JP2581226B2 - camera - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera having a bracket photographing function and an auto shift photographing function.

2. Description of the Related Art In general, a camera shoots images with a predetermined exposure amount. However, in many cases, it is often difficult to determine the size of a photograph based on the determined exposure amount before taking the photograph. Therefore, bracket shooting is performed in which a plurality of pictures are taken of the same subject while changing the exposure amount for each picture.

In addition, even when the exposure amount is constant, auto shift photographing is performed in which a plurality of photographs are taken of the same subject in order to know how the photographs differ depending on the combination of the aperture value and the shutter speed.

Then, when performing such a specific shooting, the conventional camera turns on the release switch, and even if the release switch is turned off halfway, shooting is performed for all the number of images set in the specific shooting mode. ing.
This is because a series of shootings such as bracket shooting and auto shift shooting are considered to be the same as a single shot in the normal case, and in the past it was considered only so Release switch
Even if it was turned off, the shooting was continued.

However, when the release button is pressed and the release switch is turned on in this way, even when the release button is released halfway and the release switch is turned off, bracket shooting or auto shift shooting is performed until the end. In such a case, the situation of the subject or the like suddenly changes during the photographing, and even if it is desired to stop the subsequent photographing, the photographing cannot be stopped. As a result, useless film is consumed.

An object of the present invention is to provide a camera that eliminates such disadvantages.

Means for Solving the Problems In order to achieve the above object, according to the present invention, in a camera having a shooting mode in which a plurality of shots are continuously taken while changing an exposure condition to a film, the shooting mode is set to the above mode. Mode setting means for setting; continuous shooting number setting means for setting the number of shots to a predetermined number in response to the mode being set to the mode by the mode setting means; Shooting means for continuing shooting, and counting means for counting to determine whether or not the predetermined number has been reached during shooting in the mode, wherein the shooting means has reached the predetermined number. If the release switch is interrupted during shooting in the above mode, the shooting is terminated. And resetting the film exposure condition and the count amount by the counting means to values corresponding to the first frame while maintaining the photographing mode when the photographing is stopped. Means are provided.

According to this configuration, the release switch can be set in a specific shooting mode such as bracket shooting or auto shift shooting.
As long as the button remains ON, shooting is performed for all of the specified number of images (set number of images).
When turned off, shooting will be stopped at that point. further,
In addition to simply stopping the photographing, the photographing conditions and the count amount of the counting means are reset to values corresponding to the first frame, so that when the photographer starts photographing again, photographing is restarted from the initial state.

Embodiment FIG. 1 is a circuit block diagram of a camera according to this embodiment.
In the figure, (μC) is a microcomputer (hereinafter referred to as “microcomputer”) for controlling the entire camera and performing various calculations, and has an E ² PROM so that writing and reading can be freely performed inside. (AFct) is a focus detection circuit for performing focus detection, which is composed of a CCD, an integration control circuit, and an A / D conversion circuit. Convert to microcomputer (μC)
Output to (LD ₁ ) is an auxiliary light emitting element that emits light toward the subject when the luminance is low and the focus cannot be detected, thereby enabling focus detection.

(LM) is a photometry circuit which performs photometry for four areas described later, A / D converts the photometry value, and a microcomputer (μ).
C) as luminance information. (DISPC) is a display control circuit that inputs display data and a display control signal from a microcomputer (μC) and performs predetermined display on the display unit (DISP _I ) on the top of the camera body and the display unit (DISP _II ) in the viewfinder. is there.

In this embodiment, the IC card (CD) includes a custom card that can be changed and selected according to a person who uses the camera mode, and controls various functions of the camera according to shooting conditions (AE program, AE mode, AE mode, etc.). Is automatically determined 4
There are four types of ten cards: four program cards, four function cards for adding special functions, and memory cards for storing shooting data. These cards will be described in detail later. (ST) is an electronic flash device,
(IF) is a camera microcomputer (μC) and an electronic flash device (S
An interface provided between the camera and T). The (STC) receives the reflected light from the subject when the flash light has passed through the shooting lens (not shown) and stops the flash light emission when the proper exposure is reached. Circuit. (LE) is a lens circuit provided in the lens and outputs information specific to the interchangeable lens to the microcomputer (μC) of the camera. (LECN) is a lens drive control circuit that drives the taking lens based on focus detection information, (EN
C) is a converter that detects the rotation of the motor that drives the lens, and outputs a pulse to a microcomputer (μC) at each predetermined rotation angle. The microcomputer (μC) counts this pulse, detects the amount of extension of the current position from position ∞,
The distance is detected from the amount of feeding (number of feeding pulses (CT)). (TV _CT ) is a shutter control circuit that controls the shutter based on a control signal from a microcomputer (μC),
(AV _CT ) is an aperture control circuit that controls the aperture based on a control signal from a microcomputer (μC), and (MD) is a microcomputer (μC).
This is a motor control circuit for controlling film winding and rewinding based on the control signal from C). (BZ) is a buzzer that warns when the shutter speed reaches the speed at which camera shake occurs. (E) is a battery as a power supply, DC / DC is DC / DC for stabilizing the voltage (V _DD ) supplied to the microcomputer.
The converters (D ₁ ) to (D ₄ ) are a group of diodes for applying a voltage lower than the voltage (V _DD ) to the microcomputer when the DC / DC converter is off to reduce power consumption. Since the (μC) hardware can operate at this low voltage, an interrupt occurs, but the microcomputer (μC ₂ ) of the IC card (CD) cannot be driven at this low voltage.
(R _R ) and (C _R ) are a reset resistor and a capacitor for resetting the microcomputer (μC) when the battery is installed. (Tr ₁ ) is a power supply transistor for supplying power to a part of the circuit described above.

Next, to explain the switches, (S _RE ) is a battery mounting switch that is turned off when a battery is mounted.
When the battery is installed and the switch (S _RE ) is turned off, a signal that changes from the “L” level to the “H” level is applied to the terminal (RE) of the microcomputer (μC), and the microcomputer (μC) performs a reset routine described later. Will be executed. (S _EM ) is a normally open push-type exposure mode change switch. The operation of this switch (S _EM ) and the up switch (Su
The exposure mode is changed by operating p) and the down switch (Sdn). (S _FUN ) is a normally open push-type function change switch, and the function change (for example, switching between continuous shooting and single shooting) can be performed by operating this switch and operating the up switch (Sup) and down switch ((Sdn)). (S _CD )
Is a normally open push-type card switch that is used when a normal card is mounted to switch the valid / invalid of the function by the card, or when changing the data setting in a card other than the program card (details). Will be described later). (S _CDS ) is a card data setting switch that is operated when shifting to data setting when a card is installed. (S ₁ ) performs preparation operations necessary for photographing such as photometry and AF operation. This switch is turned on at the first stroke of a release button (not shown). Any one of the above switches (S _EM ), (S _FUN ), (S _CD ), (S _CDS ), and (S ₁ ) is operated, and when it is turned on, [INT ₁ ] described later
Execute the interrupt. (S _M ) is a main switch for enabling the operation of the camera. When this switch is turned on or off, an interrupt of [INT ₂ ] described later is executed.

(S _MUP ) is a switch that turns on when the mirror up is completed, charges the shutter function, and turns off when the mirror down.

(S ₂ ) is a release switch that is operated when performing a shooting operation, and is turned on by pressing a second stroke (deeper than the first stroke) of the release button. (S _WD ) is a one-frame switch that is turned ON when one frame of the fill is wound.
(S _AEL ) is a switch for performing AE lock (exposure lock), and is composed of a normally open push switch.
(S _{AF / M} ) is a focus adjustment mode switching state switch for switching between the AF and manual focusing states.

(S _SE ) is a normally open change data selection switch for selecting data to be changed. (S _SELF ) is a normally open push switch for setting a self mode when performing self-photographing. When this mode is set and the release switch (S ₂ ) is turned on, self-photographing is started (S _SELF ).
_AU ) is an aperture change switch for changing the aperture value by operating this switch and operating an up switch or a down switch when the exposure mode is the M mode (manual mode). When the switch (S _AU ) is not operated in the M mode, the shutter speed is changed by operating the up switch or the down switch. (S _FLM ) is a film detection switch for detecting whether or not a film is loaded, which is disposed on a film rail surface near the spool chamber and which is turned off when a film is present. ( _SRC ) is a back cover closing detection switch that turns on when the back cover is closed and turns off when the back cover is opened. When this switch is turned on, the microcomputer (μC) executes an interrupt routine described later. (S _RW ) is a switch for starting film rewinding, which is turned on when operated, executes an interrupt routine described later, and is turned off when the back cover is opened. (S
_CR ) is an IC that turns off when an IC card (CD) is inserted.
A card mounting switch that resets the microcomputer (μC ₂ ) of the IC card (CD) when turned off.
(X) is a so-called X contact, which is turned on when one shutter travel is completed, and turned off when the release member (not shown) is charged.

(Sup) is a normally open up switch for switching or adding data to be changed, and (Sdn) is a normally open down switch for performing subtraction. When the aperture value is changed in the M mode, the aperture value change switch (S _AU ) is turned ON and (Sup) and (Sdn) are operated to increase or decrease the aperture value, and the aperture change switch is turned OFF and (Sup), (Sdn). The operations of () perform the functions of increasing and decreasing the shutter speed, respectively. The operation of the up switch (Sup) and the down switch (Sdn) is detected by the fact that the terminals (IP ₂₀ ) and (IP ₂₁ ) have each become “L” level. In FIG. 1, a line (WI) common to the above switches is connected to a ground potential point (GND).

Table 1 summarizes the above-mentioned switches and their functions.

Next, before describing the operation of the camera of this embodiment, four types of IC cards used here will be described.

(I) Custom card: This IC card selects a function (a function that can be controlled) required by the photographer from among the functions (controllable functions) of the camera (deletes an unnecessary one), or alternatively selects a function. This aims to provide a camera according to the photographer's intention and photographing technique. In addition, since unnecessary functions can be omitted, a camera which is simplified and has good operability when changing modes is provided. Next, description of the card and display contents performed on the card will be described.

First, the selection of the function of the IC card includes (i) selection of the exposure mode, (ii) selection of the function, and (iii) the relationship by operating the lens-side switch.

First, (b-1) program mode (P mode) (b-2) aperture priority mode (A mode) (b-3) manual mode (M mode) (B-4) There is a shutter priority mode (S mode), and the P mode is always included as a basis, and a combination of the remaining three modes (A, M, S mode) can be selected. Therefore, as a combination, In the four modes shown in FIG. 2A (PROGRAM is represented by P), the selected combination is displayed when the mode is set, for example, as shown in FIG. 2B. During exposure, the display of one selected exposure mode (FIG. 2 (c) (A mode selection)) is performed. The dots around the characters (or numerical values) indicate blinking. Details will be described later. The entire display is shown in FIG. 2 (a) for reference.

Next, (ii) the alternative of the function is the presence / absence of a camera shake buzzer. When this is set, the numerical value 3 in the display shown in FIG. The value "1" of the film counter indicates that there is a buzzer, and "2" indicates that there is no buzzer.

The relationship by the operation of the lens-side switch of (iii) is what AF (autofocus) mode is selected when a switch (described later) provided on the lens side is operated. The modes are as follows: first, when the switch is not operated, (E-1) one-shot in the whole area by multi-point / spot (follow-up determination after focusing) When the switch is operated, (E-2) focus Lock (E-3) Spot AF (E-4) There is continuous AF, and when setting, "CuSt-" is displayed as shown in Fig. 2 (d).
The numerical value “3” of “3” becomes “2”, and the blinking display “1” becomes “1” to “3”.
“3” corresponds to the above “E-2” to “E-4” (illustration is omitted and will be described in detail at the time of setting).

 Table 2 shows the selection numbers and functions.

In the above (i) to (III), the mode of (i) to (III) is sequentially selected by turning on the card key once at the time of setting the mode, and the mode is selected by pressing the up switch or the down switch. Function (set value) is selected. The modes (i) to (III) and the functions can be set cyclically.

(II) Program card; The program card sets the shooting scene and determines the shutter speed and aperture of the AF mode (continuous / one-shot / ranging area) AE according to the situation of the scene or the subject. Thus, it is created for the purpose of taking a picture according to a scene (details will be described later).

(III) Function card; (3-1) H / S card {(highlight / shadow) card} For this card, the white one is whiter and the black one is blacker. The value is over (+2.0) (highlight) and under (-2.0) (shadow) by a certain value. The insertion of this card (one of H / S selection) and the operation of the AE lock switch cause it to change. Is performed.

(3-2) AE bracket card This card is designed so that the exposure obtained by the camera can be shifted by 0.3, 0.5 or 1 step to the over side or under side (details will be described later).

(3-3) Auto shift card This is to change a shooting effect (depth or speed) by changing a combination of an aperture value and a shutter speed with respect to an exposure value.

(3-4) Defocusing card By driving the focusing lens during exposure, a soft focus effect and a zoom effect during exposure can be obtained.

(IV) Data memory card; This is for storing the data of shooting. ・ Film counter ・ Control aperture value ・ Control shutter speed ・ Exposure compensation value ・ AE mode ・ Lens information (focal length and open F _NO ) ・ Film Sensitivity data can be stored in memory, and these data can be viewed using the LCD display on the camera body (details will be described later).

Next, the operation of the camera is shown in FIG.
A description will be given based on the flowchart of C), and a detailed description of each unit will be given as necessary.

When the battery (E) is installed, the battery installation switch (S _RE ) is turned off, and a signal that changes from “L” level to “H” level is input to the terminal (RE) and the DC / DC converter is turned on.
N (PWO = “H”), the built-in clock starts oscillating, and the clock is also sent from the microcomputer (μC) to the IC card (CD) via the terminal (φ). At the time of interruption, the DC / DC converter is turned on and the clock is started automatically by a hardware circuit. Next, the microcomputer (μC) executes a [RESET] routine shown in FIG.

First, the microcomputer (μC) prohibits all interrupts to this flow (# 100), and controls the DC / DC converter control (PW
Set all output terminals other than “O” to “L” level (# 10
Five). Also, a flag in the RAM (Table 8 (described later)) and the RAM
Reset all (registers) (# 110). Thus, the exposure mode is set to the P mode, the spot / multipoint AF is set to the multipoint AF mode, the single shooting (S) / continuous shooting (C) is set to the single shooting (S), and a mode in which no exposure correction is performed, and the like are set. .

Next, in step (# 115), the number of films (N ₁ ) and the film sensitivity (Sv) stored in the E ² PROM are read and transferred to a predetermined RAM. Thereafter, it is determined whether the main switch (S _M ) is ON (# 120). If the main switch is off, (IP ₆ =
(H)), proceeding to step (# 125), turning off the power supply transistor (Tr ₁ ) (PW = “L”), and performing data communication (VI) between the card and the serial data.

Here, serial data communication will be briefly described. Sends a transfer start signal to the other party to perform data transfer according to the serial communication command (C _SCD =
“H”), and then a serial clock for transfer (S _CK ) is output from the camera. The output side (camera or partner) outputs one bit of data in synchronization with the rise of the clock, and the input side (partner or camera) inputs one bit of data in synchronization with the fall of the clock. By performing this eight times (8 bits), one data transfer is completed. By performing this as needed, necessary data can be obtained. Data communication with lens (LE), data communication with display control circuit (DISPC), electronic flash device (S
The same applies to data communication with T).

Here, the data communication (VI) with the IC card will be described with reference to FIG. 5 (f). In this communication, first the terminal (CSC
D) is set to "H" to request communication (# 270). Next, data indicating data communication (VI) is set, and the camera is set on the output side to perform data communication of data indicating communication (VI) (# 272, # 277). When this is completed, the camera is set on the input side, and waits for data to be set on the IC card side (# 280, # 282). After data communication (# 285) and data input, the terminal (CSCD) is set to "L" to indicate the end of communication (# 286). The camera microcomputer (μ
It is determined whether or not C) is in a state in which sleep (stop) is allowed. The clock and voltage (V _DD ) necessary for the operation of the IC card are transmitted from the microcomputer (μC) of the camera to the IC card (CD). If the clock and voltage are not sent during the operation of the IC card (because the clock stops and the voltage drops when the camera sleeps), the microcomputer of the IC card (μC ₂ ) This is to prevent the predetermined signal processing (write control to the E ² PROM) from being executed, so that this can be prevented.

Returning to FIG. 3, when the above-described determination in step (# 135), that is, the determination as to whether or not the microcomputer (μC) of the camera may sleep, is performed based on the input data. In step (# 140), all the interrupts are enabled and sleep is performed. With this sleep, the clock is stopped and the DC / DC converter is turned off in a hardware manner.
If sleep is not possible, after 30 msec in step (# 145), the process returns to step (# 130), and the same processing is repeated.

Next, the ON or interruption by OFF of the main switch (S _M) [INT _2].

First, it is determined in step (# 147) whether or not the interrupt is caused by turning on the switch (S _M ). If the interrupt is not caused by turning on (IP ₆ = “H”), the interrupt of [INT ₁ ] is prohibited ( #twenty four
0), display data (display of all lights off at this time) is set (# 245), and in step (# 250), the display control circuit (DISPC)
Data communication with the display microcomputer of step (# 12)
Proceed to 5) and perform the same processing as described above. By data communication, the display microcomputer turns off all data by inputting data for turning off all lights (see FIG. 2 (e)).
The control of the display microcomputer will be described later.

On the other hand, the main switch (S _M ) is turned on in step (# 147)
If you are, step enable interrupts at (# 150) [INT _1], set the display data in the next step (# 155) (standby display), the display microcomputer and step (# 160) Performs data communication. By this data communication, the display microcomputer performs the display shown in FIG. 2 (f). In FIG. 2 (f), the P mode is selected as the AE mode,
No exposure compensation, single shooting mode, multi-point ranging, card function ON,
It is shown that the number of films is 5.

Next, the microcomputer (μC) of the camera checks whether the terminal (IP ₅ ) is at the “L” level (switches S _EM , S _FUN , S _CD , S _CDS , S ₁
Is determined to be ON in step (# 170), and if it is not "L" level, the process proceeds to step (# 125).
The sleep control described above is performed. If "L" level, the step (# 180) was willing power held in the flag is set (OPF) for performing 5 seconds, executes the subroutine to be described later [S ₁ ON] (# 190). Next, it is determined whether or not the terminal (IP ₅ ) is at the “L” level (# 200). "L"
If it is a level, the card request signal (DS
After setting (PREQ) to 0, the process proceeds to step (# 180), and steps (# 180) and (# 190) are repeated. If it is not "L" level (that is, if none of the above five switches are operated), the process proceeds to step (# 205), and it is determined whether or not the power holding flag (OPF) is set. If it is set, the power holding timer is reset and started in step (# 215), and the flag (OPF) is reset in the next step (# 220), and the process proceeds to step (# 235).
Even when the power holding flag (OPF) is not set, proceed to step (# 235) and S ₁ ON from the IC card (CD)
It is determined whether or not there is a signal for a request to repeat the loop, and if so, the process returns to step (# 190). This is because when the display by the display microcomputer is controlled based on the data from the IC card when data is being set or the like, even if the user wants to see the display, the power supply for 5 seconds on the camera side When the hold is expired, the display is changed to the standby display without any permission, and is performed to prohibit the display from being inconvenient to use. If there is no repetition request, the process proceeds to step (# 237) to determine whether the timer has elapsed for 5 seconds.

If elapsed proceeds to step (# 150), from the standby display to the sleep control, whereas, repeated flow from [S ₁ ON] of when not reached step (# 190).

When an IC card (CD) is inserted into the camera, a display request signal (DSPREQ) is issued by the card in step (# 172).
After setting in step (# 172), step (# 180)
Proceed to the subsequent flow.

Next, the routine of [S ₁ ] for controlling photometry, AF and display will be described with reference to FIG.

First, the interrupt of [INT ₁ ] for this flow is prohibited (# 400). This is because if an interrupt [INT ₁ ] shown in FIG. 3 occurs during this control, the control operation does not proceed. Next, in (# 405), the terminal (PW) of the microcomputer (μC)
Was in the "H" level, and ON the transistor (Tr ₁₎ by applying a base to the low level of the PNP transistor (Tr ₁₎ via an inverter (IN _1), photometric circuit (L
M), supply power to the AF circuit (AF _CT ), etc. Next, input information specific to the interchangeable lens from the lens circuit (LE) (# 41
0). This is shown in FIG. 10 and explained. First, the terminal (CSL
E) is set to the "H" level (# 600), serial communication is performed a required number of times, and information is input from the lens (# 605).
FIG. 4 (a) shows the circuit in the lens. The clock input from the camera is counted by the decoder (2) to generate an address signal. At this time, when a predetermined address is reached, lens data that changes by zooming is used, so the encoder (3) that detects the focal length
Thus, the address is changed by the address circuit (5) according to the focal length, and predetermined data is output to the camera body. The switch (S _Q ) is a lens-side switch provided on the lens (10) (FIG. 4 (b)
In this case, the address must be changed because the data must be changed. The address set in this way is output to the ROM (6). ROM
(6) outputs data based on the specified address. This output is converted into a serial signal by a parallel / serial conversion circuit (7) and supplied to the camera body.

Next, the lens information will be described. As shown in Table 11, the lens information sent to the camera body is the lens mounting signal, the lens aperture value (Avo), the maximum lens value (Avmax), the aperture amount from ∞ to near, and the focal length. Information, (lens drive amount / defocus amount) conversion coefficient, ON / OFF of the lens side switch (S _Q ), information indicating whether the lens can be driven (LOK), etc. Input to the RAM at the address in the body. This signal (LOK)
Is changed from "1" to "0" in response to a state where AF cannot be performed. The camera body receives this signal to stop the motor.

On the other hand, the lens (10) side has a ROM and address configuration as shown in Table 9. (A) and (B) are the same
Two similar data differ only S _Q relationship and LOK relationship in the ROM is a memory. Conventionally, there is relatively little lens information, and one type of ROM can store a plurality of types of lens information having the same function, and switch lens information according to the lens used. In this case, the amount of information per lens is fixed, and the required RO
M has been decided. In such a case, creating (increasing) new data indicating that the data depends on the ON / OFF state of the switch is two more steps when changing the address of the ROM by changing the address according to the ON / OFF state of the switch. Byte (ON, OFF)
Is required. If there is room in the ROM, the first
By increasing the 2-byte of 06 _H, 08 _H as shown in 0 Table, OFF of the lens-side switch (S _Q), it is sufficient to select a change the address 06 _H, 08 _H in accordance with the ON . However, when there is no such margin, as shown in Table 9, the ROMs provided for a plurality of types (in this embodiment, (B)) have the same data except for the data to be changed by turning on and off the switches. It is possible to select (A) or (B) according to the OFF / ON state of the switch. However, in this case, this ROM
The types of lenses that can be used are reduced. In the lenses in Table 9, the lens-side switch (S _Q ) is OFF
In case of, either of 06 _H and either of 07 _H , 08 _H
16 _H and 17 _H (bo = 0, AF motor stopped) will be sent. Note that (xxx) in the address indicates address data that is changed according to the amount of extension of the zoom or focusing lens, and is input from the encoders (3) and (4).

The signal (LOK) in the lens indicates that the lens is not for focus detection. Upon receiving this signal, the camera body prohibits the AF operation (lens drive) and performs only the focus detection operation. This address 07 _H as an AF operation prohibited when it is macro mode in the macro with the zoom lens example (Table 10), 08 _H (Table 9), the address 09 _H (10 as an AF operation permission when not in macro mode
Table), 07 data _H (Table 9) is sent.

Even if a lens with the function of the switch (S _Q ) is attached to an old camera that does not read this bit (because of new data), the function of the lens side switch (S _Q ) is maintained. (However, the function change by IC card --- Focus lock, Continuous, Spot AF selection --- The latter two cannot be done because the IC card is not the old camera. If only the focus lock is possible), and if the LOK signal is set to prohibit AF in response to the ON of the switch (S _Q ), the old camera is regarded as a lens that cannot perform AF, and the AF operation is prohibited, and only focus detection is performed. Do.
To do this, in the ninth table when said switch (S _Q) is ON B, when the tenth Table 07 _H, 08 _H, and the switch (S _Q) is OFF in Table 9 A, In Table 10, 06 _H and 07
_H, 09 _H one and the it is sufficient to vary, respectively.

Regarding the control on the camera side, it is only necessary to determine whether or not to inhibit AF when reading the data of the lens and to control whether or not AF is inhibited, so that the description with reference to the drawings is omitted.

After inputting the lens information described above, the terminal (CS
LE) to the “L” level and return (# 610).

Returning to FIG. 6, the microcomputer (μC) performs data communication (I) with the card in step (# 413). In this data communication (I), the camera switch status, AE mode, and control data are sent from the camera to the IC card.

The contents are shown in the CACD table (see the column of I-communication). The data communication (I) is shown in FIG. The communication method is almost the same as the data communication (VI) in FIG. 5 (f) described above. The data communication (SIO) is three times, and the camera side is the output side in this communication as well. The use of these data will be described later.

Next, the microcomputer (μC) inputs information on the electronic flash device from the electronic flash device (ST) (# 415). The information includes the guide number (GN) indicating the amount of issue, switch ON / O
There are two pieces of information indicating FF ,. Here, the electronic flash device used in this embodiment will be described.

FIG. 8A shows a circuit block diagram of the electronic flash device. (D ₁ ) is a capacitor for preventing reverse charging, (C ₁ ) is a large-capacity backup capacitor, (μC ₃ ) is a microcomputer that performs sequence control, and (TM) is a pulse that indicates the type of serial communication from the camera body. Is a detection circuit that detects the width of the signal and outputs a signal indicating the type of communication to the microcomputer (μC ³ ). (D / D) is a booster circuit for converting a low voltage to a high voltage, and starts and stops boosting by a signal from a microcomputer (μC ₃ ). (D ₂ ) is a rectifier diode, (CM) is a main capacitor that stores energy from the booster circuit, (LEC) is a light emission control circuit that controls light emission, (DIS
P) is a display circuit, as shown in FIG.
This indicates whether or not N (a state in which boosting and data communication with the camera can be performed by a signal). When ON, an indication of ON is displayed, and when OFF, nothing is displayed. (I / OC
C) is an input / output switching circuit for switching input / output of communication with the camera. (S _M ) is a normally open push switch for switching the power ON and OFF, and is switched OFF when the power is ON and ON when the power is OFF. (MONT) is a circuit for monitoring the light emission amount itself, and outputs an "H" signal when the light emission amount becomes 1/4 of the total light emission. (L _O ) is a normally open switch that switches the light emission amount between 1/4 and full light emission, and switches to 1/4 full light emission each time the switch is turned on.

A flowchart of a microcomputer (μC) for performing sequence control of the electronic flash device will be described with reference to FIG. 8C and thereafter.

When the power switch (S _M ) is operated, a signal that changes from “H” (the terminal is pulled up internally) to “L” is input to the microcomputer (μC ₃ ), and the microcomputer (μC ₃ )
C ₃₎ to take an interrupt, the microcomputer ([mu] C ₃₎ executes the flowchart shown in Figure No. 8 (c). In this flowchart, first, a flag (ON
It is determined whether or not F) is set (# ST10). When the flag is set (ONF = 1), the flag (OP ₂ ) is reset to “L” level to reset the flag and stop the boosting, the ON display is turned off, and the sleep is performed (# ST20 to # ST40).
When the above flag (ONF) is not set,
Set the flag (ONF) as an operation by ON from FF,
The terminal (OP ₂ ) is set to “H” level to start boosting (#ST
50, # ST60). Then, ON is displayed (# ST70). Next, the timer is reset and started (# ST80), and waits for 5 minutes to elapse (# ST90). After 5 minutes elapses, the process proceeds to (# ST20) to perform the same control as power-off and sleep.

Next, FIG. 8 (d) shows and explains an interrupt process [INT ₁ ] performed when a request for data communication for transmitting data from the electronic flash device to the camera is made from the camera.
First, when an “H” signal of pulse width (T ₁ ) is sent from the camera, the detection circuit (TM) detects this time (T ₁ ), and the (INT ₁ ) terminal of the microcomputer (μC ₃ ) And outputs a signal that changes from "L" to "H" level. Microcomputer (μ
C ₃ ) receives this change signal and performs [INT ₁ ] interrupt processing.

The terminal (φ ₁ ) always operates when a battery is mounted, and the microcomputer (μC ₃ ) is connected via this terminal (φ ₁ ).
Sends a clock to the timer detection circuit (TM).

The microcomputer (μC ₃ ) first resets the timer by setting the terminal (OP ₁ ) to the “H” level, sets all outputs of the timer to the “L” level, and does not respond to the input of a signal to the timer. (# ST110). And power on
Whether or not the flag (ONF) is set indicating the determined in step (# ST120), sets the bit for data communication to (STS ₁₎ to "1" when it is set (# ST13
0), terminal (O) in step (# ST140) to start boosting
P ₂ ) is set to “H” level, and the routine proceeds to step (# ST180).
On the other hand, if not set, the bit (STS ₁ ) is reset and the process proceeds to step (# ST180) (# ST150). If a signal for releasing guide number restriction is input from the camera, the process proceeds to step (# ST183), and control for releasing guide number restriction is performed. When the signal is not input,
Determines whether the guide number limit switch (L ₀ ) is ON, and when it is ON (IP = “L”), determines whether the flag (L ₀ LMTF) indicating this limit is set (# ST181, # ST182). When it is set, it is reset, the terminal (OP ₄ ) is set to “L” level, and the emission stop signal from the monitor circuit (MONT) is inhibited from being input to the emission control circuit (# ST183, # ST184). .

Set this when the flag (L ₀ LMTF) is not set, to allow the light emission amount limit pin (OP ₄₎ as "H" level, sets the data (STS ₃₎ for communication (#S
T186, ~ # ST187). If the switch (L ₀ ) has not been turned on, the process proceeds to step (# ST190).

Note that this step (# ST190) is followed by a step (# ST184)
And from (# ST187).

In step (# ST190), the terminal (I / OC) is set to the “H” level so that the electronic flash device (ST) outputs to the input / output switching circuit (I / OCC) as the output side. The signal of the above-mentioned bit (STS ₁ ) and the 5-bit signal indicating the guide number corresponding to the electronic flash device (ST) are set (# ST20
0), wait for the data communication clock (SCK) from the camera body to be sent, and when the clock (SCK) is sent, the terminal (S _out ) and the input / output switching circuit are synchronized Control communication for outputting data through (I / OCC) (# ST210). When this is completed, the terminal (OP ₁ ) is set to the “L” level (# ST220), the timer is reset, and the pulse width from the camera can be detected at any time.

When a pulse width (T ₂ ) signal is input from the camera, the timer (TM) sets the (FC) terminal to the “H” level. The microcomputer (μC ₃ ) inputs this to the terminal (IP ₁ ), and proceeds from step (# ST230) to (# ST240).

In step (# ST240), the terminal (OP
₁ ) is set to “H” level, and the terminal (I / O
C) is set to the “L” level (# ST250), and the electronic flash device is controlled to be on the input side. Then, the camera data transmitted in synchronization with the communication clock (SCK) from the camera is input to the terminal (S _IN ) through the input / output circuit (I / OCC) and read into a predetermined register (RAM). (# ST260,
# ST270). Then, the terminal (OP ₁ ) is set to the “L” level so that pulses from the camera can be received (#S
T280). As input data, a signal indicating whether or not light emission is present, whether or not power supply is forcibly turned OFF, and whether or not power supply is forcibly turned ON or not is input.

In step (# ST290), it is determined based on the input data whether or not the forced power is ON. If not forcibly ON (# ST330), proceed. On the other hand, when indicating the forced ON, the flag (ONF) indicating the power ON is set, the terminal (OP ₂ ) is set to the “H” level to start boosting, the display of ON is performed, and the process proceeds to the step (# ST330) ( # ST300 to # ST320).

In step (# ST330), it is determined whether the power is forcibly turned off based on data from the camera. When forced OFF, the microcomputer (μC ₃ ) turns off the ON display, resets the power-off flag (ONF), and sets the terminal (OP ₂ ) to “L”.
Level to stop boosting and sleep (# ST420 to #S
T440). On the other hand, if not forced OFF, the step (# ST34
Proceeding to 0), the timer is reset and started, and it is determined whether or not 5 minutes have elapsed (# ST350). If five minutes have elapsed, the process proceeds to step (# ST420), and the same control as forcible OFF is performed. If 5 minutes have not elapsed, it is determined whether or not exposure control has been entered (# ST360). If exposure control has not been entered, the process returns to step (# ST350), and steps (# ST350) and (# ST360). repeat. The signal from the camera indicating that the exposure control has been started is a pulse width (T ₃ ) signal input through the terminal (ST ₁ ). The detection circuit (TM) detects this and sets the terminal (EC) to "H" level. When this signal is input, the microcomputer (μC ₃ ) resets and starts the timer (# ST370). Based on the signal indicating the presence / absence of light emission sent from the camera, the microcomputer (μC ₃ ) ₃₎ "H" level (# ST400), when not exhibit luminescence by terminals (OP ₃₎ to "L" level, the process proceeds to each step (# ST 412). In this step (# ST412)
Step (S ₂ ) ON completes shutter front curtain travel +
Time to α (emission time of electronic flash device) (150mse
After waiting for c), the terminal (OP ₁ ) is set to “L” (# ST415), and even if an interrupt pulse from the camera is received, it can be processed, and the switch (# ST80) of FIG. move on.

In the circuit of FIG. 8A, the AND circuit (AND ₁ ) operates only during the exposure control operation, and receives a dimming completion signal. The AND circuit (AND ₂ ) determines whether or not to permit the light emission signal sent from the camera. The microcomputer (μ
C ₃ ) sets the terminal (OP ₃ ) to “H” / “L”.

 Next, the interface circuit will be described with reference to FIG.

A signal (CSST) indicating the type of data communication (the pulse width changes according to the type) to the electronic flash device (ST), a clock (SCK) at the time of communication, and a signal indicating the dimming amount are OR circuits (ORs). ₂₁ ) to the electronic flash device (ST). When one curtain of the shutter is completed, the X contact (X) is turned on (this is turned off by the charging operation at the time of winding), and a signal of Heilbell "H" is output from the terminal (XT).

(I / OCG) is an input / output switching circuit.
The direction (input or output) of data communication to the electronic flash device (ST) is switched according to the signal from C).

In FIG. 11 (a), the microcomputer (μC) of the camera outputs a pulse having a width of a fixed time (t ₁ ) to the terminal (CSFL) in order to perform data communication with the electronic flash device (input on the camera side). The / OC terminal is set to the "L" level, the input / output circuit is set as the input side, and the electronic flash unit waits for data setting, and performs data input by serial communication once (# 650 to # 655).

Returning to FIG. 6, the AF mode is determined in step (# 417). FIG. 7A shows a subroutine for determining the AF mode. First, it is determined from the lens information whether or not the above-described lens-side switch (S _Q ) is ON (# 400).
0). If this switch is ON, the flag (OPF) is set in step (# 4005) to reset and start the power holding time (starting from 10 seconds), and the data communication (II) (described later) It is determined whether the card function is ON or OFF based on the input card function ON / OFF signal (# 4007).

If the card function is OFF, the based on the E ² information PROM in the camera, and controls the AF mode of AF previously stored.

On the other hand, if the card function is ON, it is determined whether the custom cards, if not a custom card, and controls the AF mode again based on E ² information PROM in the camera.

If the card is a custom card, the AF set in the card entered from the card during data communication (IV) (described later)
Perform AF control based on information.

Note that the control is the same when the AF mode is determined by the E ² PROM in the camera and when the AF mode is determined by the E ² PROM in the custom card. ² Perform this only when determining the AF mode with the PROM.

The microcomputer (μC) reads information from the E ² PROM in the camera, and determines in step (# 4010) whether or not the AF mode is the focus lock mode. Here, in the case of the focus lock mode, the focus lock bit (Fb ₁₄ ) by the switch (S _Q ) is set, the bit (Fb ₁₃ ) indicating the auxiliary light mode is reset, and the follow-up mode is displayed. At times, the flag (following F) is reset to turn off the light (# 4020 to # 4030).

This is because the AF operation is prohibited in the focus lock mode, so no subsequent AF operation is required.
It is for prohibiting the emission of the auxiliary light required for this and to achieve power dissipation.

The follow-up display is also useless after the focus lock because the lens is not driven and the follow-up operation is not possible, so that the follow-up flag is reset and turned off.

Next, it is determined whether the AF mode is spot AF (# 4
035). This step (# 4035) includes the above steps (# 4
010) also occurs when the camera is not in the focus lock mode. If spot AF is used here, switch ( _SQ )
Is turned on, and it is determined in step (# 40) whether or not a flag (SQONF) indicating that the flow has passed this flow for the first time is set.
Judgment in 36), if not set, step (# 4
In step 037), the contents of the bit (Fb ₂ ) are transferred to the bit (Fb ₁₅ ) to store the multipoint / spot mode before the switch (S _Q ) is turned on, and the flag (SQONF) is reset. (# 4038), the spot mode is set in step (# 4040) (Fb ₂ = 1), and the process proceeds to step (# 4045). If the flag (SQONF) is set, the step (# 403
7) Skip to the step and proceed to step (# 4045). In step (# 4045), it is determined whether or not continuous AF is set. If continuous AF is set, a bit (Fb ₈ = 1) indicating this is set (# 4050), and a bit indicating auxiliary light is set. (Fb ₁₃ ) is reset in step (# 4055) and the routine returns. Now, it is assumed that the auxiliary light mode for the continuous AF is prohibited in consideration of power saving. In continuous AF, where focus adjustment does not end, the auxiliary light is emitted every time focus detection (integration) is performed, so the battery that is the power supply is quickly consumed and the number of films that can be shot decreases. It is. If it is not continuous AF in step (# 4045), the process returns immediately. still,
In the flow when the switch (S _Q ) is ON, only one of focus lock, spot AF, and continuous AF is set in the IC card.
For example, if the focus is locked in step (# 4010), both of steps (# 4035) and (# 4045) become NO.

Switch (S _Q ) on the lens side in the above step (# 4000)
If is OFF, go to step (# 4060). In this step (# 4060), the bit (F
b ₁₄ ) Reset.

Switch (S _Q) spot AF is selected by, the switch (S _Q) and immediately post-control OFF is whether flags (SQONF) is determined by whether it is set (# 406
Five). If set, by shifting the content of bit (b ₁₅ ) to bit (b ₂ ), multiple points / spots before spot AF selection by switch ( _SQ ) are obtained (# 4
070). Then, the flag (SQONF) is reset and the process proceeds to step (# 4087). If the flag (SQONF) is not set in step (# 4065), it is determined whether or not the IC card (close-up card) is used for forced spot AF. If it is, the bit (Fb) is used to indicate spot AF.
₂ ) Set and proceed to step (# 4087). If not forced spot AF, skip step (# 4085) and proceed to step (# 4087). Next, in step (# 4087), it is determined whether or not the camera is in forced continuous AF based on a signal input from a card (sport card). If the camera is in forced continuous AF, a bit (Fb ₈ ) To reset the bit (Fb ₁₃ ) to inhibit the auxiliary light mode and return (# 4088, # 408)
9). One shot A when not forced continuous
Reset the bit (Fb ₈ ) to indicate F (# 4090) and return.

After determining the AF mode, the microcomputer (μC) performs card data communication (II) with the IC card (CD) to determine the type of the IC card (CD) (# 420). The card data communication (II) will be described with reference to FIG.

In this data communication, first, data indicating data communication (II) is sent from the camera to the card (one serial communication) (# 320 to # 327), and the camera becomes the input side (# 330).
, And serial communication is performed ten times to obtain 10-byte data (# 335). To briefly explain the contents of this data, the first four bytes are data for controlling individual functions of the camera according to the card (details will be described later).

The next 5th and 6th bytes are the missing bytes, and the 7th and 8th bytes are to specify the number of data to be output and the start address during the following data communication (IV) (camera input). Is referred to as a “directly designated address type”. Next
The 9th and 10th bytes are for inputting necessary data by specifying the data group to be output to communication (III) and communication (IV). In particular, the 9th byte is for communication (III) and communication (III).
The tenth byte indicates communication (IV), which is called a “group designation type”. The two designation methods are switched by the card using the third byte (b ₆ ) of the above four bytes, and data communication for sending only necessary data is performed, thereby efficiently reducing time. ing. Then, returning to FIG. 6, it is determined whether or not the AF prohibition data input in the communication (II) is set (# 425).
If it is not set, or if self-timer is not being performed (SLP = 0), it is determined whether the AF start switch (S ₁ ) is ON or not based on the level of the terminal (IP ₅ ) (#
427). When the above switch (S ₁ ) is ON (IP ₅ =
Performs AF control (“L” level) (# 429) and switches (S
_The flag (S1ONF) indicating ON of ₁ ) is set (# 430).

AF based on data input from card in communication (II)
When prohibition data is set, self-timer is in progress, or switch (S ₁ ) is turned off (IP ₅ =
When the signal is at the “H” level, a signal for stopping the AF drive motor is output to the lens control circuit (LECN) to stop the lens drive (# 431) and AF is performed in order to inhibit the AF operation. sets a flag (AFNF) indicating no (# 435), further resets the flag (S ₁ ONF) indicating the ON switch (S ₁₎ (# 437). When the data setting mode is set in this way, the AF operation is prohibited even if the AF start switch (S ₁ ) is accidentally pressed during data setting by disabling AF control in the card example and giving priority to data setting. Not to be done. When the flag (AFNF) is set, a signal (AE) indicating that the image magnification data cannot be used.
Set FLAG b ₁ ) to “0” to exchange data with the card (II
Output when I).

Here, the AF control described above will be described with reference to the flowcharts shown in FIGS. 12A to 12H with reference to FIG. 14 showing a focus detection range in a shooting screen. At this time, the photometric range will also be described.

First, in FIG. 14, the outer rectangle (12) indicates a shooting screen. Among them, (LM ₁ ) to (LM ₄ ) indicate the photometry range, and (AF ₁ ) to (AF ₃ ) indicate the focus detection range. With respect to the focus detection range, the camera has a switchable spot / multipoint AF, when selecting the spot AF is, AF is performed based on the subject information of the focus detection range (AF _2), the multipoint AF There when it is selected, AF to the object is brought into focus closest to the camera from the above three ranges _{(AF 1) ~ (AF 3} ) is performed. Hereinafter, (AF ₁ ) is the first
Island, (AF ₂ ) second island, (AF ₃ ) third
I will call it an island.

To explain the AF control shown in the flowchart of FIG. 12A, first, a flag (S ₁ ONF) is determined to detect whether the AF start switch (S ₁ ) is pressed for the first time, If it is not set, it is determined that the button has been pressed for the first time, and the flag indicating AF (AFEF), the flag indicating low-con scan prohibition (LSIHF), and the flag indicating the start of low-con scan (LSFI) are reset (# 702, # 703, # 70
4), proceed to step (# 705). The low contrast scan and these flags will be described later. If it is set, the process directly proceeds to steps (# 705) to (# 704) without passing through step (# 702). Then, it is determined whether or not the lens is mounted based on the input signal from the lens (# 705). If the lens is not mounted in step (# 705), a flag (AFNF) indicating that AF is not performed is set and the routine returns (# 800).

If a lens is attached, whether the forced AF mode (forced to be the AF mode even if manual focus adjustment is selected by operation and the lens can be driven by the motor) is selected by the card Is determined (# 70
7). If the mode is the forced AF mode, the process proceeds to step (# 711).
On the other hand, when not in the forced AF mode, the focus adjustment mode
The mode / M mode is determined based on the level of the terminal (IP ₁₀ ) (# 710). If the mode is the AF mode, a bit (Fb ₁₄ ) is used to determine whether the focus lock mode is selected in step (# 711). Determined by In the M mode, the auxiliary light mode is prohibited in step (# 798) (Fb
₁₃ = 0), after executing the manual focus subroutine [MFOCUS] in the next step (# 799), set a flag (AFNF) indicating that AF is not performed (# 800),
It is determined whether or not the camera is in focus (# 780).
EF) is set (# 781), and if not in focus, reset (# 782) and the routine returns.

This manual focus subroutine is described with reference to FIG. 12 (d). First, a flag (MFF) indicating manual focus is set, and integral control is performed to control integration and execute data dump. And in manual focus, of the three islands in the AF area,
Sets a flag (AF2F) showing the second island, it calculates the defocus amount of the island (DF _2), which as a defocus amount, the process returns (# 4100～ # 41
Ten).

To illustrate shows a subroutine of the integral control in the above-described step (# 4101) in Fig. 12 (b), first, when a focus undetectable (LCONF = 1), or when not in the auxiliary light mode (Fb ₁₃ = 0) Then, the process proceeds to step (# 4163) without performing the auxiliary light emission (# 4150, # 4155). When focus detection is not possible and the mode is the auxiliary light mode, the terminal (OL) emits light before the start of integration and emits light for a certain period of time.
D) is set to “H” level for a certain period of time, and step (# 4163)
Proceed to (# 4150 to # 4160).

In step (# 4163), the count (CT) of the delivery amount (number of delivery pulses) is read and set to (CT ₁ ).
Next, integration is performed, and after the integration is completed, the count (CT) is read again, and this is set as (CT ₂ ) (# 4165, # 4167). (CT
The average of ₁ ) and (CT ₂ ) is obtained, and data is input (dumped) as (CT ₁₂ ) and the process returns. (# 4168, # 417
0).

Returning to FIG. 12 (a), when manual focus adjustment is not performed in step (# 710) or when forced AF mode is performed in step (# 707), whether or not focus lock mode is selected in step (# 711) Is determined. Step (# 7
As a result of the determinations in 10) and (# 711), if the focus lock is selected by the switch (S _Q ) in the AF mode, the drive of the lens is stopped in step (# 712), and it is determined whether the lens is in focus. It is determined whether the flag (AFEF) is set (# 713). If the flag (AFEF) is set, step (# 71)
Proceed to 4) to perform M focus control and execute step (# 78)
Go to 0). If not set, go to step (# 79
Go to 9). Here, the focus is determined because if the focus is locked after focusing, the photometric value is determined using the distance data of the subject at the time of focusing (used for image magnification) when determining the photometric value. It is.

It is determined that AF in step (# 710) of Figure 12 (a), when the focus is locked in the next step (# 711) is not made (Fb ₁₄ = 0), going to AF in step (# 715) Reset the flag (AFNF) indicating no
In step (# 717), the flag (MFF) indicating manual focus is reset. The microcomputer (μC) is C for distance measurement.
In the CD, the accumulation (integration) of charges generated according to the amount of incident light is controlled, and after the integration is completed, data obtained by digitally converting the integrated value is input (# 720). Then, in step (# 730), it is detected whether or not spot AF is used (function data
Fb ₂ ), and if spot AF (Fb ₂ = 1), the flow advances to step (# 735) to execute the spot AF subroutine shown in FIG. 12 (d). In this subroutine, a flag (AF2F) indicating that AF is being performed is set based on the second island, the defocus amount (DF ₂ ) of the second island is calculated from the input data, and this is used to drive the lens. The defocus amount is set (# 4102 to # 4110).

On the other hand, when the multi-point AF mode is selected in step (# 730) of FIG. 10 (a), the process proceeds to step (# 740) to execute the normal AF control subroutine shown in FIG. 10 (c). I do. At this time, the defocus amounts (DF) of the first, second, and third islands are calculated, and the defocus amount for the subject closest to the camera is calculated (# 4200 to # 4200).
4215).

The subroutine for determining the defocus amount is shown in FIG. 12 (f). The defocus amount is negative when the front focus is set (the subject is far from the focus position of the lens), and when the rear focus is set In the case of (the camera side from the focus position of the lens), a positive defocus amount is indicated, and its absolute value indicates the magnitude of the defocus, and three islands are required to detect a subject closest to the camera. It is sufficient to detect the maximum (including positive and negative) defocus amounts among the defocus amounts described above, and it is assumed that the main subject exists in the focus detection area.

In FIG. 12 (f), the microcomputer (μC) first resets the flags (AF1F to AF3F) indicating the island, detects the maximum defocus island, and uses the detected island defocus amount as the lens driving defocus amount. The above flags (AF1F to AF1) according to the island
Set 3F) and return (# 810 to # 865).

After calculating the defocus amount, it is checked in step (# 745) in FIG. 12 (a) whether focus detection is not possible (data is not reliable) (for example, it is determined whether the contrast is low, If the focus detection is not possible, the process proceeds to step (# 747) to determine whether or not the mode is the auxiliary light mode. If the mode is the auxiliary light mode, further focus detection is performed. Since this is useless, the flag (LCONF) indicating this is set (# 752), the flag indicating the following mode (described later) is reset (# 755), and the process returns. In step (# 747), if the mode is not the auxiliary light mode, the process proceeds to step (# 757) to detect whether the luminance is low. If the luminance is not low, it is useless to emit the auxiliary light. Controls scanning. The low contrast scan refers to performing focus detection while driving a lens to search for a focus detectable area when focus detection is not possible. This will be described with reference to FIG. 12 (h). First, it is determined whether or not a flag (LSIHF) indicating that a low-contrast scan has been performed but a focus detectable area has not been obtained is set (# 4400). ). When it is set, it returns because it is useless to perform the low contrast scan any more. If it is not set, it is determined whether a signal indicating low-con scan prohibition is input from the card (# 4405). If it has been input, the process returns without performing the low contrast scan. If not, it is determined whether or not a flag (LSFI) indicating that this flow has been executed is set (# 441
0), if not set, set it (# 441
5) A flag (FWF) indicating the extension direction is set (# 4420), and the lens drive amount n is set to a positive value (large K) larger than the maximum extension amount of the lens (# 4425), and the lens extension amount is set. Drive. When the flag (LSFI) is set, it is determined whether or not the lens has reached the extreme end of the extension or the extreme end of the extension (# 4430). Stop the lens when it comes (# 443
0), it is determined whether or not the feed was before the stop (#
4440). A hard timer (not shown) operates for the detection of the extreme end, and the hard timer is reset and started every time a pulse from the encoder comes.
When the timer measures a predetermined time, the lens is in a state where the lens cannot be driven and the leading end or the leading end is detected. And if it is a payout (FW
F = 1) This is reset (# 4445), and then the lens drive amount is set to − (K large) to control the renormalization (# 4445).
450), return. When the flag is not set, it is assumed that both the feed-out and the carry-in are performed, and it is useless to perform the low contrast scan any more. Therefore, the flag (LSIHF) is set to indicate this (# 4455), and the process returns. Then, the process proceeds to (# 752), proceeds to step (# 752), and performs the same processing as described above.

On the other hand, if the luminance is low in step (# 757) of FIG. 12 (a), it is determined in step (# 758) whether or not the auxiliary light from card mode is prohibited. ), The AF by the auxiliary light emission is prohibited, and when the mode is not the prohibition mode, the auxiliary light mode (Fb ₁₃ = 1) is set in step (# 760), and the process proceeds to step (# 755).

Next, when the microcomputer (μC) cannot detect the focus, the microcomputer resets the flag (LCONF) (# 762), and determines whether or not the lens is in focus based on the lens driving defocus amount (# 76).
If it is determined in 5) that the subject is in focus, the flag (AFEF) indicating the in-focus state is set (# 767), and the flag (AFEIF) is set, and the process proceeds to step (# 755).

If the focus is not achieved in step (# 765),
Go to 75), execute the lens drive control subroutine, and return. This subroutine is shown in FIG. 12 (e) and explained. It is determined whether or not a flag (following F) indicating the following mode is set (# 4248). If the mode is the following mode, the process proceeds to the switch (# 4330). When the flag (following F) is not set, one-shot AF (stops lens driving once focus is achieved, focus detection can be stopped at this time) or continuous AF (after focusing) It is determined from the data (Fb ₈ ) whether to follow the subject and drive the lens according to the obtained defocus amount (# 4250). In the case of one-shot AF (Fb ₈ =
0) It is determined (# 4255) whether or not the flag (AFEF) indicating the focus is set. If it is not set, or if continuous AF (Fb ₈ = 1), the step (# 4) is performed. The process proceeds to step (# 4340) via (4330) and (# 4335) to control lens driving. In step (# 4330), the flag (AFEF) indicating the focus is reset, and in step (# 4335), the lens drive amount is determined, and step (# 434)
In step 0), the lens is driven and the routine returns. The lens drive in this step (# 4340) is performed by the lens drive circuit (LEC
N) is performed by driving the lens by a value corresponding to the drive amount (N).

FIG. 12 (g) shows and describes the above-described lens drive amount determination subroutine. The microcomputer (μC) determines whether or not a flag (follow-up F) indicating the follow-up mode is set (# 4341). If not, the step (#
4345). Flag (follow F) If the area is set to defocus amount obtained this time a (DF) and _{(DF 1) (# 4342)} . Then, the defocus amount DF = DF + (DF
-DF ₂₎ (DF ₂ the previous defocus amount, i.e., obtains the addition are) in this the difference between the previous and the current defocus amount, the step (# 4345) and (DF ₁₎ as (DF ₂₎ move on. In step (# 4345), the lens drive amount (N) is obtained by multiplying the obtained defocus amount by the K value. The number of lens extension pulses at that time is read as (CT ₃ ), ΔCT ₃ −CT ₁₂ is used to determine ΔCT as the amount of lens movement from the integration center, and ΔCT is subtracted from the above N to drive the lens at the end of calculation. Return (# 4346) ~ (# 434
8).

In step (# 4255), if the in-focus flag (AFEF) is set, then step (# 425)
Proceed to 7). Then, it is determined whether or not the camera is in forced one-shot AF.
This prohibits the following mode during forced one-shot AF. When the tracking mode is the normal one-shot AF mode which is not prohibited, it is determined whether or not a flag (AFEIF) indicating from the out-of-focus state to the in-focus state is set (# 4260). If it is set, preparation processing for following determination (determining whether the subject is moving) to be described later is performed. First, in step (# 4265), registers (DF ₂ ) and (DF ₃ ) for storing the defocus amount
Resets the similar register (DF _1), then the defocus amount (DF) memory determined (# 4270), variable (N) is set to 0 (# 4275), and resets the (AFE1F) (# 4280) and return. Step (# 4260)
In, after focusing (AFEF = 1), when performing focus detection for the second and subsequent times (AFE1F = 0), proceed to step (# 4285),
The defocus amount continue to memory sequentially defocus amount in a register to memory [registers (DF ₂₎ register contents (DF _3), the content of the register (DF ₁₎ in the register (DF _2), was determined The defocus amount (DF) is stored in the register (DF ₁ )]. 1 is added to the variable (N), and it is determined whether this (N) is 2 or more, that is, whether focus detection has been performed three times after focusing. If not, the process returns without driving the lens (# 4285 to # 4305).

In step (# 4305), if the operation has been performed three times or more (N ≧ 2), the process proceeds to step (# 4310) and the past three
The defocus amount is obtained from the average of the defocus amounts of each time (the average of the contents stored in the register), and it is determined in the next step (# 431) whether or not this value is a predetermined value K or more. This means that it has been determined whether or not the subject is moving at a predetermined speed (on the image plane) in the past three focus detections. If it is less than the predetermined value, it is determined that the subject has not moved, the tracking flag is reset (# 4320), and the process returns.

This flag is used for display (in finder). On the other hand, when the defocus amount is equal to or more than the predetermined value, when the subject is moving, a flag (following F) is set as the following mode (# 4325), the lens driving amount is obtained, and the lens is driven. Return (# 4330, # 434
0).

Here, the display in the finder related to focus detection will be described based on the display in the finder shown in FIG. 13. (101) indicates focus or focus detection disabled, When set based on F), the LED is turned on by a green LED, otherwise, it is turned off when (focus F = 0). When the focus cannot be detected (LCONF = 1), the LED is turned on and off by a red LED, and when not (LCONF = 0), the LED is turned off. (102)
A focus detection area is shown. When the inner area (102) is displayed, spot AF is shown, and when only the outer area (102b) is displayed, a multipoint side distance is shown. (103) is displayed when the continuous mode or the following mode is indicated (following F = 1), and is turned off when neither the continuous AF mode nor the following mode is set. (104) “AF / M” is A
In the F mode (AFNF = 0), AF display is performed. In other cases (AFNF = 1), M display is performed. In addition, AF switch (S ₁ )
When OFF (S ₁ OFF = 0), the display in the viewfinder is turned off.

Returning again to FIG. 6, the microcomputer (μC) controls change of various data by operating various key switches (# 440).

This is shown in FIG. 15 and explained. Based on the data input from the card, it is determined whether or not the display control mode (data is being set) from the data input in communication (II) (# 905).
When the mode is the display control mode from the card (during data setting), the process returns. When not in the display control mode, it is determined whether or not a flag (SLP) indicating that the self-mode time is being measured is set (# 907). Returns when set.
When not set, the exposure mode change switch (S
_EM ) is turned on (# 910). If it is turned on, the process proceeds to the subroutine (# 915) for this change and returns (details will be described later). The above switch (S _EM ) is ON
If not, the process proceeds to step (# 920) to determine whether the function change switch (S _FUN ) is ON. When the switch (S _FUN ) is ON, the process proceeds to a subroutine (# 925) for the change.

Here, the two subroutines will be described with reference to FIGS. 16 and 18, respectively. First, the exposure mode is changed. Each time the up switch (Sup) is turned ON once, P → A
It proceeds in a cyclic manner so that it proceeds in the order of → S → M and further returns to P. Each time the down switch (Sdn) is turned ON once, it proceeds in the order of P ← A ← S ← M, and the next to P is M It advances cyclically in the opposite direction to the above-mentioned upward direction, but according to the exposure mode set by the IC card (CD) according to the E ² PROM data in the camera or the data in the custom card. Mode that has been changed and not selected is skipped.

This will be described with reference to FIG.
C) ON / OFF of the card function input in data communication (II)
Based on the signal, it is determined whether or not the function of the card is ON (# 1000). If it is not ON, enter the camera control. If it is ON, it is determined whether or not it is a custom card (# 1001). If it is not a custom card, it is determined in step (# 1002) whether or not a forced P mode signal is input from the camera. Return to the P mode (# 1003) and return. If the forced mode, enter the camera control for determining the AE mode E ² PROM set is memory to the possible AE mode within the camera. On the other hand, if the card is a custom card, the data (EECSTM
= 0, 1), the AE mode is determined from the settable AE modes stored in the card.

Only the difference in the data to be selected for the selection of the P, A, S, M modes (camera E ² PROM, card data) and the control of the selection are exactly the same, so the explanation uses the E ² PROM data in the camera. Control only. The microcomputer (μC) determines whether or not the up switch (Sup) is turned on in step (# 1004), and proceeds to step (# 1055) if not turned on. If it is ON, the step (#
Proceed to 1005), RAM of the function data of _{(Fbn) (Fb 0) (} F
b ₁₎ examined, control exposure mode as P mode determines whether the currently selected, the process proceeds to step (# 1010) if it is selected, A mode is internal or is selectable E ² Judgment by PROM bit. If selected, change exposure mode from P to A (# 1015) and change function data (Fb ₀ , Fb ₁ ) from (0,0) to (0,1) And return (# 1015). In the above step (# 1010)
If it is determined that the A mode cannot be selected, the process proceeds to step (# 1025) to determine whether the S mode has been selected. If the S mode has not been selected, the process proceeds to step (# 1040). The process proceeds to step S1 to search whether the M mode is selected or not, and to search for a mode that is sequentially selectable. Then, if there is a mode that can be selected, it is set. When the A, S, and M modes are not selectable, that is, when only the P mode is selectable, the P mode is set (# 1050).

Similarly, when the A mode is currently selected as the control exposure mode (Fb ₀ , Fb ₁ = 0, 1), it is determined whether or not the S mode is selectable. It is determined whether the M mode is selectable, the exposure mode is changed to the selectable mode, the bits (Fb ₀ ) and (Fb ₁ ) are changed, and the process returns (# 102-103).
0).

Now, when the S mode is selected as the control exposure mode (Fb ₀ , Fb ₁ = 1, 1), it is determined whether the M mode is selected. If the M mode is selected, the M mode is set and the M mode is selected. If not, return to P mode and return (# 1
035 to # 1045). When the control exposure mode is not S mode,
That is, when the mode is the M mode, the P mode is set next.
This is because the P mode is always selected in this embodiment.

In step (# 1055), the down switch (Sdn)
When the switch is turned on, the same control as that of the above-described up switch (Sup) is performed except that the direction of changing the exposure mode is different, and a description thereof will be omitted.

When both switches (Sup) and (Sdn) are OFF, the process returns without doing anything.

Next, control when the function change switch (S _FUN ) shown in FIG. 17 is turned on will be described. The microcomputer (μC) executes the flow after the step (# 1205) to change data.
The microcomputer (μC) determines whether or not the switch (S _SE ) indicating the function to be changed is ON (# 1205). If the switch (S _SE ) is ON, the function to be changed is set to the bits (Fb ₉ , Fb). ₁₀ )
(# 1225), and proceed in the order of +/- → S / C → S / A, and cyclically proceed to return to +/- after S / A, and the bits (Fb ₉ , Fb ₁₀ ) Change the data of.

In step (# 1205), if the switch (S _SE ) is not turned on, the process proceeds to step (# 1265). In step (# 1265), it is determined whether the up switch (Sup) is turned on. If the switch is turned on, the function to be changed is determined from the data (Fb ₉ , Fb ₁₀ ) ( # 128
0), if the function is in the +/- mode (# 1285), add 0.5 to the exposure correction amount (ΔEv) and proceed to a subroutine (# 1287) for determining the magnitude. This subroutine is shown in FIG. 18. If both corrections (ΔEv) are positive, the data Fb ₄ , Fb ₅ = 0, 1 as the positive correction, and the data Fb if the correction is one-side.
₄ , Fb ₅ = 1, 0, and furthermore, if the correction is zero, it is determined that there is no correction and the data Fb ₄ , Fb ₅ = 0, 0 is returned (# 1350
~ # 1370).

Referring back to FIG. 17, if the mode is the S / C mode, the data (Fb ₃ )
To determine whether the current mode is single shooting (S) or continuous shooting, and change the data so that it is the opposite of the current mode (# 1
295), return. If neither of the above two modes (+/- mode, S / C mode), ie, S / A mode, the current mode is spot AF (S) or multipoint AF (A)
Or the data is (Fb ₂₎ by determining, change data (Fb ₂₎ so that opposite current mode (# 1300),
To return.

In step (# 1265), the up switch (Sup)
If it is not turned on, the process proceeds to step (# 1305), it is determined whether the down switch (Sdn) is turned on. If it is not turned on, the process returns. If ON, + /
In the minus mode, since the flow is the same as that when the up switch (Sup) is ON except that 0.5 Ev is subtracted from the exposure correction amount (ΔEv), the description is omitted (# 1310 to # 13)
40).

Referring back to FIG. 12, when both the exposure mode change switch (S _EM ) and the function change switch (S _FUN ) are OFF, the aperture value (Av), the shutter speed (Sv) by the up switch (Sup) and the down switch (Sdn) The process proceeds to a step (# 927) showing a subroutine for changing Tv).

This subroutine is shown in FIGS. 22 (a) and 22 (b) and will be described. First, the microcomputer (μC) first operates the up switch (Su).
In step (# 1800), it is determined whether or not p) is turned on. If not, the process proceeds to step (# 1805), and it is determined whether or not the down switch (Sdn) is turned on.
If not, return. Up switch (S
When (up) is ON, the process proceeds from step (# 1800) to step (# 1810) to determine whether or not the mode is the M mode. Here, when the mode is the M mode (Fb ₀ , Fb ₁ = 1, 0), the process proceeds to step (# 1811) to determine whether or not the aperture change switch is turned on. 1
830) and thereafter, if not turned on, the process proceeds to step (# 1850) to change the shutter speed. First, let's explain how to change the shutter speed.
And proceed to step (# 1855). Step (# 1855)
In, the set shutter speed is the fastest (Tvmax)
It is determined whether or not the speed exceeds the maximum speed, and if it does, the speed is limited to the maximum speed (# 1860) and the process returns. If not exceeded, skip step (# 1860) and return.

If the mode is not the M mode in step (# 1810), and if the mode is the P mode in which it is sequentially determined whether the mode is the P mode or the A mode in steps (# 1815) and (# 1820) (Fb
_(0,1 = 0,0) It is determined whether or not the P shift is prohibited (# 1817). If the P shift is prohibited, the process returns. If not, go to step (# 1830). In step (# 1830), 0.5Ev is added to the aperture value (Av), and it is determined whether or not this exceeds the controllable maximum aperture value (Avmax) (# 1835). If it exceeds, the aperture value (A
v) set the maximum aperture (Avmax) (# 1840)
If not, the process goes to step (# 1845) without doing anything to determine whether the mode is the P mode. If the mode is the P mode, the process proceeds to step (# 1) in the flowchart of FIG.
879). When the mode is not the P mode, the process returns. If the mode is not the P mode in step (# 1815) (Fb _0,1 ≠ 0,
0), it is determined whether or not the mode is the A mode (# 1820). If the mode is the A mode (Fb ₀ , Fb ₁ = 0, 0), the process proceeds to the step (# 1830) to control the aperture value (Av) to increase. If neither mode is set, that is, if the mode is the S mode (Fb ₀ , Fb ₁ = 1, 1), the process proceeds to step (# 1823) to control the shutter speed (Tv) to increase.

If the down switch (Sdn) is ON in step (# 1805), the process proceeds to step (# 1865) in FIG. 22 (b), and it is determined whether or not the mode is the M mode. (Fb ₀ , Fb ₁ = 1, 0), it is determined whether or not the aperture change switch (S _AU ) is turned on (# 1877). If it is turned on, it is determined that the aperture is changed, and the process proceeds to step (# 1885). If not, the process proceeds to step (# 1905) as a shutter speed change. In step (# 1905), from the set shutter speed
0.5Ev is subtracted and this is the camera's minimum shutter speed (T
vmin) is determined (# 1907). If it is slower, the shutter speed is limited to the minimum shutter speed (# 1908). If not, the process returns without doing anything. When it is determined in step (# 1877) that the aperture change mode is set (S _AU ON), the aperture value (Av) is reduced in step (# 1885), 0.5Ev is subtracted, and then the value is reduced in step (# 1890). Aperture (A
vo) It is determined whether or not the aperture value is smaller. If the aperture value is smaller, the aperture value is set to the open aperture value (Avo) (# 1895).

In step (# 1890), if the aperture value (Av) is not smaller than the open aperture value (Avo), the process proceeds to step (# 18).
Skip step 95) and go to step (# 1900). If the determination in this step (# 1900) is the P mode, the second
1 The control flow for increasing the aperture value in FIG.
Go to 0) and return if not in P mode.

In step (# 1865), when the mode is not the M mode,
In step (# 1870), it is determined whether the mode is the P mode. Here, when the mode is the P mode (Fb _0,1 = 0,0), it is determined whether or not the P shift is prohibited (# 1872). If the P shift is prohibited, the process returns. If not, the process proceeds to step (# 185). If the mode is not the P mode in step (# 1870) (Fb ₀ , 1 ≠ 0,0), the step (# 1
The process proceeds to 875) to determine whether the mode is the A mode. If the mode is the A mode, the process proceeds to the flow for controlling the aperture value down from step (# 1885). Proceed to 1879) to control the shutter speed down.

In Fig. 15, when the control of the settings of (Av) and (Tv) is completed,
It is determined whether the _normally open self switch (S _SELF ) is turned on. When it is OFF (IP ₁₂ = "H"), it returns immediately.

The self subroutine when ON (IP ₁₂ = "L")
Referring to FIG. 19, a self-in-progress flag (SELF
When F is set, reset it (#
945), exits the self mode, and if not set, sets the flag (SELF) to execute the self mode (# 950) and returns respectively.

When the control of the data setting shown in FIG. 15 is completed as described above, the microcomputer (μC) proceeds from step (# 440) to step (# 445) in FIG. 6 to transmit the photometric data from the photometric circuit (LM). Enter and create spot metering values to be used for exposure. Here, the photometric range shown in FIG.
The creation of photometric values will be described with reference to the flowchart of inputting and creating photometric data of the microcomputer (μC) shown in FIG.

In FIG. 20, first, the microcomputer (μC) determines in step (# 1600) whether or not a flag (AELF) indicating AE lock is set, and when the flag (AELF) is set, The process returns because the photometric value is not updated. When the flag (AELF) is not set,
The terminal (CSLM) is set to the “H” level, a photometric data output command is issued to the photometric circuit (LM), and serial communication is performed (# 1605, # 1610).

This communication, and inputs the luminance values of the four metering range shown in FIG. 14 a (Bv ₁ ~Bv _4). When communication is completed, the terminal (CSLM) is set to the “L” level (# 1615). Then, in step (# 1617), the value of Bv ₂ is entered in Bvc, and
18) B _UAUE Ask for. Thereafter, the process proceeds to (# 1622), and it is determined whether or not the flag (AFEF) indicating that the mode is not the AF mode is set. In step (# 1624), the flag (LCONF) indicating that focus detection is not possible is set. Judge whether or not
When either of them is set, the process proceeds to the above-mentioned step (# 1660), and a small photometric range (LM ₂ ) at the center is set.
Is the spot value (Bvsp). Flags (AFNF) and (LC
When ONF is not set, the distance is calculated from the delivery pulse, and the image magnification β is calculated from β = focal length / distance based on the calculated distance information and focal length information (# 1625), and the next step is performed. In (# 1630), it is determined whether the image magnification β is equal to or more than a predetermined value (K),
Determine the size of the subject on the shooting screen. If the value is equal to or more than the predetermined value, the subject is determined to be large, and in step (# 1640), the luminance values (Bv ₁ ), (LM ₁ ), (LM ₂ ), and (LM ₃ )
The average of (Bv ₂ ) and (Bv ₃ ) is defined as a spot photometric value (Bvsp).

If the image magnification β is less than the predetermined value, the photometry range including the focus detection range used for focus detection is set as the photometry value (Bvsp) of the main subject. In the present embodiment, of the flags indicating the focus detection ranges, the range is determined by which flag (AF1F to AF3F) is set, and the flag (AF1F)
Is set, the luminance value (Bv ₁ ) of the photometry range (LM ₁ ), and if the flag (AF2F) is set, the luminance value (Bv ₂ ) of the photometry range (LM ₂ ) Is not set, that is, the third island (AF ₃ )
When the defocus amount of is selected, the brightness value (Bv ₃ ) of the photometric range (LM ₃ ) is set to the spot photometric value (Bvsp), respectively.
(# 1645 to # 1665).

When the spot metering value is determined in this way, the microcomputer (μC) proceeds to step (# 450) in FIG.
Control relating to locking is performed, and this will be described with reference to the flowchart shown in FIG.

First, in step (# 1740), it is determined whether or not the AE lock switch (S _AEL ) is ON, and if not, the flag (AELF) is reset (# 1755). ON
The flag (AELF) is set (# 174
5) Reset and start the timer (T ₁ ) for holding power (# 1750) and change the spot metering value Bv ₂ to the spot value (Bvsp)
And return (# 1752). Thus, when the AE lock switch (S _AEL ) is ON, the power is kept.

In FIG. 6, when the control of the AE lock is completed, the microcomputer (μC) performs data communication with the card for the third time in step (# 455). This data communication will be described with reference to FIG. 5 (c). The microcomputer (μC) determines whether communication (III) is present or not based on a signal input from the card, and determines whether communication (III) is present. When you return. If the card is not installed, it will be blank. If there is communication (III), the terminal (CSCD) is set to the "H" level (# 350), data is set (# 352), and the data is output to the IC card (CD) (# 355).

Next, the communication is performed once (# 357), and after waiting (# 360), the data output subroutine (# 362) is executed. After the data output is completed, the terminal (CSCD) is set to "L" level. (# 36
5) Return.

This data output subroutine is described with reference to FIG. 5 (g). First, it is determined whether or not a group is designated based on the data communicated at the time of communication (II) (# 362-1). If a group designated (sports cards, snap cards, etc.), performs control to output a group of data of the group designated _{G 0, G 1, G 2} , G 3 on the card. First, set the address of the group G ₀ (# 362-2), carried out 15 times serial communication (# 362-3).

The data of G ₀ , G ₁ , G ₂ , G ₃ are data for lens driving and AE calculation, G ₃ LPmax ... lens maximum feed amount and then determines the data obtained by communication whether data of the group G ₁ is required (II) (# 362-4). Returns if not needed. If it is necessary to set the address G ₁ of the data in G ₁ (# 362-5), three times the serial communication (# 362-6). Next, it is determined whether the data is needed G _2, if necessary to set the address G _2, performs serial communication twice. Then it is determined whether the required data G _3, if necessary to set the address G _3, and then returns performed once serial communication. If the group is not designated, the address is set based on the address having the necessary data input from the card (# 362-7), and the serial communication is performed by the number of times of the serial communication input from the card (# 362-8). Note that there is no address designation type in communication (III).

When the above-described card data communication (III) is completed in FIG. 6, the microcomputer (.mu.C) proceeds to step (# 460) and performs exposure calculation.

FIG. 23 to FIG. 27 show the flow of this control. In FIG. 23, the microcomputer (μC) first sets the light emission signal, which is output data to the electronic flash device, to 1, forced ON = 0, forced OF
Initialize F = 0, GN control release = 0 (# 2000 to # 200
3). Next, step lens (# 2004) is determined from the lens data input whether the mounted, when not mounted, the actual diaphragm metering as well as metering range photometric value (LM ₄₎ (Bv _AM) ( Instead of this, a photometric value obtained by averaging the whole value may be used) and the film sensitivity (Sv) and the exposure compensation value (ΔE
v), calculate the shutter speed, and return (#
2005). If a lens is attached, it is determined whether or not the camera is in the forced P mode based on data input from the card (# 200).
6) In the case of the forced P mode, the routine returns without performing the exposure calculation. If the mode is not the forced mode, an exposure calculation corresponding to each exposure mode is performed (# 2010 to # 2040).

Therefore, the exposure calculation in the P mode is performed by using FIGS. 24 (a) to 24 (c).
First, in step (# 2100) of FIG. 24 (a), the microcomputer (μC) determines the backlight state by determining the photometric value (Bv _AM ) of the photometric range (LM ₄ ) and the step (# 445).
It is determined based on whether or not the difference from the spot photometric value (Bvsp) obtained in step 2 is equal to or greater than 2 Ev (# 2100). If more than 2 Ev, the switch S _M of the electronic flash device is mounted (electronic flash device
Determines whether ON) or not at the step (# 2105), mounted is, in the photometric value of the exposure values of the control (Ev) of the metering range (LM ₄₎ (Bv _AM) Ev from such = Ev _AM + Avo + Sv- 1 + ΔEv (# 2115). Here, the reason why 1 is subtracted is that the background is over 1 Ev to make the background look like backlight. It is to be noted that the main subject is about to be properly exposed by the flash from the electronic flash device. And aperture value (Av), shutter speed (Tv)
The program proceeds to a subroutine (# 2120) of the program I which determines the forcible condition. Further, in step (# 2170), forced ON is set and the process returns. The program I is shown in FIG. 24 (b) and explained. When the control value (Tvc) of the shutter speed is tuned to Tv =
7 (SS = 1/125), the aperture value (Av) is obtained by subtracting 7 (shutter speed) from the exposure value (Ev), and whether this aperture value (Av) is greater than 7 (F = 11) If it is larger, the control aperture value (Avc) is limited to 7 and the process returns (# 2215). If the aperture value (Av) is 7 or less, it is determined whether the calculated aperture value (Av) is smaller than the open aperture value (Avo). If the aperture value is smaller, the open aperture value (Avo) is controlled as the control aperture value (Avc). (# 2225), if not smaller, the calculated value (Av)
Is the control aperture value (Avc) (# 2230). Then, it is set to 1 to release the GN restriction of the electronic flash device (# 2235), and at the same time, a light emission signal is set (# 2240), and the process returns. This is due to the fact that if the GN is restricted, the main subject may not be appropriate with strobe light, such as when the subject is backlit, and the strobe light is not used. doing.

Returning to FIG. 24 (a), in step (# 2105)
When the electronic flash device (FL) is not mounted, the control exposure value (Ev) is set to Ev = Bvsp + Avo + Sv + ΔEv from the spot range (Bvsp) of the photometric range in order to properly expose the main subject.
(# 2130), aperture value (Av), shutter speed (T
The program proceeds to the subroutine (# 2135) of the program II for obtaining v), and returns through the step (# 2170).

FIG. 24 (c) shows and explains this subroutine.
First, in step (# 2250), the aperture value (Av) is set to Av = 5 / 8Ev−25.
/ 8, it is determined whether or not this aperture value (Av) is greater than the maximum aperture value (Avmax) of the lens (# 2255). If it is larger, the maximum aperture value (Avmax) is controlled as the control aperture value (Avc) (# 2260) and proceed to step (# 2280). Step (# 2
In 255), when the aperture value (Av) is equal to or less than the maximum aperture value (Avmax), it is determined whether the aperture value (Av) is smaller than the open aperture value (Avo). Is the control aperture value (Avc), if not, the calculated aperture value (Avc)
The process proceeds to step (# 2280) (# 2265 to # 2275) with v) as the control aperture value (Avc).

In step (# 2280), the shutter speed (Tv) is obtained by subtracting the control aperture value (Avc) from the exposure value (Ev), and in the next step (# 2285), is this higher than the maximum shutter speed (Tvmax)? It is determined whether or not the control shutter speed (Tvc) is limited to (Tvmax) (# 2290) if the speed is high, and if not, the control shutter speed (Tvc) is reduced from the lowest shutter speed (Tvmin) in step (# 2292). Is determined to be slow. If it is slow, (Tvmin) is set as the control shutter speed (# 2293). If not, the calculated shutter speed (Tv) is set as the control shutter speed (Tvc) (# 2295). Reset the light emission signal to prohibit (= 0) (# 229
8), return.

Returning to FIG. 24 (a), in step (# 2100), B
When the difference between _UAM -Bvsp is less than 2, the process proceeds to step (# 2145) as a non-backlight state, metering range (LM ₁₎ ~ (LM ₄₎
From the average photometric value (Bv ₁ + Bv ₂ + Bv ₃ + Bv ₄ ) / 4 to the exposure value (E
v), determine the aperture value (Av) and shutter speed (Tv) by the above program II (# 2150), and if the shutter speed (Tv) is less than the camera shake warning speed (Tv = 6, 1/60) It is determined whether or not there is (# 2155). Then, when the speed is lower than the camera shake warning speed, it is determined whether or not the electronic flash device is mounted (# 2160). If the electronic flash device is mounted, the program I for strobe light emission is executed (# 2165) and the process returns. .

If it is not mounted (including the power OFF of the flash device), set forced ON in step (# 2170) and return. If less than the camera shake warning, return without doing anything.

Next, a flowchart for determining the aperture value (Av) and the shutter speed (Tv) in the A mode will be described with reference to FIG. 25. First, it is determined whether or not the electronic flash device is mounted. Control shutter speed (Tv
c) is set to 7 (1/125), and the set aperture value (Av) is returned as the control aperture value (Avc) (# 2300, # 2305 and # 234)
Five). If it is not attached, the exposure value (Ev) is obtained from the average photometric value, and the value obtained by subtracting the set aperture value from the exposure value (Ev) is used as the shutter speed (Tv) (# 2315, # 232)
0). Then, in the next step (# 2325), the maximum shutter speed (Tvma) at which the shutter speed (Tv) can be controlled.
x) It is determined whether or not it is greater than the value. If it is greater than the value, the maximum shutter speed (Tvmax) is set to the control shutter speed (Tvc) in step (# 2330), and the process proceeds to step (# 2345).
If not, it is determined in step (# 2331) whether or not the speed is lower than the minimum controllable speed (Tvmin).
If the speed is low, (Tvmin) is set as the control shutter speed (Tvc) in step (# 2333). If the speed is not lower than (Tvmin), the calculated value (Tv) is set in step (# 2335) as the control shutter speed (Tvc) As each step (# 2345)
Proceed to. In step (# 2345), the set aperture value (Av) is set to the control aperture value (Avc).

Next, the control in the S mode will be described with reference to FIG. 26. First, in step (# 2400), the exposure value (Ev) is obtained from the average photometric value and the like, and it is determined whether or not the electronic flash device is mounted. If it is determined in (# 2405) and the camera is mounted, it is determined in step (# 2415) whether or not the shutter speed (Tv) is 7 or less, and if it is 7 or less, the set shutter speed (Tv) is controlled. Set shutter speed (Tvc) (# 242
0), when exceeding 7, the tuning speed 7 is set as the control shutter speed (Tvc), and the process proceeds to step (# 2430).

In step (# 2430), the aperture value (Av) is obtained by subtracting the control shutter speed (Tvc) from the obtained exposure value (Ev), and whether or not this aperture value (Av) is smaller than the open aperture value (Avo) (# 2435), and if smaller, the control aperture value (Avc) is set as the anatomical aperture value (Avc) (# 2440), and the process returns. On the other hand, if the aperture value (Av) is not smaller than the open aperture value (Avo), it is determined whether or not the aperture value is larger than the maximum aperture value (Avmax) (# 2445). Is set as the control aperture value (Avc) (# 2450). If not, the calculated aperture value (Av) is set as the control aperture value (Avc) (# 2455), and the process returns.

In step (# 2405), when it is not mounted, the set shutter speed (Tv) is set as the control shutter speed (Tvc) (# 2460), and the process proceeds to step (# 2430).
Execute the subsequent flow.

Next, when the mode is the M mode (see FIG. 27), the aperture value (Av) preset in step (# 2515) is changed to the control aperture value (A
vc), and returns the shutter speed (Tv) as the control shutter speed (Tvc) in the next step (# 2520).

Returning to FIG. 6, when the exposure calculation (# 460) is completed, the microcomputer (μC) of the camera determines whether there is a signal requesting extension of the time required from the card to communication (IV) (# 4).
61) In some cases, wait for 10 msec (# 463). If there is no signal to request, do nothing.
The second data communication is performed (# 465). This request signal is sent because the calculation time becomes longer in the case of a defocusing card. FIG. 5 (d) shows a flowchart of this control. To begin with, it is determined whether or not communication (IV) is necessary based on the signal obtained in communication (II). If necessary, connect the terminal (CS
CD) is set to "H" level (# 367), serial communication is performed with the IC card (CD) (# 375), and the IC card is notified that the IC card is the output side. Here, wait for time (# 37
7) Serial communication is performed with the camera as the input side, and data is input from the IC card (CD) (# 382). When this data communication is completed, the terminal (CSCD) is set to "L" level and the routine returns.

The subroutine for data input in the step (# 382) is described with reference to FIG. 5 (h). First, in step (# 382-1), it is determined whether or not a group is designated. The register address for data input in IV) is set to the address input from the card (# 382-11), serial communication is performed the number of times input from the card (# 382-12), and the routine returns.

If it is a group designation, according to each communication number (G ₀ , G ₁ , G ₂ ). The address of the input register in the camera is set, and a predetermined number of serial communications are performed.
The contents of the data are as follows for the address designation type: (i) for a custom card.

(Ii) Bracket card, H / S card ΔAv... Aperture shift amount ΔTv... Shutter speed shift amount Next, description will be given for the case of group designation.

G ₀ …… Display data being set …… 9 serial communications G ₂ ··· ΔLp ··· Lens drive pulse ··· One serial communication Returning to FIG. 6, when data communication (IV) with the card is completed, the microcomputer (μC) outputs data to the electronic flash device (ST). (# 467). Referring to FIG. 11 (b), the microcomputer (μC) first determines whether the card function is ON based on data input from the card (# 467-
1) If not ON, proceed to step (# 467-10). When it is ON, the forcible ON, the forcible OFF, the release of the GN restriction, and the light emission are performed in steps (# 467-2), (# 467-4) and (# 467-6) based on the control signal of the electronic flash device input from the card. )(#Four
67-8) and the control signals are forced ON, forced OFF, GN respectively
When the display indicates that the restriction has been released and the light emission has not been performed, these are set in steps (# 467-3), (# 467-5), (# 467-7), and (# 476
-9), and when the above four are not indicated respectively, (# 467-3 '), (# 467-5'), (# 467-7 ')
At (# 467-9 '), the signals are reset, respectively, and step (# 467
Go to -10). In step (# 467-10), the terminal (CSF
L) is set to the “H” level for a predetermined time (T ₂ ) to indicate that the electronic flash device is in the data output mode from the camera.
The camera outputs the input / output switching circuit (I / OCG) on the output side ("H")
Then, serial communication is performed once (# 467-1 to # 467-13) after a predetermined process in the electronic flash device is performed.

When the data communication with the electronic flash device is completed in FIG. 6, the microcomputer (μC) executes the flow of the card control in step (# 470). This flow shows the determination as to whether or not to control the camera using an IC card (in this case, a program card) based on the input data, and the operation of the camera when performing the control. 28
Referring to the figure, the microcomputer (μC) first determines in step (# 2610) whether or not to control the camera by the card based on the data input from the IC card. If the camera is not to be controlled by the card (CDFNF = 0) ) Returns.

If it is determined that the camera is controlled by an IC card, it is determined whether the data input in communication (IV) is an aperture (Av) shutter speed (Tv), and (Av) (Tv) data , The control aperture value (Avc), the control shutter speed (Tvc), and the film sensitivity (Sv) are each determined by data input from the IC card (# 2615 to # 2630).

If the above data is not (Av) (Tv) data, (ΔA
v) and (ΔTv) are determined (# 263
Five). If the data is not (ΔAv) or (ΔTv), the process returns. (ΔAv), (ΔTv) data,
(ΔAv) is added to the control aperture value (Avc), (ΔTv) is added to the control shutter speed (Tvc), and the film sensitivity (S
v) plus (ΔSv) and return (# 2640 to # 265)
0).

In FIG. 6, when the routine for determining and controlling the camera by the IC card as described above and the control routine (# 470) are completed, the process proceeds to display control (# 471).

Table 5 shows the contents of data sent from the microcomputer (μC) to the display control circuit, which will be described.

Shutter speed: Here, shutter speed data or card name data is stored using one byte.

Aperture ............ aperture or numerical data (setting data at the time of the card) is memory, b ₀ is blinking its data.

AE mode ............ b _0, b ₁ is currently in P, A, S, one of the M mode, eight data b ₄ ~b ₆ is mode by the IC card setting is Each has been entered.
b _2, b ₃ flashing data b ₄ ~b _6, lighting, control is performed in the dark.

Number or numbers (setting when the card data) of the film sheets ............ film data is memory, b ₀ is turned of this data, a control data off.

Is data for displaying indicia and Vero indicia Patokan Bello display ...... Patokan, b ₀ is turned on, a control data indicating off.

Card display: b ₁ , b ₂ (address DP _6H ) are the data for turning on / off the display of +/- for exposure compensation, b ₅ , b
₆ (address DP _6H ) is for controlling single-shot / continuous shooting and display extinguishment; b ₀ , b ₁ (address DP 7 _H ) is control data for blinking, lighting, extinguishing the card display; b ₄ , b ₅ (Address DP _7H )
Indicates control for switching display and extinguishing of multipoint AF / spot AF, respectively.

Data change display: i indicating the data change and lighting
This shows the control of turning off the light.

Control data …… Data indicating the sequence of the camera, b ₀ … All off (main switch OFF) b ₁ … Standby (main switch ON, S ₁ OFF) b ₂ … Card display b ₃ … Initial load b ₄ … S ₁ ON B ₅ … Rewinding LED infinder display… b ₀ … Indication of focus indication b ₁ … In focus / non-detection b ₂ … Tracking mode enable / disable b3… Multi-point AF enable / disable None b ₄ ... Indicates AF / M.

A flowchart of the display microcomputer for controlling the display is shown in FIG. 29 (b) and will be described. Display control circuit (DI
When a signal that changes from “L” to “H” from the camera microcomputer (μC) terminal (CSDISP) is input to the SPC, the 29th
The interrupt shown in FIG. 8B is executed, and display data (see Table 5) from the camera is input by performing serial communication for 11 bytes (# D-5). It is determined from the input control data whether or not the mode is the all-off mode (# D-10). If the mode is the all-off mode (DP _9H , b ₀ = 1), it is set to the all-off mode in which nothing is displayed (#D). -15). When not in all-off mode (DP _9H , b ₀ =
0), and determines whether or not the apparatus is in the standby mode (# D-2).
0) In the standby mode (DP _9H , b ₁ = 1), the display of the currently set AF mode is displayed based on b ₀ , b ₁ of DP _3H (# D-25). The display of the card is displayed based on the information of DP _6H and DP _7H , and the position of the cursor (Δ) is displayed based on the data of the DP _8H data change display.
One example is shown in FIG. 29 (c). FIG. 29 (c) shows the display of the P mode, the presence of the card function, the mark (cursor) at the position of the exposure compensation, the absence of the exposure compensation function, the single shooting mode, and the multi-point AF.

When the standby mode is not set in the step (# D-20), it is determined whether or not an initial load is performed (# D-20).
-45). When the initial load (DP _9H , b ₃ =
1), the display of the number of film frames (DP _5H), displays only Patokan-Perot display, otherwise turned off (# D-50~ # D-
60). FIG. 29 (d) shows that the film is loaded and the initial load is performed. During rewinding (DP _9H , b ₅
= 1), and the “−−” mark in FIG. 29 (d) indicates the number of films being rewound at that time.

If no rewinding is being performed, it is determined whether or not a card is displayed (# D-70). When the card is displayed (DP _9H , b ₂ = 1), DP _1H
Is decoded, the card name is displayed, the numerical value is displayed based on the data of DP _2H , and the display (selected) selected by the IC card is displayed using b _{2 to} b ₆ of DP _3H.
Numerical display based on DP _4H data, and b ₀ and b _{1 of} DP _7H
(D-75 to # D-).
95). The display of this card will be described later in detail. Step If not card display mode (# D-70) determination of the step switch proceeds to (# D-105) (S 1) is ON
It is determined whether or not it is turned on. If it is ON, the display in the infinder is performed based on the infinder information (# D-110). Go to # D-115).

Thereafter, the shutter speed (SS) displayed based on the information of the DP _IH, aperture value based on the information of the DP _2H, b of DP _{2H 0,} b ₁
Display of AE mode based on the display, display of the number of films based on DP _3H , display of Potokan based on DP _4H , display of card related based on information of DP _6H and _7H , data change based on information of DP _8H ( Δ) display AF mode and self display based on b ₆ and b ₇ of DP _9H and b ₀ of DP _10H (# D-115 to # D-1
55). An example of this will be described with reference to a flowchart of display control (display data creation) on the camera side shown in FIG. 29A. First, in step (# 2700), it is determined whether or not card display control is to be performed. Judgment is made based on the data obtained in communication (II), and in the case of card display control, a mode is set in which the powerful information from the card is output as it is, and serial communication is performed 12 times (# 2705 to 2730). On the other hand, when the card display control is not performed, the serial communication is performed 12 times (# 2710) as a mode for outputting data created by the camera (shutter speed aperture value, number of films, etc .-- see FIG. 29E). # 2720). Next, in step (# 2735), it is determined whether or not the card has the authority to control the buzzer based on the data input from the card. If the card has the control right, the camera shake warning signal from the card is issued. It is determined whether or not there is (# 2740). In the case of a camera shake warning, a buzzer warning is issued (# 2745) regardless of whether or not a buzzer warning is issued by the custom card, and the process proceeds to step (# 2765). If it is not a camera shake warning, the process proceeds to step (# 2765) without issuing a buzzer warning. If the card does not have the buzzer control right, it is determined whether or not the shutter speed determined by the camera is less than 6 (# 2750). If not, the process proceeds to step (# 2765).
Is less than 6, it is determined on the basis of the data input in communication with the card function is ON (II), if not turned ON, determines whether the buzzer alerts the data of E ² PROM in the camera (# 2754), a buzzer warning is given if there is, and no buzzer warning is given if there is no step (# 2754).
765).

If the card function is ON, it is determined whether or not the card is a custom card (# 2758). If the card function is not a custom card, the process proceeds to camera control to perform the above-described control. If it is a custom card, communication (IV) entered from the card
It is determined whether there is a buzzer based on the data of (# 276
0), if there is a buzzer warning (# 2756), step (# 2
Proceed to step (765), and if not, proceed to step (# 2765) without warning the buzzer. In step (# 2765), determines whether there is a signal of the write control to the E ² PROM from custom card, writing of data from the custom card in communication (IV) when there is it (# 2770) , Steps (# 277
Proceed to 5). When there is no write control signal, the process skips step (# 2770) and proceeds to step (# 2775).

Step (# 2775) is a subroutine for setting a mode.

Here, the mode setting subroutine will be described with reference to FIG. 29 (f). In this case, it is determined whether or not the mode currently set in the camera is the newly set mode. In this case, the mode is shifted to another set mode. For example, if the exposure A mode is currently selected, but the IC card removes the A mode from the exposure mode selection, the A mode display and control as before may not be performed. Has been prevented.

Now, in the flow of FIG. 29 (f), the microcomputer (μ
C) are to determine first settable exposure mode is changed E ²
The data in the PROM and the data input from the IC card (CD) are compared and determined (# 3203).
If there is a change), the data (Fb ₀ , Fb ₁ ) is set to (0, 0) to force the exposure mode to the P mode (# 3205),
To return.

When the display control (# 471) described above with reference to FIG. 6 is completed, the microcomputer (μC) proceeds to step (# 472) to determine whether or not self-timekeeping is in progress.
= 1) It is determined whether 10 seconds have elapsed (# 474). If the time has elapsed, the process proceeds to step (# 490) to perform exposure control. If 10 seconds have not elapsed, step (# 180)
Return to If the self-timer is not in progress (SLP = 0), the flow advances to step (# 473) to determine whether or not the release switch (S ₂ ) is turned on. If it is not turned on (IP ₇ =
In "H"), the process proceeds to step (# 520), all interrupts are permitted, and the process returns. When ON (IP ₇ = "L")
In step (# 475), it is determined whether or not release prohibition data obtained in communication (II) is set. If the data is set, the process proceeds to step (# 520). On the other hand, when it is not set, it is determined whether or not the self mode is selected (# 476). When it is not selected (SELFF =
0), and proceed to step (# 481).

When it is selected (SELFF = 1), the self-timer flag (SLP) is set (# 477), and the timekeeping timer (apart from holding the power supply) is reset-started (# 47).
8). Then, in order to hold the power, the flag (OPF) is set (# 479), the AE lock flag (AELF) is set (# 480), the measured value is fixed, and the process proceeds to step (# 180).

Step of FIG. 6 when not self mode (# 475), the (IP ₁₂ = "H") step proceeds to (# 481), (manual focus adjustment of the focus lock or focus detection only) manual focus mode [MFF / 1 Is determined, and if the mode is the manual focus mode, the process proceeds to step (# 490). If the mode is not the manual focus mode, the process proceeds to step (# 485). In step (# 485), it is determined whether or not the flag (AFEF) indicating the focus is set. If not, the process returns through step (# 520). If it is set, the process proceeds to step (# 490) to prohibit all interrupts, and the communication (V) with the card is performed in step (# 42) in the same manner as when the AF mode is not set. This is shown in FIG. 5 (e) and described.

First, the microcomputer (μC) determines the presence / absence of communication (V), returns if there is no communication (V), and returns to the terminal (CSC
D) is set to "H" level (# 390), data indicating communication (V) is set (# 391), and the camera side is output (# 392), and serial communication is performed once (# 393). Next, data is set, and serial exchange is performed once using the camera as an output. After waiting for time (# 394), the camera side is input (# 385), serial exchange is performed eight times (# 396), the terminal (CSCD) is set to "L" level (# 397), and the routine returns. This data is data for the memory of the memory card.

Here, the data contents are shown and explained in the CACD table. (I) Number of films (ii) Open F _NO (iii) Control F value (iv) Control shutter speed (v) Exposure compensation value (vi) Exposure mode (vii) Exposure Mode (viii) Film sensitivity. When the communication (V) is completed, the microcomputer (μC) proceeds to step (# 495) to perform exposure control (described later),
Thereafter step (# 500) in for 1 frame hoisting film (which will be described later), a release switch (S ₂₎ it is determined whether the ON in step (# 505), if the ON (IP ₇ =
(L)), it is determined whether or not a signal for forced continuous shooting from the card is input. If the input has been made, the process proceeds to step (# 515). If the input has not been made, it is determined in step (# 510) whether or not the continuous shooting mode has been set. If the continuous shooting mode has been set (Fb ₃ = 1) ), All interrupts are permitted in step (# 515), and the routine proceeds to [SO]. When the continuous shooting mode is not set (Fb ₃ = 0), the process returns to step (# 505), and waits for the release switch (S ₂ ) to be turned off. I do.

Next, the exposure control subroutine of the above step (# 495) will be described with reference to FIG. First step (# 280
At 5), the terminal (CSST) is set to the “H” level for (t ₃ ), indicating that the electronic flash device (ST) is in the exposure mode. Then, the film sensitivity (Sv) is D / A converted as analog data to a light control circuit (STC) and then output (# 2810).

In the next step (# 2815), aperture control is performed based on the control aperture value (Avc), and mirror up is started. Next, the lens is driven during the release. This is shown in FIG.
First, it is determined whether or not the card function is ON (# 2822-0). If the card function is ON, it is determined whether or not there is a snap drive bit signal indicating lens drive during release input from the IC card. (# 2822-1) determined, if there is no signal indicating the card function OFF or snap drive waits for the mirror-up is completed the program proceeds to step (# 2822-4), the mirror-up is completed (IP ₂₀ = “L”). If there is the above signal, it is driven by the lens drive amount (Δn) input from the card (# 2822-3),
The lens is stopped (# 2822-4), and waits until the mirror up is completed (# 2822-5). Mirror up is completed (I
P ₂₀ = to return to the "L").

Next, returning to FIG. 30 (a), the shutter speed is controlled (# 2825), [lens drive REL II control] during release is performed (# 2830), and the process returns. This is shown in FIG. 30 (c) and explained. First, it is determined whether or not the card function is ON (# 2830-0), and if it is OFF, the process returns. If it is ON, it is determined whether there is a signal of the snap drive bit (# 2830-1), and if there is, it is driven by the opposite amount (-Δn) (# 2830-2) to stop the lens. (# 2822-
4) Return. When there is no signal of the above bit, it is determined whether or not a defocusing card is inserted (# 2830-5). If it is not a defocusing card, return. If the card is a defocusing card, the count pulse number (CNT) at the current position of the driven lens
Is set to CT "(# 2830-6), and the difference ([Delta] n) from the lens position (CT ') before driving is calculated (# 2830-7), and the process proceeds to step (# 2830-2). And returns.

The routine of the Tv control in the step (# 2825) of FIG. 30 (a) is described with reference to FIG. 30 (d). First, the microcomputer (μC) changes Tv to the exposure time (T) (# 283).
5), the timer for measuring the exposure time is reset and started (# (2836), and the running of one act (not shown) is started (#
2837). Then, it is determined whether or not the card function is ON (# 283
8) If it is OFF, the flow moves to the flow (# 2846) to wait for the exposure time (T) to elapse. On the other hand, if it is ON, it is determined whether or not it is a defocusing card (# 2839). If the card is a defocusing card, the current pulse position of the lens
Stored as CT '(# 2840), exposure time (T) is T / 4
(# 2841), and when it becomes T / 4, the drive direction is detected from the information (ΔLp) input from the card to the far side or the near side (# 2842), and the direction is set accordingly. Drive the lens at the highest speed (# 2845). At this time, the counter for monitoring the lens extension position is still operating. At this time, or when the card is not a defocusing card, the exposure time (T) is set (# 2846).
When it reaches T, the second act (not shown) starts running (# 2847),
Wait for the time when the running is completed (# 2848), stop the motor for driving the lens (# 2849), and return.

FIGS. 31 (a) and (b) show the steps (# 5
9 shows a flowchart of control for winding one frame of the film shown in FIG. To explain this, in FIG. 31 (a), the microcomputer (μC) outputs a motor hoisting signal to the motor control circuit (MD) and reset-starts the timer (T ₃ ) (# 2850, # 2855). This timer is used to detect that the film has been wound up to the last frame and that the film has been pulled. The microcomputer (μC) determines in step (# 2860) whether or not the switch (S _WD ) indicating that one frame has been wound has been turned on. If not, the microcomputer determines whether or not 2 seconds have elapsed in this state. (# 2865), if 2 seconds have passed,
The motor is controlled to stop (# 2870). If the film is jammed, the film is controlled to be jammed (# 2875). Next, a cancel signal for canceling the bracketing or the auto shift which is continuous shooting is issued by one. (# 2876), data communication I is performed (# 2877), and the routine returns. FIG. 31 (b) shows the subroutine of the squeezing operation. The signal for reversing the motor is output (# 293).
0), and wait for the film detection switch (S _FLM ) to be turned off (# 2935). When the switch is turned off, perform motor stop control (# 2955) to wind the film into the patrone room. And return.

Returning to FIG. 31 (a), in step (# 2860),
When the one-frame winding completion switch ( _SWD ON) is turned on, the motor is controlled to stop in step (# 2880), and then in step (# 2890), the counter number (N ₁ ) is incremented by 1 and the process proceeds to step (# 2900). In step (# 2900), the number of films (N ₁ ) is written into the E ² PROM.

Next, when the back cover closing detection switch (S _RC ) or the rewind switch (S _RW ) is operated, a pulse signal is input to the terminal (INT ₂ ), and the microcomputer (μC) is shown in FIG. Execute the [INT ₂ ] interrupt. In the flow of FIG.
The microcomputer (μC) first prohibits interruption to this flow (# 3000), and then detects in step (# 3005) whether or not the rewind switch (S _RW ) is ON. If it is ON, the [rewind] routine shown in FIG. 31 (b) is executed to perform the rewind operation, the interrupt is permitted, and the routine returns (# 3010). Rewind switch (S _RW ) is ON
If not, it is determined that the back cover closing switch (S _RD ) has been turned on, and further, as a return to the bracket function or the automatic shift function, the cancel signal (data is used for communication I) is set to 0 (# 3012). Proceed to # 3015) to determine whether a film exists. If there is no film, and therefore the film detection switch (S _FLM ) is OFF,
Proceed to step (# 3100) without performing initial load. In contrast, if a film is present (ie, S _FLM
Is ON), the terminal (CSDX) is set to “H” level, serial communication is performed with the film sensitivity reading circuit (DX), and the film sensitivity data (Sv) and the number of film shots (N)
Is input, and when communication is completed, the terminal (CSDX) is set to the "L" level (# 3020 to # 3030). Then, the number (N ₁₎ is set to -2 (# 3035), followed by terminals (CSDISP) to "H" level, performs display control circuit and a serial communication (# 3045),
A signal indicating the initial load (DP _9H b ₃ = 1) and data on the number of films are output, so that data other than the data indicating the number of films (N ₁ ) is not displayed. When the serial communication is completed, the terminal (CSDISP) is set to “L” level (# 3050). For the numerical value of the number of films (N ₁ ), the display is made using two 7 segments. Next, the microcomputer (μC) outputs a signal indicating winding of the motor to the winding control circuit (# 3055), waits for one frame to be wound (# 3060), and turns on the one-frame winding switch (S _WD ).
One is added to the number of films (N ₁ ), and it is determined whether or not the number has become 1, and if not, the process returns to step (# 3040). If it is 1, the process proceeds to step (# 3075) to stop the motor, and proceeds to step (# 3095). Then, in step (# 3095), the number of films (N ₁ )
And the film sensitivity are written to the predetermined address of the E ² PROM,
After writing is completed, all interrupts are enabled (# 3100) and the routine returns.

Here, in this embodiment, it is added that the setting and resetting of the flag and the bits 1 and 0 are the same.

In the above, the microcomputer (μ
Various flowcharts have been described mainly with respect to the operation C). Next, control operations of the IC card mounted on the camula will be described with reference to flowcharts. The description will be given for each type of card. An IC card (CD) incorporates a microcomputer (μC) with a built-in E ² PROM.

(1) Bracket card When the bracket card is mounted on the camera, the bracket card executes the reset routine shown in FIG.
M) are all reset (B-5), the information in the E ² PROM, the number of sheets (N) and the shift amount (ΔEv) are transferred to the RAM, and sleep is performed (B-10).

Next, when a signal changing from "L" to "H" is sent from the camera to the terminal (CSCD) of the bracket card, the bracket card executes the interrupt shown in FIG. Here, the bracket card performs serial communication once to input data indicating the type of communication in synchronization with the clock sent from the camera (B-15).

From the data from this communication, the type is determined (B-
20) In the case of communication (I), the card is set to the data input side (B-25), and serial communication is performed to receive data (see Table 6) from the camera. Based on this data, a data setting and exposure calculation subroutine is executed (B-35, B
-37), then determines whether the release switch (S ₂₎ is ON (B-38), prohibits the AF when being ON (= 1) as (B-39), sleeps .

Before explaining the above subroutine, what kind of data is output from the card in response to the communication is
This will be described using a bracket card table.

In communication (II): ・ FL forced OFF (= 1) CS II-1-b ₂・ Can the card perform display forced? CS II-1-b ₄・ Card function ON / OFF CS II-1-b ₅・No communication (V) (= 0) CS II-2-b ₂ • Release prohibited CS II-2-b ₃ • Forced continuous shooting (= 1) CS II-2-b ₄ • AF prohibited CS II-2-b ₇ · _{ΔAv, ΔTv} data (= 1) CS II-3 -b 0 · T V · A V / display data (= 0) CS II-3 -b 3 · communication (IV) Yes (= 1) CS II- 3-b ₄ · No communication (III) (= 0) CS II-3-b ₅ · Communication type CS II-3-b ₆ · Photometry loop repetition All except for the signal of CS II-3-b ₇ "0" From the table, the * mark sets “1” or “0” according to the time, and when “1”, the control is ON, and when “0”, the control is OFF. "0" and "1" are determined for fixed items. In communication (II),
Other than that, there is no direct address type communication data (two times) in communication (IV), its address (CS II-7, 8), and communication in group communication (III). Therefore, CS II-9- ( b ₁ , b
₂ ) = 0,0, Communication (IV) is display only, so CS II−10−b ₁ =
1, otherwise set to “0”.

Where there is nothing written, any data may be included.

In communication (IV), it is data of ΔAv · ΔTv, which are stored in RAM.

In communication (VI), a sleep enable / disable signal is sent.

The data setting subroutine will be described with reference to FIG. 35 (a). In step (B-146 to B-149), the display control data is set to "0", release inhibition is inhibited (= 0), and AF inhibition is inhibited (= 0), prohibition of prohibition of photometry loop repetition (= 0)
Initially set to

Next, in step (B-150), it is determined whether the cancel signal is 1 or not, and if "1", the release is prohibited (B-15).
2), is not "1", N _1, it is determined whether or not N-1 (B-151) , the case of N-1, and a release prohibition (B-152) as a set number ends, otherwise Does nothing and proceeds to step (B-160).

In step (B-160), it is determined whether or not the DISREQ (request for displaying the card name) signal obtained in the communication (I) is "1". If the signal is "1", the display control data is changed to "1". "1", the card display function ON / OFF is set to ON (1), and the data for group designation is set to (0) (B-170, B-195). Next, in step (B-200), it is determined whether or not the flag (SIF) is set. If the flag (SIF) is not set, the flow is passed for the first time, and the flag (SIF) is set.
-205), reset and start the timer (B-21)
0) Proceed to step (B-215). When the flag (SIF) is set, the process proceeds to step (B-215).
In step (B-215), it is determined whether the timer has elapsed for 10 seconds. If 10 seconds have not elapsed, the photometry loop repetition signal is set to "1" (B-220), and a card display name and data for performing only card display are set (B-220).
-222) Return. This display is shown in FIG. On the other hand, when 10 seconds have elapsed, the flag (SIF) is reset (B-226), and the display control data is set to "0" (B-227).
To return.

When DISREQ = 0 in step (B-160), IP ₅ =
It is determined whether or not it is "L" ( _SEM , S _FUN , S _CD , S _CDS , S ₁ is ON) (B-162). When "L", the card name is displayed. The display flag (display F) shown is reset (B-163), and if it is not "L", the process goes to step (B-165) without doing anything to reset the flag (SIF). Thereafter, the flow advances to step (B-260) in FIG. 35 (b) to determine whether or not the self signal obtained in communication (II) is "1".

If the value is "1", the process returns to prohibit the control by the operation of the switch of the camera (related to the card). When the self signal is not "1", it is determined whether or not the card setting switch (S _CDS ) is turned on (D-26).
Five). When the signal is ON (signal = 1), it is determined in step (B-270) whether or not the flag (S _CDS IF) indicating that the signal has passed is set. Proceed to step (B-276), and if not set, set (B-275) and proceed to step (B-276). In this step (B-276), it is determined whether or not the setting is being performed.
Proceeding to 405), display control in the setting mode is performed.

If the setting is being performed (SETF = 1), the operation has been performed to exit the set, and the display returns without performing the display control.

If the switch (S _CDS ) is OFF in step (B-265), the _flow advances to step (B-280) to determine whether or not the flag (S _CDS IF) is set. Proceed to (B-310). If it is set, it is reset (B-285), and it is determined in step (B-290) whether or not a flag (SETF) indicating that data is being set is set. reset (B-295), E ² and the PROM write signal (sent to the camera) to 1, it sets the direct addressing, DerutaAv, so as to output the .DELTA.TV (B-30
0), and proceed to step (B-310). As a result, the setting is exited, and the data is written into the E ² PROM in the IC card. If the setting flag (SETF) is not set,
This is set (B-305) to enter the data setting mode, and the flow advances to step (B-310). Step (B-310)
So if being set (SETF = 1), is determined by the data of the card switch (S _CD) of communicating whether it is ON (II) (B-315 ), if it is ON (S _CD = 1)
It is determined whether or not a flag (S _CD IF) indicating that the vehicle has passed here is set (B-320). If it is set, the process proceeds to step (B-345). If not, set it in step (B-325) (S _CD
IF = 1), change mode to 1 in the next step (B-330)
Advance one to two and proceed to step (B-345).

Here, the change mode 1 is the setting of the shift amount 2 is the setting of the number of shots. If the card switch (S _CD ) is not turned on in step (B-315) (S _CD = 0), it is determined in step (B-335) whether the flag (S _CD IF) is set. If it is not set, it is determined that nothing has been operated, and the process proceeds to step (B-345). If it is set, the switch (S _CD ) is changed from ON to OFF.
After resetting this flag in step (B-340), the flow advances to step (B-345). In step (B-345), it is determined whether or not the up switch (Sup) is ON, and if it is ON (Sup = 1), it is determined whether the mode is 1 (B-350), 1 → 2 when mode is 1
The process proceeds to 3 and cyclically proceeds to return to 1 after 3 (B-355).

 Here, in mode 1, 1 is 0.3Ev, 2 is 0.5Ev, and 3 is the exposure shift amount of 1.0Ev.

Even when the mode is 2, it progresses from 1 to 2 to 3, and after 3 it is 1
(B-365).

 Here, 1 is 3 sheets, 2 is 5 sheets, 3 is 7 sheets of film.

When the change in each mode is completed, step (B-40)
Proceed to 5). When the up switch (Sup) is off, it is determined whether the down switch (Sdn) is on or not (B
If it is not ON, the process proceeds to step (B-405). When the switch is turned on, the switch (Sup) is the same as the switch (Sup) except that the direction of change is the same, so that the description is omitted.

When the processing of (Sup) and (Sdn) is completed, step (B)
−405), display control = 1, release prohibition = 1, AF
Prohibition = 1, group designation = 0, photometry loop repetition = 1, set display data during data setting, and return. The display during this setting will be described later. This allows the camera to control display with the card, prohibit release, prohibit AF,
The function to continue the display regardless of the power holding timer of the camera is executed.

In the above step (B-310), setting is not in progress (SETF =
0), the step (B-43) in FIG.
Proceeds to 0), and determines whether the card switch (S _CD) is turned ON, when the card switch (S _CD) is OFF, reset the flag _{(S CD F) (B-} 460), a display It is determined whether or not the flag (display F) is set (B-46).
2) If not set, return. If the display flag is set, the flow advances to step (B-170) to control the display of the card name. Card switch (S
_{When CD} ) is ON, a flag (S
_CD F) is set or not (B-435),
If it is set, it is determined that the switch is being operated, and the process proceeds to step (B-462). If it is not set, set it (B-440), determine whether the card function is currently ON (B-445), and if it is ON, turn it OFF (communication II data). (B-450),
The flag display (display F) is reset (B-451) and the routine returns.

If it is OFF, set it to ON (communication II data) (B-45
5) The display flag is set (B-456), and the flow advances to step (B-170) to control the display of the card name.

Returning to FIG. 34, if it is not communication (I), it is determined whether or not it is communication (II) (B-40). If it is communication (II), the card is output to output the set data to the camera. Side (B-45), perform serial communication 10 times (B-50)
Go to sleep.

If it is not communication (II), it is determined whether it is communication (IV) or not (B-55). If it is communication (IV), the card is set to the output side (B-60), and it is determined whether or not a group is designated. Judgment is made in (B-65), display data is output when a group is designated (B-70), an address is set, serial communication is performed 9 times (B-75), and step (B-75) is performed.
Go to 90). When the group is not designated (direct address designation), the address of the change data of ΔTv, ΔAv is designated (B-80), serial communication is performed twice (B-85), and the process proceeds to step (B-90). In step (B-90), E ² PR
It is determined whether or not the OM write signal is set. When the OM write signal is set, the mode (I) No. mode (II)
A write control signal is output to write the No. 1 byte data at a predetermined address of the E ² PROM (B-95). E ²
Write to PROM. This is performed in hardware and the microcomputer (μ
C) only needs to send the control signal. Then, the writing end signal (this signal is automatically set by the hardware configuration when the writing is completed) is reset (B-100), and the apparatus goes to sleep. Sleeps immediately when there is no write signal. If it is not communication (IV) in step (B-55), it is determined that communication is (VI). First, it is determined by the above-mentioned end signal whether writing is completed, and if it is completed, a sleep enable signal is set ( B-110), if not completed, a sleep disable signal is set (B-115), and the process proceeds to step (B-120), and serial communication is performed as a data output side according to a clock from the camera (B-110). B-125) Sleep.

FIG. 37 shows the details of the exposure calculation subroutine in the above flow. In FIG. 37, if the card function is OFF, the process returns without doing anything. However, if the card function is ON, steps (B-505) to (B-5) are performed.
In 20), determine the mode of the shift amount and the shift amount (ΔEv)
And the steps (B-525) to (B-54)
In step 0), the mode of the number of shots is determined and the number of shots is set. After these determinations and setting are completed, initial settings are made in steps (B-545), (B-555), and (B-560), and the first of the number is set to an appropriate exposure. And
When the release switch (S ₂ ) is turned on, 1 is added to the counter N ₁ indicating the number of sheets, a determination of N ₁ is made, and steps (B-570), (B-575),. B-595)
Change the exposure in the following order. That is, for example, step (B-
When 1 numerical determination of N ₁ at 565) (i.e., when the second sheet of bracket shooting) shift amount of exposure is Delta] Ev, N ₁ =
When 2 (3rd sheet) -ΔEv, N ₁ = 3 (4th sheet)
-2ΔEv the case 2DerutaEv, when N ₁ = 4 (5 th), N ₁
When = 5 (sixth sheet), 3ΔEv, and when N ₁ = 6 (seventh sheet), −3ΔEv, so that shifting to the under side and shifting to the over side are performed alternately for each sheet. The shift amount is divergently increased. Of course,
In steps (B-525) to (B-540), the number of shots is N
= 3, the process ends at step (B-575), and when N = 5 is set, step (B-585).
And when N = 7 is set, step (B-
595).

After the exposure amount of each of the steps (B-570) to (B-595) is shifted, the step (B-600) is performed.
In step P, the exposure mode is determined. In P mode, 1 / 2ΔEv is corrected for each of the aperture shutter speeds. In A and S modes, the calculated shutter speed and aperture value are corrected. When ON, set the aperture to OF
In the case of F, assuming that the shutter speed is to be changed, ΔTv and / or ΔAv corresponding to each mode are set so as to be corrected by ΔEv, and the process returns.

The display during data setting in the case of a bracket card is shown in FIG.

FIG. 7A shows a normal display. When the card setting key is turned on in this state, the display changes as shown in FIG. 7B, and the previously set exposure amount (ΔEv) and the number of films (N) are set. Is displayed, and when the card setting key is turned off, only the portion indicating the exposure amount blinks as shown in (c).
Here, each time the up key (up switch) is turned on, (c) → (d) → (e) → (c) →..., And each time the down key (down switch) is turned on, (c) → (e) ) →
(D) → (c) →...

For example, when the card key is turned on in the state of (d), the number of films flashes (g), and when the up key is turned on from the state of (g), (g) → (h) →
(F) → (g) →… and turn on when the down key is turned on
Every time, (g) → (f) → (h) → (g) →.

Then, for example, in the state of (f) above, the card setting key is
When it is turned on, the normal display is made as shown in FIG.

 Next, the operation of the auto shift card will be described.

The auto-shift, as a certain amount of exposure is to vary the combination of A _v, T _v.

(2) Auto-shift card The auto-shift card executes the reset routine shown in FIG.
M) Reset all the information mode information in E ² PROM to R
Move to AM and sleep (T-5, T-10).

Next, when a signal changing from "L" to "H" is sent from the camera to the terminal (CSCD) of the card, the card executes an interrupt shown in FIG. Here, the card performs serial communication once to input data indicating the type of communication in synchronization with a clock sent from the camera (T-1).
Five).

From the data from this communication, the type is determined (T-
20) In the case of communication (I), the card is set to the data input side (T-25), serial communication is performed (T-30), and data (see CACD table) is received from the camera. Based on this data, a data setting subroutine is executed. Next, it is determined whether or not the release switch (S ₂ ) is ON (T-38). If the release switch (S ₂ ) is ON, AF is prohibited (T-38). −3
9), sleep.

Before describing the above subroutine, what data is output from the card in response to communication will be described using an auto shift card table.

In communication (II): ・ FL forced OFF (= 1) CS II-1-b ₂・ Does the card force display? CS II-1-b ₄・ Card function ON / OFF CS II-1-b ₅・Shake buzzer ON / OFF CS II-1-b ₇ • P shift prohibited (= 1) CS II-2-b ₀ • Forced P mode (= 1) CS II-2-b ₁ • No Vth communication (= 0) ) CS II-2-b ₃ · Release prohibited CS II-2-b ₄ · Forced continuous shooting (= 1) CS II-2-b ₄ · AF prohibited CS II-2-b ₇ · T _v , A _v / Display data CS II-3-b ₃・ IV communication (= 1) CS II-3-b ₄・ III communication (= 1) CS II-3-b ₅・ Communication type (= 0) CS II -3-b ₆ · Photometry loop repetition CS II-3-b ₇ · Camera shake buzzer control (= 1) All signals except CS II-4-b ₀ signal are set to “0”. To set "1" or "0". When "1", the control is ON, and when "0", the control is OFF. "0" and "1" are determined for fixed items. In communication (II),
Since only that communicate in a group communication in addition (III) is _{G 1, CS II-9- (} b 1, b 2, b 3) = 1,0,0, communication (IV) is a display and control data 2 CS II−b ₁ , b ₂ = 1, 1, otherwise “0”.

It should be noted that, in the above-mentioned table, any data may be entered where nothing is written.

In communication (VI), a sleep enable / disable signal is sent. The data setting subroutine is described with reference to FIG. 41 (a). First, the display control data is set to "0", release inhibition is inhibited (= 0), and AF inhibition is inhibited (= 0) in step (T-146). To (T-148), and then to step (T-148).
In 149), the measurement loop iteration is set to “0”.

Next, it is determined whether the cancel signal is "1" (T-
150), if “1”, release is prohibited (T-152)
"1" if not determines whether N ₁ is "2" (T-15
1) In the case of "2", it is determined that three sheets have been taken and release is prohibited (T-152). Otherwise, the process proceeds to (T-160) without doing anything. DISREQ obtained by communication (I)
It is determined in step (T-160) whether the signal of (request for displaying the card name) is “1”, and if it is “1”,
Set the display control data to “1” and turn the card display function ON / OFF.
Turn ON (1) (T-170, T-175). And the flag (SI
It is determined whether or not F) is set (T-200). If it is not set, the flag (SIF) is set (T-205) for the first time that the flow passes, and the timer is reset and started. (T-210), step (T
Go to -215). Even when the flag (SIF) is set, the process proceeds to step (T-215). Step (T-21)
In 5), it is determined whether or not 10 seconds have elapsed in the timer. If 10 seconds have not elapsed, the photometry loop repetition signal is set to "1" (T-220), a card display name and data for performing only card display are set (T-222), and the process returns. This display is shown in FIG. On the other hand, if 10 seconds have elapsed, the flag (SIF) is reset (T-226), the display control data is set to "0" (T-227), and the process returns.

When DISREQ = 0 at the step _{(T-160), IP 5} =
It is determined whether or not "L" (one of _SEM , S _FUN , S _CD , S _CDS and S ₁ is ON) (T-162). When "L", the card name is displayed. The display flag (display F) shown is reset (T-163). If the flag is not "L", the process goes to step (T-165) without doing anything, and the flag (SIF) is reset. Then, step (T-260) in FIG. 41 (b)
To determine whether or not the self signal obtained in communication (II) is "1".

If the value is "1", the process returns to prohibit the control by the operation of the switch of the camera (related to the card). When the self signal is not "1", it is determined whether or not the card setting switch (S _CDS ) is turned on. When the signal is ON (signal = 1), it is determined whether or not a flag (S _CDS IF) indicating that the signal has passed is set (step (T)).
If it is set, the process proceeds directly to step (T-270). If it is not set, it is set (T-275). Go to −276). In this step (T-276), it is determined whether or not the setting is being performed. If the setting is not being performed, the process proceeds to step (T-405) to display that the setting mode has been entered. If set (SETF =
1) Since the operation was performed to exit the set, the process returns without performing the display control. If the switch (S _CDS ) is OFF (0) in step (T-265), step (T-280)
To determine whether or not the flag (S _CDS IF) is set. If not, step (T-310)
Proceed to. If it is set, it is reset (T-285), and it is determined in step (T-290) whether or not a flag (SETF) indicating that data is being set is set. Reset (T
-295), the E ² PROM write signal is set to 1, the direct address designation is set to 1 (T-300), and the process proceeds to step (T-310). This exits the setting process. If the flag (SETF) indicating that the setting is in progress is not set, it is set (T-305), and the data setting mode is entered.
-310).

In step (T-310), the flag (SETF) is set to "1".
It is determined whether or not it is “1”, and the step (T-345)
Proceed to. In step (T-345), the up switch (S
_UP ) is turned on or not, and if it is turned on (S _UP = 1), proceed from 1 → 2 → 3 and proceed cyclically to return to 1 after 3 (T-355). .

 Here, 1 is a shift amount of 0.1 Ev, 2 is 2 Ev, and 3 is a shift amount of 3 Ev.

When the change in this mode is completed, step (T-405)
Proceed to. When the up switch (S _UP ) is OFF, it is determined whether the down switch (S _dn ) is ON or not (T-37).
5) If not ON, go to step (T-405). When the switch is turned on, the switch _P ) is the same as the switch _P ) _except that the change direction is reversed, and the description is omitted.

When the processing of (S _UP ) and (S _dn ) is completed, step (T−
405) The display control = 1, release prohibition = 1, AF prohibition = 1, group designation (= 0), measurement loop repeat = 1
Then, the display data being set is set, and the process returns. The display during this setting will be described later. This allows the camera to control display by card, prohibit release,
Executes the function to continue the display regardless of the AF prohibition and the camera power holding timer.

In the above step (T-310), the setting is not in progress (SETF =
0), the step (T-43) in FIG.
Proceed to 0) and determine whether the card switch (S _CD ) is ON or not. If the card switch (S _CD ) is OFF, reset this flag (S _CD F) (T-460) and display It is determined whether or not the flag (display F) is set (T-46).
5) If not set, return. If it is set, the flow advances to step (T-170) to control display of the card name. When the card switch (S _CD ) is ON, it is determined whether or not the flag (S _CD F) indicating that the card has passed here is set. (T-46
Proceed to 2). If it is not set, it is set (T-440), and it is determined in the next step (T-445) whether the card function is currently ON, and if it is ON, it is OFF (communication) (T-450), reset the display flag (display F) (T-451), and return. If it is OFF, it is turned ON (communication (II) data) (T-455), the display flag (display F) is set, and the process proceeds to (T-456) and (T-170). Performs name display control.

Returning to FIG. 40, when it is not communication (I), it is determined whether or not it is communication (II) (T-40). When it is communication (II), the card output side to output the above set data to the camera (T-45), perform serial communication 10 times (T-50), and sleep.

If it is not communication (II), it is determined whether it is communication (III) or not (T-55). If it is communication (III), data is set to the input side (T-52) and data communication is performed 15 times. (T-53), and further calculate ΔT _V and ΔA _V in step (T-5)
Go to step 4) and return. FIG. 43 (a)
(B).

Next, when the communication is not the communication (III), it is determined whether or not the communication is the communication (IV) (T-55). When the communication is the communication (IV), the data is set to the output side (T-60). Is determined (T-65), and if display control is performed, display data is output (T-70), an address is set, serial communication is performed 9 times (T-75), and step (T-75) is performed. Proceed to). If the display control is not performed, the address of the control data is designated, serial communication is performed four times (T-85), and the process proceeds to step (T-90). Step (T-90) in, to determine whether E ² PROM write signal is set, when set, the mode a predetermined address of the E ² PROM 1-byte data of No. of (I) , A write control signal is output (T-95). Writing to the E ² PROM is performed by hardware, and the microcomputer (μC) only needs to send a control signal. Then, in step (T-100), the write end signal is reset (this signal is automatically set by the hardware configuration when the writing is completed), and sleeps. If there is no write signal, sleep immediately. If it is not a communication (IV), it is a communication (VI)
First, it is determined whether or not the writing is completed by the end signal (T-105). If the writing is completed, the sleep enable signal is set (T-110).
Set the sleep disable signal respectively (T-115),
Step (T-120) Serial communication is performed on the data output side according to the clock from the camera (T-125), and sleep is performed.

The arithmetic control in step (T-54) in FIG. 40 is shown in FIGS. 43 (a) and (b). Here, BV _A background brightness, BV _S is the main object luminance, BV _AVE represents an average luminance. If the card function is OFF, return. When the card function is ON, it is determined whether or not BVA-BVS ≧ 1 and the BV
BVC = BDS when A−BVS ≧ 1, BVC = BV when BVA−BVS <1
A-VE. This is to give priority to the main subject so that the whole is also properly exposed. Exposure value is calculated by BVc + SV, which indicates that this value exceeds the control limit value. If the answer is YES in steps (T-525) and (T-530), the shift function cannot be performed, and the routine returns with the card function turned off. The calculation of the control exposure value in the step (T-540) is considered so as not to meet both the limit values of the aperture value and the shutter speed as much as possible.

The control shutter speed (TVc) is determined from the determined AVc and EVc, and the mode is determined. When I, ΔEV = 1,
In the case of II, ΔEV = 2, and in the case of III, ΔEV = 3. ΔEV = 3
After that, it is determined whether or not the open F-number exceeds 4, and if it exceeds 4, since the number of aperture stages of the lens is often only 6 steps,
Proceed to (T-590) with ΔEV = 2.

In (T-580), it is determined whether or not the release switch (S ₂ ) is turned on. If not, N ₁ = 0, Δ
By setting AV = 0 and ΔTV = 0, the first sheet is set as shown in the program diagram. However, since the program shift is enabled, ΔAV
_1, or added 0.5EV a .DELTA.TV _1, and or subtraction (T-66
Go to 0).

When the release switch (S ₂ ) is ON, add 1 to N ₁
Performing determination of N _1, 1 when ΔTV = ΔEV, ΔAV = -ΔE
In the case of V, 2, ΔTV = −ΔEV, ΔAV = −ΔAV, in the case of 3, no setting is made and the process proceeds to (T-660). In (T-660), TV = TV
c + ΔTV ₁ + ΔTV, AV = AVc + ΔAV ₁ + ΔAV, TV and AV are obtained,
When the TV and AV exceed any of the control limits TVmax, AVmin, AVmax and AVmin, the control limit value is set to TV or AV, and the control limit value is fed back to the control limit value (AVc). , Control shutter speed (TGc). Then, the camera shake shutter speed (TV _H ) is obtained by TV _H = 1.125 × log2f / 50 + 5.875 (f: focal length). When the release switch (S ₂ ) is ON, the camera shake buzzer is turned OFF and the routine returns. When the release switch (S ₂ ) is not turned on, the TV is shifted by subtracting −ΔEV. It is determined whether or not the TV value is equal to or less than the camera shake shutter speed ( _TVH ) -2 EV. If the TV value is less than or equal to, the camera shake buzzer is turned on, and if TV> _TVH- 1, the camera shake buzzer is turned off. To return.

Here, the reason why the camera shake limit is set to TV _H -1 is that the probability of camera shake is small for the second and subsequent sheets, that is, there is no depression of the relays button. In addition, I want to take the second card without any worries, so I minimize the sounding of the camera shake buzzer.

FIG. 44 shows a basic program chart determination of the T _V, A _V.

FIG. 45 shows a display during data setting. When the card setting key is operated from the state of the normal photographing mode (a), the setting mode becomes, for example, as shown in (b).
Here, the upper 1 and the lower CARD blink. 1 in the upper row indicates the shift amount, and 3 in the middle row indicates the number of shots.
When the up / down key is operated in the state of (b), (b) → (c) → (d) → (b)... Or (b) → (d) → (c) → (b) ... and change. And in any case, when you press the card setting key,
It returns to the original normal shooting mode (a). In FIG. 45, only the blocks are shown in the normal shooting mode (a), and specific displays are omitted.

Table 7 shows an example of a map of the RAM in the camera. If it is such a RAM (E ² PROM free) map, when group MP _1, MP _3, MP ₁₀ is required for data communication _{II (G 0, G 1,} G 2), there the complete group For example, MP ₁ , MP ₃ ,
The start address and the number of the MPs ₁₀ may be stored, and these may be read out according to the signal. These are compatible with existing card systems because they only read out fixed data. However, newly with other function cards are made, for example, if it is necessary to the other data MP ₂ and MP _3, it can not be read out other data. In order to make this possible, it is necessary to directly specify the head address of data and the number thereof (direct addressing type). However, at that time, it is impossible to specify the data (e.g., data of MP ₂ of the data and MP ₇ only) of discrete, will be all the data up to MP ₂ to MP ₇ is specified, the data Transfers are wasted (memory and time). In the present embodiment, data transfer is performed efficiently by properly using these.

In this embodiment, the direct addressing is also performed after the relationship between the group-designated card and the camera has been established, and it is not possible to newly increase the group designation. Therefore, if the card and the camera are being designed at the same time, the direct address type card can also be designated as a group.

In the above-mentioned embodiment, particularly, the portions related to the gist of the present invention will be described again. First, both the bracket card and the auto shift card are mounted on the camera body and communicate data with the camera body (II) from the card side. Various data are given to the side, including CS II-2-b ₄ = 1 as also shown in Tables 12 and 13. This data is a signal indicating forced continuous shooting as can be seen from Table 6. Accordingly, in the photographing control using the bracket card or the auto-shift card, as can be seen from the flowchart of FIG. 6, after taking one image, it is determined in step (# 507) that forced continuous shooting is performed. Execute the SO routine via). That is, the flow returns to step (# 400), and the next second image is captured. The shooting is sequentially performed until the set number is reached, but if the release switch (S ₂ ) is turned off halfway, step (# 47)
3) Or return from step (# 505) through step (# 520), and the shooting ends.

Effect of the Invention According to the present invention, when it is desired to stop the bracket shooting halfway or to stop the auto shift shooting halfway, it is only necessary to turn off the release switch, so that the film is not wasted. .

Further, since the exposure condition and the count amount of the counting means are reset to a value corresponding to the first frame, not only the photographing is simply stopped, the original photographing is continued when photographing is started again. Such a situation does not occur, and the shooting is restarted from the initial state. This is because shooting in a mode such as bracket shooting or auto shift shooting is equivalent to a single shot when a series of shootings is normal, but interrupting that shooting depends on the state of the subject etc. This is because it is determined that an unfavorable state has occurred. In such a case, it is determined that it is more appropriate to restart the shooting from the beginning rather than restarting the subsequent shooting.

[Brief description of the drawings]

FIGS. 1A and 1B relate to an embodiment of the present invention. FIG. 1 is a circuit block diagram of the entire camera, FIG. 2 is a diagram showing a display form on a display unit thereof, and FIG. It is a flowchart shown. FIG. 4A is a circuit diagram of a lens circuit, and FIG. 4B is a side view of the lens. FIG. 5 is a flowchart for data communication between a camera and a card or the like. FIG. 6 is a flowchart showing a routine for performing photometry, AF, display, exposure control, and the like, and FIG. 7 is a flowchart showing a routine for determining an AF mode and a focus lock therein. 8 (a) is a circuit diagram of the electronic flash device, FIG. 8 (b) is an explanatory diagram relating to the display, and FIGS. 8 (c) and 8 (d) are interrupt routines for the electronic flash device. FIG. 9 is a diagram showing an interface circuit of the electronic flash device. FIG. 10 is a flowchart of lens data input. FIG. 11A is a flowchart of flash data input, and FIG. 11B is a flowchart of flash data output. FIG. 12 (a) is a flowchart of AF, FIG. 12 (b), FIG.
FIG. 12 (c), FIG. 12 (d), FIG. 12 (e), FIG. 12 (f), FIG. 12 (g) and FIG. It is a figure showing the example of a display in a finder about it. FIG. 14 is a diagram showing a distance measurement range and a photometry range in a shooting screen. FIG. 15 is a flowchart of data setting, FIG. 16 is a flowchart of exposure mode change, FIG. 17 is a flowchart of function mode selection, FIG. 18 is a flowchart of exposure correction,
FIG. 19 is a flowchart of self-service, FIG. 20 is a flowchart of photometric data creation, and FIG. 21 is a flowchart of AE lock. FIGS. 22 (a) and 22 (b) are flowcharts for setting the aperture and shutter speed. FIG. 23 is a flowchart of the exposure calculation, and FIGS. 24 (a), 24 (b), 24 (c), 25, 26 and 27 show the modes of each mode. It is a flowchart. FIG. 28 is a flowchart of control by an IC card. FIG. 29 (a) is a flow chart showing a display routine, FIG. 29 (b) is a flow chart showing the interruption routine, and FIGS. 29 (c), 29 (d) and 29 (e). ) Is a diagram showing a display example, and FIG. 29 (f) is a flowchart showing a mode setting routine. FIG. 30 is a flowchart of exposure control, FIGS. 30 (b) and 30 (c) are flowcharts of lens driving, and FIG. 30 (d) is a flowchart of shutter speed control.
FIGS. 31 (a) and 31 (b) are flow charts for winding one frame of film, and FIG. 32 is a flow chart showing an interruption routine for closing the back cover. 33, 34, and 35 are diagrams showing the operation flow of the bracket card, FIG. 36 is a diagram showing a display example thereof, and FIG.
The figure shows the same operation flow, and FIG. 38 shows the display accompanying the setting. 39, 40, and 41 are diagrams showing the operation flow of the auto shift card, FIG. 42 is a diagram showing a display example thereof, FIG. 43 is a diagram showing the same operation flow, FIGS. 44 and 45 The figure is an illustration.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naohiro Kageyama 2-3-13 Azuchicho, Chuo-ku, Osaka-shi, Osaka "Change of administrative division on February 13, 1989" Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Takehiro Kato 2-3-13 Azuchicho, Chuo-ku, Osaka-shi, Osaka "Change of administrative division on February 13, 1989" Osaka International Building Minolta Camera Co., Ltd. In-house (72) Inventor Yoshihiko Higashi 2-3-3 Azuchicho, Chuo-ku, Osaka-shi, Osaka “Change of administrative division on February 13, 1989” Osaka International Building Minolta Camera Co., Ltd. In-house (72) Inventor Kenji Tsuji Azuchi, Chuo-ku, Osaka-shi, Osaka Osaka International Building Minolta Camera Co., Ltd. 2-31-2, Osaka (72) Inventor Hiroshi Otsuka 2-3-1-13 Azuchicho, Chuo-ku, Osaka-shi, Osaka Kokusai Building Minolta Camera Co., Ltd.

Claims (3)

(57) [Claims] 1. A camera having a photographing mode for continuously photographing a plurality of images while changing exposure conditions to a film, wherein: a mode setting means for setting the photographing mode to the above mode; Continuous shooting number setting means for setting the number of shots to a predetermined number in accordance with the mode being set; shooting means for continuing shooting in the mode while the release switch is being operated; Counting means for counting to determine whether or not the predetermined number has been reached, wherein the photographing means terminates photographing when the counting means determines that the predetermined number has been reached, When the operation of the release switch is interrupted during shooting by the camera, the shooting is stopped. Camera, characterized in that the photographing mode is reset means for resetting the value corresponding count amount to the first frame, respectively by the exposure condition and the counting means to leave the film was maintained at the mode is provided when. 2. The camera according to claim 1, wherein said mode is a bracket photographing mode in which photographing is performed while changing the amount of exposure to film. 3. The camera according to claim 1, wherein said mode is an auto shift photographing mode for photographing while changing a combination of an aperture value and a shutter speed under a predetermined exposure amount.