). Here, e represents the distance between both lenses. As is clear from equation (1), if both rl' fz are positive, the value on the right side of (1) 2 becomes smaller as the distance e between both signals increases, and therefore the value of the entire photometric optical system decreases. The composite focal length rt becomes larger. Then, as the composite focal length ft increases, the photometric angle decreases, so
By increasing the distance between both lenses, the photometric angle of the photometric optical system can be narrowed.

Therefore, in this embodiment, both lenses (13a) (1
By moving the object-side lens (13b) in 3b) in the optical axis direction and changing the distance between both lenses, the combined focal length of the photometric optical system as a whole is changed, thereby changing the overall focal length of the photometric optical system. It is configured to change the viewing photometric angle. In other words, in this embodiment, in the normal shooting mode, the distance between both lenses is narrowed as shown in FIG.
In addition to setting the corresponding relatively wide angle θa, in the trimming mode, the distance between both lenses is widened as shown in Figure 1 ([3)], and the photometric angle of the photometric optical system is printed in the trimming mode. The angle θb is set at a narrow angle corresponding to the narrow range. The photometric light receiving element (19) is configured to averagely measure the light incident from within the photometric angle.

FIG. 4 is a longitudinal sectional view of the camera of this embodiment.

FIG. 5(A) is a front view showing the inside of the camera back;
37) is a terminal that receives signals from the camera body side,
(IP), (TI? [
)), (DI5), and (GND) are arranged. (36) is a print number imprinting unit, which imprints the previously set print number onto the film as a 4-bit signal when the push button switch (44), which will be described later, is pressed. Consists of light emitting diodes. (38) is a trimming information η insertion unit, which burns a trimming mark (38a) on the film using a trimming signal emitted when the trimming lever is set to telephoto, and is composed of one light emitting diode. . (39) is the date data imprint area when the trimming lever is in the wide-angle (standard) position, that is, when not trimming, and (40) is the date data imprint area when the trimming lever is in the telephoto position, that is, when trimming. The date data at the time is smaller than the date data at the time when no trimming is done, taking into consideration the large enlargement magnification.

FIG. 5(B) is an outside front view of the back cover. The back cover (43) has a print number imprinting push button switch 44, a print number setting push button switch 45, and a print number display section 47. 2) By pressing on the picture strip,
Set the required number of prints. Each time the button is pressed, a number is set in ascending order from O to 8 and displayed on the display section 47. Note that after the set number 8, the number returns to O again. Next, by pressing the switch 44, the set number of prints is imprinted onto the film as a 4-bit signal. 49 is a mark that displays that the print (-) number has been imprinted on the film. It is provided in a part of the print number display area and is displayed when switch 44 is pressed. 50 is a date imprint mode switch. So, when you turn on the switch, the 2nd date is imprinted, and when you turn it off, it is not imprinted (...
6 is a date display section, and 4th is a mark that indicates when the date has been imprinted.

FIG. 6 is a front view of the interior of the camera seen from the back cover side with the camera back cover open. In the figure, (29) indicates the position of the back cover.

The trimming signal brush (24) provided inside the trimming lever (4) and the trimming signal board (25) form a sliding switch, which is turned on during telephoto shooting, and the trimming lever is set to the wide-angle side or the telephoto side. (26) is a screen frame with normal dimensions of 24 x 361 m provided on the camera body. Screen frame (26)
) is provided with four parts (A) in four vertical and horizontal positions so that you can check on the negative film the Ilj area that will be trimmed and printed when the trimming lever is set to the telephoto side. Note that the range shown in (35) indicates the trimming range.
(28) is a terminal that sends signals from the camera body side to the rltM side, IP (imprint), TRD (1-
rimming data), DIS (disaple), N
It consists of four terminals: O (ground wire). In the figure, (30) is a fillem pressure switch, (R1) is a strobe switch lever, (32) is a cartridge, and (33) is a take-up screen.

FIG. 7 is a front view showing a liquid crystal display panel (5) provided on the top surface of the camera body. The display section first displays the number of recordable film frames (CAM), which reads and displays the CAS code for the DX film cartridge. CA
If there is no S code, the display will disappear. Second, there is a display of film intensity (150), same as before, CAS
Read the code and display the +50 demon. C.A.S.
ISO100 for film cartridges without cords
Display as . Thirdly, there is an indication that a cartridge is loaded, and when the cartridge is loaded and the case back is to be closed, a mark (l) AM) is displayed. Fourthly, the inside of the camera.

There is an indication of the status of the frame, and an indication of preliminary feeding (FS
There are 'h', '+, an indication that the film is being wound (WM), and an indication that it is being rewinded (RWM). Fifth, natural light transmission mode (AM)
, Furanossie optical photography mode (Fllll is displayed).

Sixth, there is a number of shots taken (FCD). Seventh, there is a low speed limit warning display (L) when the subject is dark and underexposure.
LM) and a flash charging completion display (CIIM>), these two are flashing displays using light emitting diodes.

All of these displays are based on signals processed by the microprocessor, which will be explained later, except for the signals in the Franchet circuit that indicate the completion of flash charging.

FIG. 8 shows a film taken with the camera according to the embodiment of the present invention. (35) shows the range of the screen after trimming, and (38a) shows the trimming mark, which is printed by the trimming information imprinting section. be included. <36a)
is the number of prints imprinted with the number of prints code (36
), (39a) is data such as date, display position when not cropped, (40a)
Similarly, data such as date is the display position when trimmed, and data imprinting area (39), (40)
It is imprinted by

FIG. 9 shows a circuit diagram of the entire camera system, in which the left side of the center is assembled into the camera body, and the right side is installed into the back cover.

First, to explain the circuit on the camera body side, the battery (B
The power supplied from AI) passes through a voltage stabilizing circuit consisting of a diode (Dl) and a capacitor CC, and then goes to the first
Processor (CPUI) Supplied to others. Also,
(AE), (AP), digital-to-analog converter (D
A) The Frenchmatic timer (FT) has (CPI
A power transistor (BT) operated by a signal from I,)
It is supplied through.

To explain the operating status of the camera to (CPU, ), start with the switches. (Sl) is a photometry switch, which is closed by pressing the release button to the first step.

(S2) is the release switch, press the release button to the second
Push it all the way to S to close it. (11s>: The winding switch detects the completion of winding one frame of film and closes it. (FIS) is the film loading detection switch.

Closes when not loaded. (TRS)
1 - Rimming switch, which closes when the trimming bar is in the telephoto position, that is, when trimming is performed.

(Fl, S) is the switch that closes when using the flash, (BC3) is the open/close detection switch for the camera back cover, the switch is ON when the back cover is closed, and OFF when it is open.
Becomes FF. (CAP) is a switch that reads the number of images that can be taken from among the CAS codes in Patrone.
I) is also a switch that sells 8 film sensitivity codes out of CAS codes.

The output side of the above switch is the υ1 included terminal (port.) of (CPU,) and the human powered boat (PG), (PI), (pz
), (PI).

(P,.), (P,), (PS), (P,), (
1', , ), respectively. In addition, when the switches (FLS) and (BC3) change from ON to OFF, or from OFF to ON, an interrupt is sent to (CPU,) in order to reset the information given to (CPU,). Pulse generation circuit (PCZ) for applying
I) via (CPUI) input port TITI),
＜Supply a falling signal to Te2).

Film winding and rewinding signals are output from output ports (Pff) and (pe) of (CPIl,) to control the drive motor. A start signal (STA) is sent from the output port (Pl) of (CPU, ) to the flash light emitter (PL).
When this is sent, the flash emitter starts boosting and charging. When charging is complete, the signal (C1l) changes to (CPU,)
is sent to the input port (pro) of The flash light emitter (PL) uses the flashmatic timer (FT) described below.
It emits light in response to a light emission start signal (FSTA).

The release control circuit (RL) is actuated by a falling signal from the output port (P,) of (CPII,), releases the flash, and releases the lock of the AF mechanism. (CPII
, ) from the output port (Plz) of the power transistor (
A signal is provided to activate the BT.

In the exposure control circuit (AE), when the power is turned on, photometry of the subject is performed, and the output port (Pl,
), when the photometric value storage order signal (MM) is output, the photometric value at that point and the data from (CAI) are converted to an analog signal by the D-A converter, and the film sensitivity (signal line l) is output.
The exposure value EV+ obtained from 5A) is fixed (hereinafter AP, P
(referred to as lku). When the focus is detected by the automatic body point detection circuit (AP) and the focus adjustment is completed by the AF mechanism,
The shutter is released and the shutter begins to open, and from that moment on, the current counter (C3), which activates the counter that measures the pulses output from the encoder as the shutter moves, is turned on. Then, the count value of the counter, which indicates the exposure ejection since the shutter first opened, is compared with the count (aEV2 and the exposure value EV that was previously locked to AE), and when both are defeated, the gloss control magnet (B) is turned OFF to close the shutter, and the shutter close signal (ECU) is turned OFF (CPU,
) boat (PIS) and fludge 1-match timer (F
T).

When the locked exposure value EV is less than a predetermined value, the exposure is insufficient, and the low speed limit warning signal (i, 14) is sent to (CP
U,) is sent to baud 1- (Pl,). In this case, when the count value EV2 reaches a certain value, the shutter is forcibly closed even if the AE port has not reached the 2-subtracted Ev.

In the automatic point adjustment circuit (AF), when the power is turned on, distance M measurement is started, and the measured distance data is stored and output to the Franschmatic timer (FT). When the release circuit (RL) is activated and the AP mechanism is unlocked, the lens starts moving and the amount of movement is measured in pulses. When the amount of pulse-measured movement satisfies the previously stored distance measurement data and the lens moves to the in-focus position, the drive magnet (AM) is turned off, locking the movement of the lens and causing the lens to stop. do. Further, a trimming presence/absence signal is directly transmitted to the AF section from the trimming switch (TR5), and the distance measurement calculation method (decoding from the measured value to the distance zone) calculated in the F section is changed.

The digital-to-analog converter (DA) converts the film exposure signal (Sv) based on the CAS code on the cartridge into an analog signal and supplies the analog signal to the exposure control circuit (AH).

The flashmatic timer (FT) calculates the light emission start timing data of the flash emitter based on the distance data from the AP and the film exposure signal (Sv), and calculates the light emission start timing data of the flash emitter based on the distance data from the AP and the film exposure signal (Sv).
After a predetermined time when the time counted by the operation of 3) reaches the above-mentioned light emission start time data, a light emission start signal (H3TA) is sent to the furan' and two light emitters.

As a result, a flash is emitted when the shutter blade is opened to an appropriate position to provide the necessary amount of exposure, thereby providing appropriate exposure.

When the camera is not in flash mode (C
PU,) from the boat (Pz+) (FEN) to tl i
h signal is sent, but the flash start signal (FSTA) is not sent, and the shutter is closed due to (AE) even though the contents of the counter that counts the shutter opening time have not yet reached the flash flash start time. When the shutter open signal (ECI) is sent out, which often occurs during daytime synchronization, the shutter open signal (ECE) is sent.
to force the flash to fire.

From the output port (PI3) of (CPII+), a pulse (
IP). A trimming data signal (TRD) is sent out from the output port (P, ff) in trimming mode. A signal (Dis) for prohibiting the number of prints from being imprinted on the film is sent from the output port (PI8), and these three types of signals are transmitted to the camera cover plate side.

In addition, various display data are sent from the board (P!g) and displayed on the display board (5).

Next, a circuit for an example of a camera back cover will be described.

The power supplied from the battery (ItA2) is passed through the diode (D
The voltage is supplied to the second processor (CPU2) and others through a voltage stabilizing circuit consisting of a capacitor (CZ) and a capacitor (CZ).

The switch (50) is the date imprint mode switch.
Its output is input to the input port (P,.) of (CPL). The switch (45) is a print number setting switch, and each time it is pressed, an ON signal is emitted (CP I+,
) The counter in parentheses counts and the desired number of sheets is set, and the signal is input from the boat (P3+). The switch (44) is a switch for imprinting the number of prints, and its output is input to the baud (Pffz). Also, when switches (44) and (45) are set to O14, (
In order to interrupt the CPU 2), it is input to the board (ITa) via an AND gate. (38) is the trimming mark imprinting light source, which is the boat (t) of (CPU2).
It operates with the control signal sent from "is". (LG)
is the print number imprint light source, boat (Pff6)~
It is controlled by a 4-bit signal sent from (ptw).

(LP+), (LPd is the data imprint light source during no trimming and trimming, boat (P4°), (P,
, ) is controlled by signals sent from the (47) is the print number display section, (46) is the date display section, (39),
(40) is a display section for imprinting date data during no trimming and during trimming, and date data is displayed in both cases using an output signal from the boat (P+z) of (CPU 2).

Figure 10 shows the parts related to exposure control and side shadows (CPU,)
3 is a flowchart showing signal processing within the system.

First, the photometry switch (Sl) is turned on, and the interrupt terminal (
When an interrupt signal is input to IT,), the power transistor (BT) is operated to supply power to the necessary parts.

Next, a boost operation stop signal is sent to the flash 1 light emitter.

This is because when the light emitter starts charging, the power supply voltage decreases (
Since there is a risk that AE), AF, etc. may not operate properly, boosting the voltage for charging the light emitter is stopped. Check the flash switch (FLS) and if it is ON, the Fra Sauche shooting display mark (FM) will appear on the display (5).
is displayed to check whether charging is complete, and if charging is not completed, the process does not proceed to the exposure control flow (release is locked) and checks whether the photometry switch (S, ) is OFF. If it is OFF, the process moves to the flash photography display routine (F-11) in FIG. If the switch (S,〉) is ON, wait for the switch (S+) to turn OFF.If the flash is fully charged, it can fire, so the flash control signal instructs the flash ematic timer (FT). (FEN)
If the flash switch (FLS) is not ON, the natural light display mark (Ar1) is displayed on the display section (5), and the flash light emission control signal (F[!N) is set to "H".

Prohibit binding and lighting.

Next, move on to step 4 (shine), wait for a certain period of time for the photometry circuit to stabilize, then lock the AE and memorize the photometry data. From the photometry data, determine whether or not the shine speed will decrease. However, when the temperature is low, it is checked to see if C(FEN) is in the state of "I-" G is in effect, in which Flanoche light emission is performed. When it is not ready, a low speed limit warning display (LLM) flashes on the display section (5).

After completing the above steps, release the release switch (
Check S2). If not ON, photometry switch (Sl)
is checked, and if (Sl) is ON, (S2) is checked again. If (S+) is not ON, the release button has been released.Figure 12 Flash photography display routine (F-
11) is increased by 1. If the release switch (S2) is ON, the data imprinting time corresponding to the film sensitivity is set in the timer. Check the trimming switch (TR3),
Trimming data (TRD) depending on trimming f/no
Send “shi” or “I]”.

Next, from the start of the exposure control operation to the completion of winding, an imprint prohibition signal (Dis) "L" is sent to prohibit imprinting and setting of the number of prints by operating a switch on the back cover. Start the imprint time timer and set the data imprint signal (IP) to "L" to start imprinting. Activate the release (RL) to start lens control operation. Next, the end of the imprint time timer and the exposure completion signal from (A) are alternately compared, and when the timer ends, the imprint signal (IP) is set to "°H" and imprinting is completed. When both the end of the timer and the completion of exposure are determined, the power transistor (B
T) is turned OFF to complete the shadowing operation.

Next, move on to winding the film. The maximum time required to wind one frame of film is entered into the timer, and the timer and winding operation are started. A blinking indication (WM) indicating that the winding is in progress is displayed on the display board (5). After waiting for a certain period of time for the 1-frame switch to turn OFF from the ON state, if a winding completion signal from the 1-frame switch is received before the timer ends, winding is stopped and the winding in progress display (WM) is turned off. Film loading switch (FIS)
), confirm that there is film, and advance the film counter by l”.
Check whether it is smaller than the value obtained by adding 1 to F), and if it is smaller, set the print number imprinting prohibition signal (DIS) to "11".
” and display the contents of the counter on the display board (,5).
”, the counter contents are displayed while setting the number of prints and imprinting are still prohibited, then check the photometering switch (Sl), and if (S, ) is OFF, the flash is turned off as shown in Figure 12. The shooting display routine (F-11> is incremented by 1. If the film winding is not completed within the scheduled film winding time set in the timer and the timer is completed, the film will be stretched when the film is wound after the final frame has been shot. In this case, the winding is stopped, the winding display is turned off, the film counter is advanced by "l" and its contents are displayed, and the photometry switch is turned off.
Figure 11 Rewind routine (F-10)
Move to.

FIG. 11 shows a flowchart 1 of the rewinding routine, in which after waiting for a certain period of time to elapse, a rewinding display (R) is flashed on the display board (5) and rewinding is started. If the 1-frame switch is ON, wait for the switch to turn OFF, then check whether 1-frame rewinding is complete, and if it is complete, count 1 from the film counter, display the counter contents on the display board (5), and rewind. Go back to rewind.

If l9 rewinding by the 1-frame switch is not completed, check the presence or absence of film with the detection switch (FIS), and if there is film, wait for l9 rewinding to complete; if there is no film, stop rewinding and open/close the camera back. Allow interrupts, turn off the rewind display, check the open/close switch on the back cover, and if it is ON, stop. If it is not ON, it means that the camera back is open, and the process moves to (F-12) of the display routine in FIG.

FIG. 12 is a flowchart of the furanone photography display routine. After turning on the power, check the furanone light source (FLS), and if it is not ON, stop boosting the flash power, and display the natural light photography display (AM) on the display board. Display. If it is ON, the flash power source is boosted and the flash light photography display FM is displayed. Then, the low speed limit warning display (LLM) of the shutter speed is turned off. Furthermore, check the back cover switch (BCS) and if it is ON, allow interrupts and stop. If it is not ON, (F
-12) L's moves.

This routine is also the shooting mode cutting routine,
Furano Soesinochi (FLS) is 011FOF from ON
When switching from F to ON, the pulse generator (PG
The operation of this routine is also performed when a pulse from z) is input to the interrupt terminal (ITI), and as mentioned above, this routine determines the state of (FLS) and switches between flannonyu mode and natural light mode. 6 Figure 13 shows the display board (5)
3 is a flowchart of a routine for displaying film information. Pulse generator < PCI by opening and closing the back cover
This routine starts when the pulse output from ) is input to (102).

Set the number of prints imprinting prohibition signal (Dis) to "L", then turn the back cover switch (BCS), if it is ON,
That is, if it is closed, the CAS code is read and the film sensitivity and number of shots are input. Furthermore, the presence or absence of a CAS code is checked daily, and if there is no CAS code, a fixed value of ``+so ioo'' is displayed on the display board (5), and the display of the number of shots that can be taken with DX film is turned off.When a CAS code is present, the film sensitivity is Sv is set, and the film sensitivity is displayed on the display board.Furthermore, the maximum number of possible shadows is displayed.Next, the presence or absence of film loading is detected, the loading is confirmed, and the cartridge display (
PAM) will be displayed on the display board. After loading the film, it is necessary to feed three frames, and to indicate this, the film display (FSM) and winding display (WM) are displayed blinking. Set the preliminary winding counter (N) to "0" and set the winding time on the timer. Start the timer and hoisting operation,
After waiting a predetermined time, check whether the winding is complete. If the timer has expired even though the winding has not been completed, it is determined that the winding has not been done correctly, and the process moves to the tenth flash winding return routine. When the winding is completed correctly, the winding is stopped and the preliminary winding counter (N) is incremented by "1". When the counter content is not "3", the hoisting operation returns again.

When (N) becomes "3", it means that the winding of 3 frames has been completed.
) is turned ON. The film counter is set to "■" and the contents of the counter are displayed on the display board (5). Photometering switch (S
1) is checked and if it is Oli F, the process moves to the straw/tsuyu photographing display routine F-11 and stops after the above-mentioned operation.

Returning to the beginning of Figure 13, the back cover case (BCS) is O.
When the operation by this interrupt (I72) is started by opening the FF, i.e., the back cover, the film sensitivity (15O), the number of possible shots (CAM), and the cartridge display (P
AM) will disappear. Next, it checks whether the film has been wound or not, and if winding is not completed, it issues a command to wind it. It checks whether the winding is complete, continues until the winding is completed, and stops the winding when the winding is completed. The film counter is returned to "0" and the contents of the counter are displayed at L7.

FIG. 14 shows a signal processing routine for imprinting various information on the film on the camera S lid side and displaying it on the back lid display section.

First, when an interrupt by the imprint signal (IP) from the camera side is input to the interrupt terminal (ITb), the counter that counts the imprint time for imprinting data on the film is reset and the counter is started. The mode switch (5o) is checked, and if it is the imprint mode, then it is checked whether the mode is the IJ printing mode or not. Even if it is not in imprint mode, check whether it is in trimming mode or not, and adjust the imprint light to 1ffl (LP,) depending on each case.
, or (LP,), and when in trimming mode, turn on trimming mark 717M light a (38), imprint these data, and finish imprinting (IP).
) becomes "L" and then stops the counter. Light source for previous imprint (t,p,), (tpz)
, the trimming mark TRM light i (38) is turned off. Next, prepare to imprint the number of prints. First, transfer the contents of the previous counter to the register (COR) to prepare to control the print number signal imprinting time, return the print number register (PNP) to 0'', and set the print number display section (4
Return the contents of 7) to “1”. Furthermore, return the print end flag (PSF) to 0'', and mark the number of prints entered (
49). Next, check the date imprint mode, and if it is the imprint mode, enter, for example, 3'' in the print mark display time counter (K), and set the print mark (48) in a part of the KM date display section (46) to a constant value. Display the time (for example, 3 seconds).

Checks for interruptions every second for displaying date, time, etc., and if there are no interruptions, allows the interruption and stops.

If there is an interrupt, the process moves to the one-second interrupt routine (F-14) shown in FIG.

Next, when the 0 interrupt starts, the time counter (K) is checked to see if it is "0" or not, and if it is "0", the print mark on the date display (
4th). If the counter is not "0", "1" is subtracted, and then the calendar operation starts, and the year, month, date, time,
The minutes and seconds are incremented by one second, the offset date, time, etc. are displayed on the date display section (46), and interrupts are allowed to stop.

FIG. 16 shows a routine for imprinting the number of prints. When the number of prints setting switch (45) or the number of prints imprinting switch (44) is turned on, an interrupt signal is sent via the AND circuit (AN). (ITa) and this operation is started. Number of prints imprinting prohibition signal (D
is) is not L1, that is, the state in which imprinting is permitted is determined, and the imprinting switch (44) is further checked, and if it is ON, the print U completion flag (PSF) is checked. flag(
PSF) is not “1”, change this to °l゛771-
Then, the contents of the print number register (PNP) are decoded and the print number projection light a ([, G) is turned on. Note that when the content of (PNP) is “0”, the number of prints is 1.
(normal) and (LG) does not light up. Here, the number of prints and the contents of (PNR) are shown in Table 1. After resetting the imprinting time counter, counting starts, and the imprinting time data corresponding to the 150 sensitivity from the camera is compared with the contents of the imprinting time register (C0R), which was set earlier. If they match, the imprinting time is started. Turn off the light i (LG) and display the mark (49) indicating that the number of prints for camera 'JAM has been input. Check the interrupts every second, and if there are no interrupts, allow the interrupts and stop. If there are 0 interrupts, the first
Calendar operation of the interrupt routine every second (F
-14) Displays data such as date and allows interrupts. If the print number imprinting switch (44) is not ON, it means that the print number setting switch (45) is ON, and the print completion flag (1'sF) is checked. )of"
0", display "l" on the print number display section of ml, and move on to interrupt check. When the flag (PSF) is "l"
If not, the print number register (PNl?) is “8”.
' (number of prints "O"), and if it is "8", set it back to '0' (number of prints "1"), '
If it is not 8", add 1" to it and display the number of prints corresponding to the content of (PNR) on the print number display section (47) on the camera 1 lid. And after this operation, switch (44)
If is Oll, the flow from F-15 described above is performed f times.

Figure 17 is a time chart that explains the imprinting time for the number of prints, when the back cover switch (BC3) is ON.
(Back cover closed), film pre-advance is 0FF (completed), flash switch (FIS) is ON, fill optical switch (S, ), release switch (S2) is OP.
I', when the film winding and rewinding are OFF, the print number imprinting prohibition signal becomes "I(") and imprinting is permitted.
When the frame is at the screen position, it is possible to imprint outside the 19th picture frame. If it is a 24-sheet film, the DX code is 24, and when the 25th frame is at the screen position, the DX code is 24.
It is possible to imprint outside the frame of the 4th frame, but it cannot be imprinted after the 25th frame starts to be reversed.Since it is imprinted after winding is complete, if the end of the film is reached before the winding of the final frame is completed and winding is not finished. cannot be imprinted on the final frame. You can imprint up to the number of shots guaranteed by the film.

FIG. 18 is a diagram schematically showing a printing device for film taken with a camera according to the present invention, in which a negative film (100
) is wound up by a negative film winding section (102). A light source section (110) consisting of a lamp, a condenser lens, a diffuser, and a mixing box is provided in the center, and a color filter (109) is provided in the light source section (110). On the bottom surface of the negative film (100), there is a frame edge detector (103) on the film surface, a code reader (104), a printing zoom lens (105), a photometric colorimetric zoom lens (1
06), a photometric colorimetric sensor (107), and a color separation filter (108) attached to the front of the sensor. Below the printing zoom lens (105) there is a photographic paper feeding section (111) and a photographic paper winding section (112). It is wound up. In addition, in front of the printing zoom lens (105), a shutter (11
3) is provided.

Next, the operation will be explained. When the negative film comes to the printing position, the frame edge detector (103) detects the edge and stops the negative film. Next, a code reading section (104) reads the trimming mark and print number code on the negative film. The photometric and colorimetric zoom lens (106) and the printing zoom lens (105) are adjusted depending on whether trimming is performed or not. In the case of trimming, the position to be trimmed and printed is measured, and in the case of non-trimming, the entire screen is photometrically measured by a photometric color sensor (107) having a color separation filter (108).
) filter (109) is selected and adjusted. Next, the shutter (113) is opened and the photographic paper is exposed. When the exposure is completed, the shutter closes and the next printing operation begins.

FIG. 19 is a schematic explanatory diagram of the configuration of the printing device control processing section, in which the CPU 3 (120) controls the operation of each element constituting the printing device, calculates photometric values, and controls the exposure amount. Photographic paper feeding signal (12
1) Negative film feeding signal from the negative film feeding section and winding section (122), frame edge detector (103)
Detection signal from (+23), photometric colorimetric sensor (107)
), the photometric colorimetric value (124) from the code reading section (104
) from the trimming mark, print number code signal (
125), zoom lens for photometry and printing (106)
, (105) position detection control signal (126), gloss (113) open/close signal (127), filter (109) control signal (12B) provided in the light source, light source exposure amount control signal (129), printing Signals such as start and end signals (130) are processed.

Figure 20 shows the CPU of the part related to printing on photographic paper.

3 is a flowchart showing signal processing within the system.

First, after setting the initial values, a command is given to feed the negative film, and the feed is stopped after detecting the edges on both sides. next,
Read the trimming mark and print number data and set it in the register (PNP).

If the number of prints is "0", printing is not performed and the process returns to supplying negatives. Check the presence or absence of trimming marks, and if it is trimming, check the club (TRF) that indicates trimming during the previous printing, and check if the flag is “11, that is, if it is trimming, immediately proceed to photometric colorimetry of the negative. If the flag is not "1", it is set to "1" and the lens is moved to the trimming position.

The same processing is performed when the image is not trimmed, but in this case, the lens is moved to the normal position.

Moving on to negative measurement, color balance calculations and exposure time calculations are performed, and the required filter is selected and set for the light source. Next, the light source is temporarily turned off, the shutter is opened, and the light source is turned on for exposure. Measure the elapsed exposure time calculated earlier with a counter,
After a predetermined time has elapsed, the light source is turned off and one sheet of photographic paper is fed.

Subtract "1" from the print number register (PltR) and repeat until the content of (PNI?) becomes 0°. (1
'NR) becomes "0", it means that the required number of sheets have been printed, so close the shutter, reset the filter, and if there are negatives to be printed, continue the printing operation and print all the negatives. The operation stops when printing is completed.

Incidentally, although the above embodiments have been shown with respect to a lens shutter camera, the present invention is not limited thereto, and T
The present invention is also effective in single-lens reflex cameras that perform TL photometry. In addition, in this embodiment, in order to switch the photometric angle (photometric range) of the photometric optical system between the normal shooting mode and the trimming mode, a zoom lens that moves a part of the lens that makes up the photometric optical system in the optical axis direction is used. However, the present invention is not limited to this, and a configuration may be adopted in which the lens is inserted into the optical path or withdrawn from the optical path in order to switch the photometric angle (photometric range).

As detailed above, the camera capable of cropping according to the present invention has mode selection means for selectively switching between the normal shooting mode and the trimming mode in which a narrower area is printed. The camera is characterized by having a brightness measuring means for measuring the brightness of the subject, and a photometric range switching means for narrowing the photometric range of the brightness measuring means to be narrower than the photometric range of the normal shooting mode when the trimming mode is set to I. With this configuration, it is possible to switch the photometry range of the brightness measuring means according to the angle of view of the ζ shooting mode, so it is possible to print with an appropriate exposure in both the normal shooting mode and the trimming mode. can be obtained.

[Brief explanation of drawings]

1A and 1B are cross-sectional views showing the arrangement of the photometric optical system according to the embodiment of the present invention in normal shooting mode, trimming mode, and mode; FIG. 2 is a perspective view of the camera according to the embodiment; The figure is the F side view, Figure 4 is the side view of the camera, and Figure 5 (A).
is a front view of the inside of the camera back cover, Figure 5 (B) is a front view of the outside of the camera back cover, Figure 6 is a front view of the inside of the camera seen from the back side, Figure 7 is a front view of the liquid crystal display section, Figure 8 is a front view of the photographic film, Figure 9 is a circuit diagram of the entire camera system, Figure 10 is a flowchart of the signal processing routine for exposure control and photography, Figure 11 is a flowchart of the rewinding routine, and Figure 12 is a flowchart of the rewind routine. Figure 13 is a flowchart of the display routine, Figure 14 is a flowchart of the camera & M side processing routine, Figure 15 is a flowchart of the 1 second interrupt routine, Figure 16 is the print routine. A flowchart of the processing routine for imprinting the number of prints, Fig. 17 is a time chart explaining the time during which the number of prints can be imprinted, Fig. 18 is a schematic explanatory diagram of the film printing device, and Fig. 19 is the printing device control processing section. FIG. 20 is a flowchart of the printing device control processing routine. (4); Mode selection means; (11) (13a) (13b); Photometry range switching means; (19); Luminance measurement means. Applicant: Minolta Camera Co., Ltd. Figure (A) 4th grade / Figure (B) Figure 3 Figure 4 Figure j ('A) $6 Figure $7 Figure 8 % 11 Figure lZ Figure f1

Claims (1)

[Claims] 1. Mode selection means for selectively switching between a normal shooting mode and a trimming mode in which a narrower area is printed, a brightness measurement means for measuring the brightness of a subject, and a trimming mode for selecting a trimming mode. 1. A camera capable of cropping photography, comprising a photometry range switching means that sometimes narrows the photometry range of the brightness measurement means than the photometry range of a normal photography mode. 2. A camera capable of cropping photography as set forth in claim 1, wherein the photometry range switching means is arranged in front of the brightness measurement means and comprises a zoom lens capable of changing the focal length. .