JPH0263028A - Camera system - Google Patents

Abstract

PURPOSE:To eliminate unnecessary operation at the time of selective operating and to make operation when photographing more efficient by permitting a 2nd selecting means to select a desired exposure mode after a 1st selecting means selects the combination of plural exposure modes. CONSTITUTION:Generally, a program mode P, a diaphragm prioritizing mode A, a shutter prioritizing mode S, a manual mode M, etc., are prepared as the exposure mode. The camera system includes the 1st selecting means selecting the combination of plural exposure modes, and the 2nd selecting means selecting one exposure mode from the selected combinations. When the mode M is not required, for instance, the 1st selecting means can group the exposure modes P, A and S. Therefore, when a photographer would like to switch the currently selected mode A to the mode P, selective operation by the 2nd selecting means requires only twice operations; A S P. Consequently, when a photographer selects the exposure mode being used, unnecessary operation is eliminated.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a camera system.

Conventional technology In cameras, exposure modes include program mode (P mode), aperture priority mode (A mode),
Shutter priority mode (S mode).

Manual modes (M mode) and the like are provided, and when shooting, one of these modes is selected to perform exposure. Then, each time you press the normally open selection switch, the mode changes from P to A-.
In the case where the mode is designed to advance cyclically, such as by stepping from S-+M and then returning to P, the mode when the switch operation is stopped is selected.

However, even if there is an exposure mode that the user does not use during shooting, the selection operation is wasteful because the user must advance through the exposure mode that is not used.For example: If you do not use M mode, and the current exposure mode is A mode and you want to select P mode, use A-3-+M=P and 3.
However, since M mode is a mode that the user does not use, selecting via M mode means one wasted operation.

The present invention has been made in view of these points, and it is an object of the present invention to provide a novel camera system that eliminates the need for unnecessary operations when selecting an exposure mode to be used. .

In order to achieve the above object, the present invention provides a camera system in which at least three exposure modes can be selected, including a first selection means for selecting a combination of the plurality of exposure modes;
and second selection means for selecting one exposure mode from the selected combination.

Further, a removable accessory may be provided on the camera body, and the first selection means may be operated when the accessory is attached to the camera body.

In this case, it is preferable to provide a storage means for retaining the combination of exposure modes already selected by the first selection means even after the accessory is removed from the main body.

According to such a configuration, for example, in the above example, when the M mode is not required, the combination of exposure modes can be set to P, A, and S by the first selection means, so that the current A
If you want to select P mode from the state where the mode is currently selected, the selection operation by the second selection means only requires two operations, A-+S-P, and from the state where S mode is currently selected, it is necessary to select P mode from the state where S mode is currently selected. Even if you want to select , you only need to perform one operation of S+P.

In such a case, by allowing the first selection means to select a combination of exposure modes while the accessory is attached, it is possible to have the accessory share a part of the function.

Moreover, in this case, if a storage means is provided so that the combination of exposure modes selected by the first selection means is maintained even if the accessory is removed, the combination of exposure modes selected by the second selection means can be selected even when the accessory is removed. can be executed.

"Taku" L paste Embodiments of the present invention will be described below with reference to the drawings.

In the following description, the entire camera control system using an IC card will be described, and selection of the exposure mode will also be described.

The first (2I) is a circuit block diagram of the camera of this embodiment. In the figure, (μC) is a microcomputer (hereinafter referred to as "microcomputer") that controls the entire camera and performs various calculations. It has an E2FROM and internally writes data. and can be read freely.

(AFct) is a focus detection circuit that performs focus detection,
Consists of CCD, integral control circuit, and A/D conversion circuit.
Information on the subject is obtained for three ranging areas to be described later, and this information is converted into ^/D and output to a microcomputer (μC).

(LM) is a photometering circuit that measures light in four areas (described later), converts the measured light values into A/D, and
/C) as luminance information. (DISPC) is a display control circuit which inputs display data and display control signals from a microcomputer (μC) and causes the display section CD15P) to perform a predetermined display.

In this example, there are two types of IC cards: a mode setting card that sets the camera mode and a program card that determines exposure. Only one of these cards can be installed in the camera, and the camera will Based on the specific mode, control the exposure program. This will be explained in detail later. (ST) is an electronic flash device,
(IF) is the camera's microcomputer (μC) and electronic flash device (
An interface provided between (ST) and (S
TC) is a light control circuit that receives reflected light from a subject during flash emission that has passed through a photographic lens (not shown), and stops the flash emission when the appropriate exposure amount is reached. (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 ↑most shadow lens based on focus detection information, (TVCT) is a shutter control circuit that controls the shunter based on a control signal from a microcomputer (μC), (AVct) is a microcomputer Aperture control circuit that controls the aperture based on the control signal from (μC),
) is a motor control circuit that controls film winding and rewinding based on control signals from a microcomputer (μC). (BZ) is a buzzer that warns you when the shutter speed reaches a speed that causes camera shake. (E) is a battery that serves as a power source, (DI) is a diode for backflow prevention, (
Csu) is a backup capacitor for the microcomputer (μC) and has a large capacity. (RR) (CR)
are the resistor and capacitor for the centrifuge to reset the microcomputer (μC) when the battery is installed.

(Tr+) is a power supply transistor that supplies power to a part of the circuit described above.

Next, to explain the switches, (Sit) is a battery installation switch that turns off when the battery is installed, and when the battery is installed and the switch (SII) turns off, the microcomputer (μC) terminal ()iE) is applied a signal that changes from "L" level to rH, level level, and the microcomputer (μ
C) will execute a reset routine to be described later. (S) is a normally open exposure mode change switch, and the operation of this switch (SEM) and the up switch (S) described later
The exposure mode is changed by operating the up) and down switches (Sdn). (S□) is a normally open function change switch, and the operation of this switch and the up switch (Su
p) The function is changed (for example, switching between continuous shooting and single shooting) by operating the down switch (Sdn). (SCD
) is a normally open card function enable/disable switch that disables or enables the card function when the card is inserted.

(Scos) is a normally open card data setting switch that is operated when changing the mode setting or setting data necessary for the function when a mode setting card or function card (program card) is installed. .

(So) is a photometry switch operated to perform camera operations (for example, photometry and display of various data) other than autofocus (hereinafter referred to as rAFJ) operation, and can be turned on by simply touching the release button (not shown). It consists of a touch switch. The above switch (SEW)
(SFM) (Sco) (SCDS) (SO)
If one of the switches is turned on, the microcomputer (μC
) executes the interrupt flow of (INTI) in FIG. 3, which will be described later. (Sl) is an AF switch that starts AF operation, and when the first stroke of the release button is pressed,
It becomes N. (S2) is a release switch that is operated when performing a shooting operation, and the second stroke (S2) of the release button is
(deeper than the first stroke) turns ON. (Sw
n) is a one-frame switch that is turned ON when one frame of film is wound.

(SA!L) is a switch for performing AE lock (exposure lock), and is composed of a normally open button switch. (SAF/M) is a focus adjustment mode changeover switch for switching between AF and manual focus adjustment.

(Sit) is a normally open change data selection switch for selecting data to be changed. (SF) is a constantly open change data enable/disable switch that enables/disables the data selected by the change data selection switch (Ssi) when the mode setting card is installed and the data setting mode is set. It's a switch. (SEXP) is a normally open exposure mode combination selection switch that selects a combination of exposure modes when a mode setting card is installed and a data setting mode is set. (SFL
Reference numeral 14) is a film detection switch that detects whether or not film is loaded, and is placed on the film rail surface near the spool chamber, and is turned off when film is present. (S+tC) is a back cover closure detection switch that turns OFF when ONL is opened when II is closed.
) executes the interrupt routine described below. (SllW
) is a switch to start film rewind,
When operated, ONL executes an interrupt routine to be described later, and turns OFF when the back cover is opened. (SclI) is IC
This is an IC card installation switch that turns OFF when a card (CD) is installed, and when turned OFF, resets the microcomputer (μC2) of the IC card (CO). (X) is a so-called X contact, which turns 0IIL when the shutter completes one curtain travel, and turns OFF when a release member (not shown) is charged.

(Sup, ), (Sup2) are up switches that change or add data to be changed, and (Sd
n) and (Sdnz) are down switches that also perform subtraction. Exposure mode is manual mode (M mode)
Except for changing the aperture value or shutter speed when
dnl).

(Sdnz) 4f" are switches in parallel, and when either the up switch (Sup+) or (Supz) is pressed, it performs the amplifier function, and the down switch (Supz) is pressed.
dnl) or (Sdnz) is pressed, the down function is performed. When changing the aperture value or shunter speed in M mode (Sup+), (Sdn
l) respectively increase and decrease the aperture value, (Supz),
(Sdnz) increases the shutter speed,
Performs the function of down.

In addition, in the following, when the up switch (Sup) is used, it refers to either the switch (Sup+) or (Sup2), and similarly when the down switch (Sdn) is used, it refers to the switch (Sdn 1) + (Sdn 2).
shall refer to either one of the following. Up switch (S
When the up) and down switches (Sdn) are operated, the terminals (Isup) and (Isdn) are respectively set to “L”.
It is detected when the level is reached.

In Figure 1, the track (old) common to each of the above switches
is connected to the ground potential point (GND).

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

Next, before explaining the operation of the camera of this embodiment, two types of IC cards used here, namely a mode setting card and a program card, will be explained.

(1) Mode setting card: This IC card allows the photographer to select the functions (controllable functions) of the camera that are necessary for the photographer (delete those that are deemed unnecessary), or to choose between two functions. The intention of the photographer by doing.

The aim is to provide cameras that are compatible with photographic techniques. Additionally, this allows unnecessary functions to be omitted, resulting in a camera that is simplified and has good operability when changing modes.Next, we will explain this card and the contents displayed on it.

First, to select the functions of this IC card, (i) 4
(ii) exposure mode selection; (iii)
) AF, lock button function selection, etc.

The four functions in (i) above are (a-1) Highlight reference/shadow reference exposure function (a-2) Exposure compensation function (a-3) Film advance mode switching function (snap shot/single shot) (a-4) A spot AF/multi-point AF switching function, which allows the photographer to select the function required from among these functions. The display related to this selection is shown in Figure 2 (a) among all the display contents shown in Figure 2 (a).
The following are available. In FIG. 2(b), they correspond to the functions (al) to (a-4) described above in order from the left side. If the photographer does not need only the highlight reference/shadow reference exposure function (al), use the method shown in Figure 2 (C).
) is displayed.

For each selected function, the display regarding the use or switching of that function is as follows: Highlight criteria - 1 - Figure 2 (d) Shadow criteria - 1 - Figure 2 (e) Exposure compensation + side -・-
Figure 2) Exposure compensation - Side control - Figure 2 ((2) Continuous shooting mode - Figure 2 01) Single shooting mode --- Figure 2 (i) Spot A F ---
-1~--Figure 2 (j) Multiple points A F--------・-
Figure 2 [present]). In addition, continuous shooting/single shooting, spot AF
/Multi-point AI' is always selected even if one of the functions (for example, snapshot) cannot be switched. However, since switching is not possible, it is not displayed.

The display shown in FIG. 2 shows that the exposure compensation function and the film winding mode switching function are selected, and that the exposure compensation + side and single shooting mode are controlled.

Next, the exposure modes related to the exposure mode selection in (ii) above are: (b-1) Program mode (P mode) (b-2) Aperture priority mode (A mode) (b-3) Manual mode (M mode) ) (b-4) Shutter priority mode (S
As a basic rule, the P mode is always set, and the remaining three modes (A, M, and S modes) can be selected in combination. Therefore, there are eight combinations: AMS MS AS AM ASM, and the display shows the selected combination among the four modes (however, PROGRAM is represented by P) in Figure 2 (E) when setting the mode. The display is performed as shown in FIG. 2(n), for example, and one exposure mode selected at the time of photographing is displayed [FIG. 2(0) (A mode selection)]. In addition, when in P mode, PROGRA
It is indicated as M [Fig. 2 Φ].

Next, to select the function of the AE lock button in (iii) above, (C-1) Hold the camera power in the AE lock state while pressing the AE lock button (C-2) Press the AE lock button once Press the AE lock button again in the AE lock state, or turn the power hold OFF
The AE lock state is released, and this display is not displayed during normal shooting. When the settings are made based on the card, the display is as shown in FIG. 2(Q) in (C-1) and FIG. 2(r) in (C-2).

Note that the shutter speed and aperture value are normally displayed in this area as shown in FIG. 2 (S). In FIG. 2 (S), 1000 is the shutter speed, and 5 and 6 represent the aperture value.

Next, as a choice between the two functions, (d-1) film counter forward calculation or subtraction (d-1)
2) With or without auto-return at the end of the film (d-3) At the end of rewinding, part of the film leader is rolled into the cartridge or left outside the cartridge (d-4) With or without a camera shake warning buzzer (BZ); There are 16 possible combinations, numbers are given to the combinations shown in Table 2, and they are displayed as shown in FIG. 2 (1) at the time of setting and other times. During normal shooting, this part serves as a film counter.

(II) Program card: The program card is used to control exposure programs and various camera controls designed to take pictures of moving subjects in relatively bright locations using a high-speed shutter that prevents camera shake. (Details will be explained later).

Next, we will explain the operation of the camera using a microcomputer (μC) shown in Figures 3 onwards.
) will be explained based on the flowchart, and each part will be explained in detail as necessary.

When the battery (E) is installed, the battery installation switch (S■)
turns OFF, and the terminal (RE) changes from “L” level to rH.
, 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). The microcomputer (IC) then executes the (RESET) routine shown in FIG. In this routine, a microcomputer (μC
) first performs an initial setting based on the fact that the battery has been installed (#5). This subroutine is shown in FIG.

In FIG. 4, the microcomputer (μC) prohibits all interrupts to this flow and sets all output terminals to the "L" level. Also, reset all the flags in the RAM and set the flag (BATF) indicating when the battery is installed (11
100-1110). This allows the exposure mode to be set to P mode, spot/multi-point AF to multi-point AF mode, single shot (S)/
Change continuous shooting (C) to single shooting (S), exposure compensation, highlight
(H)/Shadow (S) mode is set. The contents of this functional data are shown in Table 3.

Next, it is detected whether the mode setting card of the two types of IC cards mentioned above has been inserted at least once and the mode setting has already been performed by checking the contents of E''FROM (the contents of MSb4, which will be described later). If the settings have not been completed, interrupts other than those caused by IC card insertion (CDINT) are prohibited and the process returns (It135.1114
0). If the mode has been set, check the contents of the E"PROM (Msb to be described later) to determine which mode has been set.

~MSb,) and determines the part where the changed data is to be displayed. Highlight/Shadow mode (H/S
mode), exposure compensation mode (+/- mode).

Single shooting/continuous shooting switching mode (S/C mode), spot/
It is detected whether the mode is set in the order of multi-point AF switching mode (S/A mode), and if it is set, change data for the first set mode is set (11145 to +1182). Tables 4 and 5 show the RAM change data and E2FROM setting mode data. Note that the steps (11145 to 1182) correspond to determining the position of a cursor, which will be described later, in terms of display.

Next, in order to display these setting modes, control is performed to send data to a display control circuit (DISPC).

First, set the terminal (C3DISr') to rH level, notify the display control circuit (DISPC) of data communication, create data, perform serial communication, and when the data transfer is completed, set the terminal (CSDISP) to "L". level and outputs the completion of serial communication to the display control circuit (DISPC) (#1B5 to +1200).

To simply explain the operation in the case of serial communication, first, a clock is output from the serial clock terminal (SCK) in response to a serial communication command. The output side outputs one bit of data in synchronization with the rising edge of this clock, and the input side inputs one bit of data in synchronization with the falling edge of the clock. By doing this as many times as necessary, the necessary data can be obtained.

An example of a normal shadow state display is shown in FIG. 2(u).

In the example of Fig. 2 (u), the displayed contents include shutter speed (1000), aperture value (5, 6), and AE.
Mode (PROGRAM), number of films (with or without film) (17), and function mode (shape shown in the bottom row) are displayed.
1 byte (8 bits 256
It is sufficient to prepare one each. Display control circuit (
DISPC) inputs these signals and decodes them to display a predetermined display.

Now, the required data is bit (MSb, ) data in ε2PROM to display the shutter speed and aperture, and bit data (MSb, ) in E2PtlOM to display the AE mode.
? 1Sb6~MSba), E is displayed for the number of films.
2FROM bits (MSb, ~MSb, z),
Regarding the function mode, E2PRoM no hit (MSb0 to MSb4), changed data bit (
CDb, ~CDbz), the microcomputer (μC) processes these data and provides it to the display control circuit (DISPC) as display control data.

An example of the display displayed on the display unit (DISP) in this manner is shown in FIG. 34(a). In the figure, (1) is a cursor. The microcontroller (μC) is (11205) and is 0.
Wait 5 seconds and let this display run for 0.5 seconds. Then, the number of films stored in E”FROM is J(MSb+3
~MSh, a).

The contents of film sensitivity Sv (MSb + q to MSbzg) are read out and transferred to the number of films N13 film sensitivity Sv in the RAM. Thereafter, card data communication I is performed to know whether an IC card is attached or not and the type of IC card (11210).

The subroutine of this card data communication I is shown in FIG. 5(a).
Shown below. In the figure, first, a terminal (C3CI) is used to inform the IC card (CD) of communication with the IC card (CD).
)) to "H" level, set to data output mode, and send data indicating data communication I (see Table 6) to the IC card by serial transfer (1300 and #305)
.

A microcomputer (μC) takes a certain amount of time to manually create and output the necessary data on the IC card (CD) side.
) waits (#310). This time, data is sent from the IC card (Cl)), so it operates in input mode and performs serial transfer with the IC card (CD) (#315
), when this is completed, the terminal (CSCD) is set to "L" level (#320).

Next, the type of IC card is determined in (11321), but if it is a mode setting card, the data only indicates the type of IC card, so the process immediately returns.
On the other hand, in the case of a program card, the data includes not only the type of IC card, but also the AF mode continuous/one shot (details will be described later), AF zone spot/multipoint, metering zone spot/multipoint, continuous. Since function data indicating either photo/single photo shooting or no specific setting (setting by the photographer) is included, next determine whether or not the card function is selected (# 322)
. Card function selected (CDFNF = 1)
When, the function data Fbz, Fbs, Fbs, F
Rewrite the bits of b+z and set the data 1132
3), Return.

On the other hand, if the card function is not selected, the process returns without rewriting the data.

Returning to Figure 4, the microcomputer (μC) inputs the input data (
(See Table 7), it is determined whether an IC card is installed or not, and if it is not installed (Ckbo=O), the process returns without displaying the type of IC card. I
When a C card is installed (Ckbo=1), I
Determine the type of C card and select the mode setting card (Ckb+
~Ckbb=00u, where H indicates a hexadecimal number), the display data for this IC card (Ckbo~Ck
b&) 11230), program card (C
kb+~Ckbb-01N), program display data (Ckb,~Ckb6) is created (1245).

In these cases, the above-mentioned data Ckb, to Ckb6 and IC card installation data CkbO are respectively set as display data on the shutter speed display section, and display data other than these is set to "0" (not set). These display data are sent to the display control circuit (DISPC) (1
1250 to #260) is displayed for a certain period of time (0.5 seconds).

FIGS. 34(b) and (C) show display examples in this case, and FIG. 34(b) shows the display when the program card is installed,
Figure (C) shows the display when the mode setting card is installed. Here, the characters PRO and F-3E are the bits Ckb+-
CARD depends on Ckbo.

The microcontroller (μC) waits for a certain period of time for this display (
11270), then enable all interrupts (#
271), proceed to step (110) in FIG.

In Figure 3, after completing the initial stage (#5), the exposure mode change switch (SEM), function change switch (SF), and card function enable/disable switch (SC8) are activated.
) It is determined in step (1110) whether either the card data setting switch (Scns) or the photometry switch (So) is turned on based on the level of the terminal (IPS), and if none of the above switches is turned on. case (IP, -“H”), battery installation flag (B^
↑F) is set or not in step (1115)
), and if it is set, it is assumed that this step has been reached without doing anything after the battery is installed, and step (#4
Jumping to step 5), the display is turned off and the IC card (CD) is turned off according to the flow from step (#45) onward. First, all data is set to "0" (not set), and this data is sent to the display control circuit (DISPC).
) (#45 to 1160). Therefore, the display is completely turned off. Note that a command for turning off all lights may be provided and outputted to the display control circuit (DISPC), so that the display control circuit (DISPC) turns off all lights in response to this.

After sending the light-off data to the display control circuit (DISPC) as described above, the microcomputer (μC) sends a sleeve sign (command to stop the IC card) signal to the IC card (CD) (#65 to #75). This sleeve sign is constructed by bits Csb and Csb both becoming 1 as shown in Table 6.

After that, the transistor (Try) is turned off by setting the terminal (4) to "L", and the flag indicating the AE clock (AELF) and the flag indicating when the battery is installed (BATF) are turned off.
), and all interrupts are enabled and stopped (#77 to #95). Note that this halt (HALT) also halts the oscillation of the built-in clock.

In the above step (110), five switches (S
i1. I), (SFII), (SCD), (Scns
), (So), the process proceeds to step (#90), and a flag (BATF) indicating when the battery is installed is set.
) and the next step (11100)
Then, a flag (OPF) indicating that one of the five switches has been operated is set, a routine (SO) is executed, and the process returns to step (1110). The routine (SO) is a routine that performs photometry, AF, display, exposure control, etc., and will be described in detail later.

In step (1110), if none of the five switches are turned on and the battery is not installed (BATF = O), the flag (OPF ) is set (#15, 125). When this flag is set, the timer (T,) for power retention is reset and started, and the flag (OFF) is reset (130. #35). Here, the timer (
TI) is reset-started (1130) by -
degree step (1110) to (1190) (+110
0) and went through the routine (Itloo), but currently none of the five switches are pressed, but this is to extend the power retention for a certain amount of time in consideration of the possibility that they may be turned on again. Yes, flag (OFF)
Step 1135 is step 130.
This is to show that it has passed.

In step (125), if the flag (OFF) is not set, step (#30) (11
Skip step 35) and detect whether 10 seconds have elapsed for the reset-started timer described above (1140)
If 10 seconds have elapsed, the process proceeds to steps after (1145) to turn off the display and stop the IC card (CD). If 10 seconds have not elapsed, step (11110
) and return to the [SO3 routine].

Next, we will explain how to control the camera when an IC card (CD) is inserted.
A signal that changes from the "L" level to r)iJ level is input to NT), and the interrupt routine (COINT) shown in FIG. 4 is executed. When entering this routine, the microcomputer (μC) sets a flag (OFF) to stop lens driving and maintain power supply (11290.1129).
2) Then, set a flag (CDFNF) to forcibly add the card function (11293), and set a flag (CDIF) so that the card type is not displayed in the display control described later (11294). . By setting this flag, the post-card installation routine (SO
), the type of installed card is always displayed the first time.

Next, in order to give top priority to displaying the type of installed card, all other interruptions to this flow are prohibited in step (11295), and the process proceeds to steps after step (11210), and the type of IC card is displayed as described above. After displaying for a certain period of time as shown in FIG. 34(b) or (C), all interrupts are allowed and the original flow [Step <1130 in FIG. 3]
)) to return. Switch (StJ, (SFM) (Sco) 1 (
When any one of Scns) and (So) is turned ON and a signal that transitions from the "H" level to the "L" level is input to the interrupt terminal (INT,), an interrupt (TXT, ) and enters the step (+19
0) Execute the following flow.

In addition, in the stopped state (HALT), any interrupt (INTO) (INTz) or (COINT)
The clock starts oscillating even if the clock is applied, and the clock (φ) is also sent to the IC card (CD).

Next, the above routine of [SO3] will be explained with reference to FIG.

First, interrupts of (INT,) to this flow are prohibited (#400). This is because if the interrupt (INTO) shown in FIG. 3 occurs during the main control, the control operation will not proceed further. Next, (11405) microcontroller (μC
) terminal (4) of the inverter (IN
By applying a low level to the base of the PNP transistor (Tr+) through the transistor (T
r+) to 011, photometric circuit (LM), AF circuit (AF
ct), etc. Next, information specific to the interchangeable lens is input from the lens circuit (LE) (#410).

This is shown in FIG. 7 and explained. First, the terminal (C5LE
) to rl (J level +1600), perform serial communication, and input information from the lens (11605). This information includes whether or not a lens is attached, the lens' open F value (/Lvo) + maximum aperture value (^vmax) + distance information, focal length information, and a coefficient for converting the amount of defocus into the amount of lens drive (hereinafter referred to as this). is called the "K value").

After inputting the lens information, the terminal (CSLE) is set to "L" level and the process returns (11610).

Returning to FIG. 6, the microcomputer (μC) continues to input electronic flash device information from the electronic flash device (ST). The information includes a guide number (GN) that indicates the amount of light emitted,
There are three types of information: whether the battery is in a fully charged state, whether it is in forced light emission, or whether it is in automatic light emission (this will be described later). Here, the operation of the information communication method will be explained. First, Fig. 9(a) shows an electronic flash device (ST),
FIG. 9b) shows a circuit diagram of the interface (IF), and FIG. 8 shows a flowchart of data input from the electronic flash device of the camera.

In Figure 8, the microcomputer (μC) has a terminal (C3ST
) is set to the "H" level for a certain period of time (1+), and this signal is output to the electronic flash device (ST) (11650). The electronic flash device (ST) detects the time (t) of this signal, recognizes the data output mode, and outputs data in accordance with the clock from the microcomputer (μC) (#655).

In the interface circuit (IF) shown in FIG.
). At this time, both signals input to the OR circuit (OR21) are at the "L" level. In the electronic flash device (ST), the signal from the terminal (sr+) is input to the AND circuit (ANDll), so the AND circuit (
ANDll) becomes active and outputs the signal from the oscillation circuit (O3C) to the counter (CNT lz). The counter counts this and measures the time (tl).

When the time (tl) is counted, the terminal (T1) is set to rH level and the RS flip-flop (SR++) is set.

At this time, the RS flip-flop (SRlz) remains reset, and its output is at the "H" level. Therefore, the AND circuit (AND+g) becomes active.

Next, the microcontroller (μC) uses a serial communication clock (
SCK). This clock (SCK) is output to the terminal (ST, ) of the electronic flash device (ST) via the OR circuit (OR2□) of the interface circuit (IF). In an electronic flash device (ST), an input clock (to SC) is input to a clock terminal of a parallel/serial conversion circuit (P/S) via an AND circuit (AND, □). This parallel/serial conversion circuit (P/S) outputs a guide number (GN), a signal 9 indicating a charging completion state, and a signal indicating forced light emission or automatic light emission in synchronization with the clock. Electronic flash device (ST) counter (CNT1
1) Counts the input clock (SCK), and when a predetermined required number is counted, the "H" level is output to the OR circuit (
oil,, ). This signal is an OR circuit (OR
,,), is input to the reset terminal of the counter (cNT+□) via the one-shot upper circuit (O5++), and the counter is reset. The counter (CN7)
is a counter that resets after counting a predetermined number of clocks.

In addition to the above-mentioned circuit elements, the electronic flash device includes a battery (GST) as a power source, a booster circuit (UV) for boosting the voltage of the battery to the voltage required for flashlight emission, and a voltage from this booster circuit (UV). A rectifier diode (D,) that rectifies the output voltage, a main capacitor (MC) that stores the energy necessary for flash light emission, a charging voltage detection circuit (CV[l) that detects the charging voltage of the main capacitor (MC),
Light emission control circuit (FCC) that controls the start and stop of light emission
)have.

Returning to FIG. 6, after the microcomputer (μC) inputs the above flash data, it performs card data communication I with the IC card (CD) to determine the type of the IC card (CD) (11420). This card data communication 1 has already been explained with reference to FIG. 5, so the explanation will be omitted here. After communicating the card data, it is determined whether the flag (SETF) indicating that the IC card is inserted and the data setting mode is set is set (114).
25), and if it is not set, check whether the AF start switch (Sl) is ON or not by checking the terminal (IF).
, ) (#427). If the above switch (Sl) is turned on, CTP &= 'L
' level), controls the AP (11429). On the other hand, when the flag (SETF) indicating the data setting mode is set or the switch (Sl) is set to 0FFC.
IP & = 'H' level), in order to prohibit AF operation, a signal to stop the AF drive motor is output to the lens control circuit (LECN) to stop the lens drive.
431), flag indicating that AF is not being performed (^F
IIF) (1435). When the data setting mode is set in this way, AF control is prohibited and data setting is prioritized, so even if the AF start switch (Sl) is pressed by mistake during data setting, AF operation will not be performed. That's what I do.

Here, the flowchart shown in FIGS. 10(a) and 10 et al. regarding the above-mentioned AF control will be explained with reference to FIG. 11 showing the focus detection range in the shadow screen.

At that time, the photometric range will also be explained.

First, in Fig. 11, the outer rectangle (2) indicates the darkest screen. (LM,) to (LM4) in it indicate the photometry range, and (API) to (AF3) indicate the focus detection range. shows.

Regarding the focus detection range, the camera has a spot/focus detection range.
Multi-point AF can be switched, and when spot AF is selected, AF is performed based on subject information in the focus detection range (AFL), and when multi-point AF is selected, the above three ranges (AFL) are selected. ) to (AF3), AF is performed to focus on the subject closest to the camera. Below, (API) is the first island, (AF2)
will be called the second island, and (8F3) will be called the third island.

To explain the AF control shown in the flowchart of FIG. 10(a), first, it is determined whether the lens is attached based on the input signal from the lens (11705).
. Next, if a lens is attached, it is determined whether the focus adjustment mode is the AF mode based on the level of the terminal (IP, .) (11710). And step (11
705) and the lens is not attached, or (11
710) and not in AF mode (manual mode).

IP. = "H" level), a flag (AFNF) indicating that AF is not being performed is set and the process returns (11800).

On the other hand, when the AF mode is selected (IP,.

= "L" level), a flag (AFNF) indicating that AF is not being performed is reset (11715). The microcomputer (μC) controls the accumulation (integration) of the charge generated according to the amount of incident light in the COD for distance measurement, and after the integration is completed, the integrated value is converted into digital data and the obtained data is manually input (#720 .1725). Then, it detects whether it is spot AF or not (detected by Fb of the function data), and
If F (Fbz = 1), a flag (AP) indicating that AF is being performed is set based on the second island.
2F), the day focus amount (Dh) of the second island is calculated from the input data, and this is set as the defocus amount for lens driving (#735 to 1745).

On the other hand, when the multi-point AF mode is selected, the first
．． Second. 3rd Island Day Focus I (DF)
Calculate the day focus amount for the subject closest to the camera among the above (I750-#765)
. This subroutine for determining the day focus amount is the 10th subroutine.
As shown in Figure (b), the current day focus amount is negative when the front focus (the subject is farther from the lens's focus position) is negative, and when the subject is at the rear focus (the subject is closer to the camera than the lens's focus position). indicates a positive day focus amount, and its absolute value indicates the day focus size.To detect the subject closest to the camera, the maximum (positive, It is sufficient to detect the day focus amount (including negative values), and it is assumed that the main subject exists in the focus detection area.

In Fig. 10(b), the microcomputer (μC) first resets the flags indicating islands (AFIF to 8F3F), detects the maximum day focus island, and uses the detected island day focus amount for lens driving. Set the above-mentioned flag (AFIF-AP3F) corresponding to the island as the day focus amount and return (I
t 810-1865).

Returning to FIG. 10(a), the microcomputer (μC) determines whether or not the lens is in focus based on the day focus amount for driving the lens (#770).
When the focus is determined, the flag (A
FEF) (11780). Then, the focus buzzer will sound for a certain period of time to notify you of this.11782)
, return. If it is not in focus in step (11770), one-shot AF (-once in focus, subsequent lens driving is stopped, and focus detection may also be stopped at this time) or continuous AF (after in-focus, (+1782) uses data Ckbs (this will be described later). In the case of one-shot AF (Fba=O), a flag indicating focus (A
(11783) determines whether FEF) is set, and if it is set, returns. If not set, or if continuous AF is used (Fb, = 1), the process advances to step (1785) and lens drive is controlled. In step (11785), the driving amount (N) of the lens is changed to the day focus amount (DF
) by the value of , and then step (
#790) to drive the lens, and step (#790) to drive the lens.
795), the flag (AFEF) indicating focus is reset and the process returns. The lens drive in this step (11795) is performed by the lens drive circuit (LECN) driving the lens by a value corresponding to the drive M (N).

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

To explain this as shown in FIG. 12, first, the state of each key switch is checked and this is stored in memory (+1900).

Next, set the flag (SET) indicating that the card is in card setting mode.
F) is set or not is determined by (11905), and if the flag (SETF) is set,
Steps to avoid changing exposure mode or changing functions (
11930). If the flag (SETF) is not set, the process advances to step (11910) and it is determined whether the exposure mode change switch (S,) is turned on. Here, when the switch (S,) is ON, the process proceeds to the change subroutine (11915) and returns (details will be described later). The above switch (S
■) is not ON, step (#920
), it is determined whether the function change switch (SF14) is turned on. And this switch (SFM)
is ON, the subroutine for that change (I
t925) and return.

Here, the above two subroutines are shown and explained in FIGS. 13 and 14, respectively. First, the exposure mode is changed.
Each time the up switch (Sup+ or 5upz) is turned on, it progresses cyclically to P-+A-+S-M and then back to P, and then turns on the down switch (Sdn
, or 5dnz) is turned on once, P4-A
-5-M, and then P, then M, and so on, cyclically in the opposite direction to the above-mentioned up direction, depending on the exposure mode set by the IC card (CD). mode is changed, and unselected modes are skipped.

To explain this with reference to FIG.
) determines whether the up switch (Suρ1. or 5upz) is turned on in step (111000), and if it is not turned on, the step (1110
Proceed to step 55). When it is ON, step (++
tO05) and save the RAM function data (Fbn) (
Check Fbo) (Fbl) to determine whether P mode is currently selected as the control exposure mode. If so, proceed to step (111010) and internally check whether A mode is selected by the IC card. E”F
(MSb6) ~ (Msbe) of ROM (see Table 4)
If it is selected, change the exposure mode from P to A and change the function data (Fbo, Pbt) to (0,0
) to (0,1) and return (#1015)
. In step (+11010) above, when it is determined that A mode is not selected by the IC card, the process proceeds to step (#1025), where it is determined whether S mode is selected, and here it is determined that S mode is not selected. In some cases, the process further advances to step (11040) to check whether the M mode is selected and to sequentially search for modes selected by cards. Then, if there is a selected mode, it is set. And A, S
, when M mode is not selected, that is, when only P mode is selected, P mode is selected (111050
).

Similarly, select A mode as the current control exposure mode (Fb6. Fb, =0.1).
S mode is selected by the IC card, but if it is not selected, determines whether M mode is selected, changes the exposure mode to the selected mode, and changes bits (pbo) and (pb,). and return (
111020-1030).

Now, when S mode is selected as the control exposure mode (Fb, , Fb, = 1.1), M mode is
Determine whether it is selected by the C card, if selected, set to M mode, if not selected,
Return to P mode (111035-1045
). When the control exposure mode is not the S mode, that is, when it is the M mode, the mode then becomes the P mode. This is because the P mode is always selected in this embodiment.

In step (11055), the down switch (Sd
When the up switch (or 5dnz) is turned on, the up switch (
Supplement or 5upz), so the explanation will be omitted.

In addition, both switches (Sup) (Sdn) are OFF.
If F, do nothing and return.

Next, the function change switch (SFX) shown in Fig. 14(a)
The control when is turned on will be explained. Microcomputer (μC)
has the four functions mentioned above, i.e. highlight/shadow (
H/S), exposure compensation (+/-), single/continuous shooting (S/C)
), 1 out of Spot AF/Multi-point AF (S/A)
The EtPROM bit (M
sbo to Msbz), and if none of these bits are set, it is determined that there is no mode selection and returns (111200). If at least one is set, it is assumed that at least one mode is selected, and the step to change data (1112
05) Execute the following flow. The microcomputer (μC) is
It is determined whether the switch (SSE) indicating the function to be changed is turned on, and if it is turned on, the function to be changed proceeds in the order of H/S → +/− → S/C → S/A. ,S/
The process proceeds cyclically, returning to H/S, but if no function is selected by the IC card, it is skipped over.

In step (11210), when the function to be changed now indicates H/S mode (RAn shown in Table 5)
Day 9 (7) CDbo, CDb+, CDbt=0.0
．． 0), +/- mode is selected by the IC card or not is determined by the bit (MSb, ) of the E''PROM in step (11215), and when +/- mode is selected, 0/- mode is selected. The mode is set to data change mode, and returns as data CDbo to CDb, = 0°0.1 (111220).If +/- mode is not selected, proceed to step (111227), and S/C mode is selected. If the A/S mode is not selected (MSbz=0), proceed to step (#1240) and determine whether the A/S mode is selected by (MSbs). When neither is selected (Msbi=o), an additional step (+11
250) to determine whether the H/S mode is selected (MSbo). Now, at least H/S mode is selected, so let's change the function of H/S mode.
,,cab,~cob,=0.0. Let it be O. S/C
mode.

When the A/S mode is selected, CDb, to C[lb2 are set to change this mode.

Similarly, the next mode of the function to be changed is 0.
1/S mode is 10/- mode, +7- mode is S/
C mode, S/C mode, S/A mode, S/A
If mode, H/S mode) is selected by the card, and if it is selected, the change mode is set to the next mode, and if it is not selected, H/S→+/-→
The function selected by the IC card is searched in the order of S/C-+S/8→H/S・-・・・−, and the selected function is set as the function to be changed to data CDb, ~CDb2.
Set and return.

As can be seen, modes not previously selected by the card will be skipped with respect to the change mode. For example, if the selected changeable mode is +7- and S/C
If the function change switch (So) is pressed, the flow goes to step (#1225), and then to step (111227), where the S/C mode becomes the mode to be changed. On the display, this means that the cursor moves from 10/- to S/C. next,
When the function change switch (SF, ) is pressed again, the flow goes to step (11235) and from there to step m.
240)→(111250)→(11215), 10/- becomes the mode to be changed, and the cursor on the display moves to 10/-. In these cases, 11/S mode and A
Since the /S mode is not selected, it is effectively skipped in terms of setting the change mode.

In step (111205), switch (Sst
) is not ON, step (111265
).

In step (111265), the up switch (Sup
l or 5upz) is turned on, and if it is turned on, it is determined from the data (CDb, ~CDbz) which function should be changed now, and if it is in H/S mode, it is determined whether the function to be changed now is Data of the set mode (Fb,)
(pbt) and selects the next mode (→H-3→
11/Set data (Fb, ) and (Fbt) in order to transition to cyclic progression (without S).1l127
0. IL275), return.

If the function is 10/- mode (111285), 0.5 is added to the exposure correction amount (ΔEν), and the process proceeds to a subroutine (111287) for determining the magnitude. This subroutine is shown in FIG. 14(b). If the correction amount (△Eν) is positive, the data Fb, , FbS = 0 is considered as a positive correction.
．． 1, and if it is negative side correction, data Fba, Fbs
=1. O, and if the correction is zero, no correction is assumed and data Fb4. Return with Fbs = 0.0 (111350 to #1370).

Returning to Figure 14 (a), if it is S/C mode, it is determined whether the current mode is single shooting (S) or continuous shooting based on the data (Fbz), and the mode is set to be the opposite of the current mode. 111295) and return. When it is not in any of the above three modes (II/S mode, 10/- mode, S/C mode), that is, when it is S/A mode, the current mode is spot AP (S) or multi-point AP (A').
), and change the data (Fbz) so that it is opposite to the current mode.
11300), returns.

In step (111265), the up switch (S
If the down switch (Sdn or 5upz) is not turned on, the process proceeds to step (111305), where it is determined whether the down switch (Sdn or 5dnz) is turned on, and if it is not turned on, the process returns. If it is turned on,
When changing the mode within +1/S mode, the order of change must be reversed (←H4-3-14/No S←),
In 10/mode, the exposure compensation amount (△Eν) is 0.
Except for pulling 5Ev, use the above-mentioned up switch (Sup
, or 5upz) is ON, so the explanation will be omitted (111310 to #1340).

Returning to Figure 12, exposure mode change switch (Srs)
.

When both function change switches (SFM) are OFF, the aperture value (Av
), the process advances to step (I927) showing a subroutine for changing the shutter speed (Tv).

This subroutine is shown in FIGS. 21(a) and 21(b), and will be explained first.
It is determined in step (111800) whether or not the switch (up+ or 5upz) is turned on, and if it is not turned on, the process proceeds to step (11805) and the down switch (Sdn
I or 5dnz) is turned on,
Returns when it is not turned on. When the up switch (Sup+ or 5upz) is turned on, the process proceeds from step (lt1800) to step (11810), and it is determined whether or not the M mode is set. When the mode is M (Fb, , Fb, -1, O), it is determined whether the second up switch (Supi) is turned on (#1825). When it is ON, the shutter speed (Tv) is changed by adding 0.5Ev to the current shutter speed (Tv) and changing the new shutter speed (Tv).
v) value, and it is determined whether this value exceeds the maximum shutter speed value (7v+nax) that can be controlled by the camera (111850.111855). If this value is exceeded, set the maximum shutter speed (Tvmax) as the shutter speed (Tv) value; if not, return without doing anything (111860) Step (1)
11825) turns on the second up switch (Sup2)
In other words, when the first up switch (Sup
+) is ON, the aperture value change mode is assumed, and the aperture value (^ν) is set in step (111830).
) is added to 0.5Eν, and it is determined whether this exceeds the maximum controllable aperture value (Avmax) (111
835), if it exceeds, set the maximum aperture value (Avmax) as the aperture value (^V) +11840)
, if it is not exceeded, do nothing and take step (111
845) to determine whether or not the mode is P mode, and if it is the P mode, proceed to step (It1905) of the flowchart of FIG.
Tv) is decreased by 0.5Ev. Returns if not in P mode.

If it is not M mode in step (111810), the process advances to step (#1815) to determine whether it is P mode or A mode, and selects either P mode or A mode (Fbo, Fbl = 0 .0 or 0,1), proceed to step (1!1830) and set the aperture value (Av).
When it is neither mode, that is, S mode (Fbo, Fb, -1, 1), step (1) is performed.
11850), the shutter speed (Tv) is increased.

In step (111805), down switch (Sdn+
or 5dnz) is turned on, the display shown in Fig. 21 (b
), the process proceeds to step (It1865) to determine whether or not the mode is M mode, and when the mode is M mode (Fbo, Fb
l = 1.0), the second down switch (Sdnz) is O
It is determined whether or not it is N (111880). Second
If the down switch (Sdnz) is turned on, 0.5Ev is subtracted as a decrease in shutter speed (Tv) and the process returns (111905).

When the second down switch (Sdnz) is OFF, step (11885) lowers the aperture value (Av).
0.5Ev is subtracted, and then in step (11890) it is determined whether the value is smaller than the open aperture value (Avo), and if it is, the aperture value is set as the open aperture value (Avo) (111895).

Next, step (11900) determines whether it is in P mode.
Judge by. In the step (111890),
If the aperture value (Av) is not smaller than the open aperture value (Avo), step (111895) is skipped and step (111900) is entered. This step (#190
If it is P mode in the judgment of 0), the above-mentioned Fig. 21(a)
Control flow for increasing the aperture value (11850 to 1118
Proceed to step 60) and return if the mode is not P mode.

In step (#1865), if it is not M mode, in steps (11870) and (1875), P
It is determined whether the mode is P mode or A mode, and if it is P mode or A mode, step (111885
), proceed to the flow for controlling the aperture value reduction, and if not, proceed to step (#19) assuming that the S mode is in effect.
Proceeding to step 05), the shutter speed is controlled to decrease.

Returning to FIG. 12, after passing through step (+1927) showing the subroutine for changing the aperture value (Av) and shunter speed (Tv), or step (11905).
), after it is determined that the flag indicating that the card is in the card setting mode is set, step (11930) is executed.
Proceed to.

In this step (#930), a normally open switch (SC) is used to enable or disable the functions configured by the card.
Determine whether or not O) is turned on, and if it is turned on, the card function in step (#935) is enabled.

Proceed to the invalid switch-on (Scn ON) subroutine.

This is shown in FIG. 15 and will be explained. First, step (11
1400), it is determined whether or not the IC card (CD) is loaded in the camera based on the data (CkbO).
If the C card is not loaded (Ckb, =O),
Return immediately. When the mode setting card is loaded, the card function enable/disable switch (SC0) is operated and a flag (
CDF) is set (+11
405) If it is set, it is assumed that the valid/invalid switching has already been completed during the operation and the process returns. If it is not set, proceed to the next step (
Step 111410) sets this flag (CDF). Then, in step (111415), the flag (CDFNF) indicating whether the card function is enabled/disabled is determined, and if it is not set, it is set to disable the card function. 111420), and if it is set, reset it to disable the card function (111425)
, return.

The flow when the card function enable/disable switch (scn) is ON in the determination at step (#930) in FIG. 12 was explained above according to FIG. 15, and the card function is enabled at step (+1930) /When the invalid switch (SC8) is OFF, step (119
Proceed to step 40).

The flow of this step (11940) will be explained with reference to FIG. 16. First, in step (11450) it is determined whether or not an IC card is installed, and if the IC card is not installed (data Ckbo = 0). returns and when the IC card is loaded (Ckbo =
1) proceeds to step (111455) and the first step described above.
It is determined whether a flag (CDF) indicating that the flow after step (11405) in Figure 5 has been set is set, and if the flag (CDF) is set, the next step (+11460 ), resets this and returns, and if the flag (C[IF) is not set, returns as is.

Returning to Figure 12, the microcomputer (μC) then steps (#
945) to change the mode using an IC card or set or reset the data setting mode.
CDS) is determined to be ON or OFF, and if it is ON or OFF, the process returns through steps (1955) and (11950) related to the control of the respective subroutines. This will be illustrated and explained in FIGS. 17 and 18.

First, Figure 17 shows the subroutine when the switch (Scns) is turned on, and the microcomputer (μC)
In step (+11500), it is determined whether the mode setting card is installed, and if the card is not installed (Ckb, ˜Ckb, ≠0011), the process immediately returns. If the mode setting card is installed (Ckb, -Ckb6=OO□), this flow is 1
Determine whether the flag (CDSF) indicating that the time has passed is set (+11510), if not set, set this (111515), if set, skip step (+11515) and return. do.

Next, the O of the switch (Scns) shown in FIG.
To explain the FF subroutine, first, it is determined in step (#1550) whether or not the mode setting card is installed, and if it is not installed (Ckbl~Ckb, ≠00
, I) returns. If installed (Ck
b+~Ckbb=00H), the switch (Sc
.

, ) has been operated and the flag (CDF) indicating that the flow of (5cos ON) has been executed is set (111555), the flag (C
DF) is not set, return (#1
555). When the flag (CDF) is set, it means that the switch (Scns) has been turned on or off to enter or release the data setting mode.
In order to determine either of these, it is determined whether a flag (SIETF) indicating the data setting mode is set (111560). As a result, if it is determined that the flag (SETF) is set, the flag (SETF) is reset in step (111570), and then the flag (WRTF) indicating data writing to E''PROM is reset in step (111572). Set and switch (Scn
Assuming that the data setting mode has been canceled by the operation in step s), the flag (CDf'
) to cancel data setting mode. If it is not set, this flag (SETF) is set as a transition to data setting mode (+11
565), resets the flag (CDSF) (#1575), and returns.

After completing the key setting control shown in FIG. 12 as described above, the microcomputer (μC) moves to step (1) in FIG.
1440) to step (#442), where I
It is determined whether or not a flag (SETF) indicating that the C card is installed and the data setting mode is set is set, and if it is set, the process advances to step (11455) to execute the card data communication routine (2) to be described later. If it has not been set, the process advances to step (+1445), where photometric data is input from the photometric circuit (LM) and a spot photometric value used for exposure is created. Here, creation of photometric values will be explained with reference to the photometric range shown in FIG. 11 and the flowchart for inputting and creating photometric data of the microcomputer (μC) shown in FIG. 19. In FIG. 19, the microcomputer (IC) first issues a flag (ABL) indicating AE lock.
Step (11160) determines whether or not F) is set.
0), and if the flag (AELF) is set, the photometric value is not updated and the process returns.

When the flag (8ELF) is not set, the terminal (CSIJI) is set to rH level and the photometry circuit (LM
) to output photometric data and perform serial updating (+11605.11610).

Through this communication, the brightness values (Bv+ to BV4) of the four photometric ranges shown in FIG. 11 are input. When communication is completed, the terminal (CSLM) is set to "L" level (11615
).

Then, in the next step (#1620), it is determined whether spot metering is selected, and if it is selected (
Fb+z=1), brightness value (Bvz
) is the spot value (Bvsp) (11660). When in multi-point mode (Fb l□=0), step (
111620) to (#1623), it is determined whether or not the flag (AFNF) indicating that focus detection is not possible is set. If it is not set, the process proceeds to step (#1660), where the small center Photometry range (L
Mz) is returned as the spot value (Bvsp).

When the flag (AFNF) is set, image magnification β is calculated from β = focal length/distance based on the distance information and focal length information input from the lens (111625).
At the same time, in the next step (111630), it is determined whether this image magnification β is greater than or equal to a predetermined value, and the size of the subject occupying the projection screen is determined. If it is greater than or equal to the predetermined value, the object is considered large and the step is taken (111640).
The brightness values (Bv, ), (Bvz) of each photometric range (LMI), (LM2) (LM3).

The average of (Bv+) is taken as the spot photometric value (Bvsp),
Return.

When the image magnification β is less than a predetermined value, the photometric range including the focus detection range used for focus detection is set to the photometric value of the main subject (B
vsp). In this embodiment, the range is determined based on which flag (AFIF to AF3F) indicating the focus detection range is set, and the range is determined based on which flag (AFIF to AF3F) is set.
F) is set, the photometry range (LMI)
brightness value (Bv1) of the photometry range (LM2) if the flag (AP2F) is set.
, when neither flag is set, that is, when the day focus amount of the third island (AE3) is selected, the brightness value (Bv3) of the photometry range (LM3) is set as the respective spot photometry value (Bvsp). (#1645~
11665).

After determining the spot photometry value in this way, the microcontroller (
μC) proceeds to step (+1450) in FIG. 6 and performs control regarding AE lock, which will be explained with reference to the flowchart shown in FIG. 20. Note that to release the AE lock, press the AE lock switch (SAE lock switch).
When L ) is pressed once, the AE continues while it is pressed.
The lock is applied and the AE lock switch (SAEL) is turned on again.
There is a mode in which the AE lock is released when > is pressed or the power self-hold is released (10 second hold mode), and a
There are modes in which the AE lock state is maintained only while the E-lock switch is pressed, and these modes are selected by the IC card. In Figure 20, a microcomputer (μC
) first determines which of the two modes it is in based on the data (MSbs) of the E"PR in step (11700), and when it is in the 10 second hold mode, it goes to step (#1705). Next, it is determined whether the AE lock switch (SAtt) is turned on, and if it is not turned on, a flag (AE 0NF) indicating that the AE lock switch has been operated and the flow from step (111705) onwards is executed. by resetting (
#1700) Return.

In step (111705), if the AE lock switch (SAEL) is turned on, the flag (A
E 0NF) is set or not in step (1
11720) and returns immediately if it is set. If not set, step (#
1720), it is determined whether the flag (AELF) indicating that the AE lock operation is working is set, and if the flag (AELF) is not set, the AE lock should be performed (when the operation is not performed). If the flag (AELF) is set, it is assumed that the AE lock was operated to be released while the AE lock was in operation, and the flag (AELF) is reset, and the process proceeds to step (111735). , AE lock switch (
SAEL ) is operated, a flag (AE 0NF) indicating that this flow has been executed is sent, and the process returns.

In step (11700), if the mode is not 10 seconds hold mode, in step (#1740)
It is determined whether the lock switch (S□L) is turned on, and if it is not turned on, the flag (AELF) is reset (111755). When it is turned on,
Please set the flag (AELF, )111745),
Reset and start the power supply holding timer (T1) (111750) and return. In this way, when the AE rotary switch (SAEL) is turned on, the power is maintained.

In FIG. 6, after controlling the AE lock, the microcomputer (μC) performs second data communication with the card in step (11455). This data communication is
To explain with reference to FIG.
0) Return without data communication. If the card is installed, set the terminal (CSC port) to rH, level 1330) and output data to the IC card (CD).
1335) indicates that the IC card is the input side. After that, in step (j1340), it is determined whether or not the IC card installed in the camera is a mode setting card, and if it is an IC card in data setting mode (
CKb, ~CKb&=0011), set the switch data that was sensed and memorized in step (19QO) in Figure 12 (11344), and perform serial communication (1
134B), switch information on I(l' card (CD)
Output to. Thereafter, the terminal (C3CD) is set to the "L" level (1350) and the process returns.

In the determination at step (11340), if it is not a mode setting card, that is, if it is a program card (C
Kb, ~cKbb=OL+), exposure calculation data and flash data that are data necessary for exposure calculation.

and lens data, perform serial communication, output these data to the IC card, and connect to the terminal (CSC).
D) is set to the "L" level, data communication is completed, and the process returns (1346 to 1350).

Note that the data for exposure calculation is the photometric value (Bvi).

(Bvav) There is data indicating film sensitivity (Sv) and whether it is a positive or negative film, lens data includes focal length data, open F value (71vo), maximum aperture value (Ava + ax), and flash data includes flash data. There is data indicating whether the flash is forced or automatic, data ON (guide number) indicating whether the flash is not installed (including power OFF), data indicating whether charging is complete, etc.

When the above-mentioned card data communication (I[) is completed in FIG. 6,
The microcomputer (μC) proceeds to step (1460) and performs exposure calculation here.

The flow of this control is shown and explained in FIGS. 22 to 26. First, the microcomputer (μC) performs step (12
000), it is determined from the input lens data whether the lens is attached, and if it is not attached, the photometry value (BVAM) of the photometry range (LM4) is determined as in the actual aperture metering.
) (Instead, the overall average photometric value may be used), add the film sensitivity (Sv) and the exposure compensation value (ΔEv), calculate the shutter speed, and return (#20
05). If a lens is attached, perform exposure calculation according to each exposure mode (#2010 to 112040)
.

Therefore, the exposure calculation for P mode is shown in Figures 23(a) to (C).
To explain it as shown in the figure, the microcomputer (μC) first
In step (12100) of Figure (a), the backlight condition is determined when the difference between the photometric value (BV□) of the photometric range (LM, ) and the spot photometric value (Bvsp) obtained in step (#445) is 28ν or more. Determine whether or not there is (11210
0). If it is 2Ev or more, it is determined in step (12105) whether or not the electronic flash device is ready to emit light (the main capacitor is fully charged), and if it is ready to emit light, the terminal (FLOK) is set to rH, level. Te(+12
110), enables flash photography and controls exposure value (Ev)
E from the photometric value (BVAN) of the photometric range (LM, ), etc.
v=Bv, , vo + 5v-1 + ΔEv to 10 (+12115) Here, 1 is subtracted to make the background look like an IE geobar to make it look like backlighting. In addition, I am trying to properly expose the main subject using a flash from an electronic flash device. The program then proceeds to a subroutine (12120) of program I that determines the aperture value (Av) and shutter speed (Tv), and returns. This is shown and explained in FIG. 23(b). The shutter speed control value (T
vc) is tuned to TV=7 (SS=1/125),
The aperture value (Av) is determined by subtracting 7 (shutter speed) from the exposure value (Ev), and this aperture value (^ν) is 7 (F=1
1) Determine whether or not the value is larger than that, and if larger, limit the control aperture value (Avc) to 7 and return (11221
5) If the aperture value (Av) is 7 or less, it is determined whether the calculated aperture value (^V) is smaller than the open aperture value (Avo), and if it is smaller, the control aperture value (Avo) is set and the aperture value is set smaller. If not, the calculated value (Av) is returned as the control aperture value (Avc) (112220 to cloud 2230).

FIG. 23(a) k: Return, if the electronic flash device (FL) is not ready to emit light in step (12105), the terminal (FLOK) is set to the "L" level.
125) In order to properly expose the main subject, find the control exposure (Ii (Ev) from the spot value (Bvsp) of the photometry range, etc. as Ev = Bvsp + Avo + Sv + ΔEv (112130), aperture value (Av), Subroutine of program ■ to find shutter speed (Tv) (
12135) and return.

This is shown and explained in Fig. 23 (C). First, in step (12250), the aperture value (Av) is set to Av = 5/8E.
It is determined whether this aperture value (AV) is larger than the maximum aperture value (Avmax) of the lens (12255), and if it is larger, the control aperture value (Avc
) as the maximum aperture value (Avmax) (l12260)
, proceed to step (112280). Step (122
55), the aperture value (AV) is the maximum aperture value (Ayn+
ax) or less, the aperture value (Av) is equal to the open aperture value (^V
If it is smaller, the control aperture value (Avc) is set as the open aperture value (Avo), and if it is not smaller, the calculated aperture value (Av) is set as the control aperture value (Avc) in step (12280). ) (12265~#22
75).

In step (12280), shutter speed (TV)
is obtained by subtracting the control aperture value (Avc) from the exposure value (Ev), and in the next step (112285) it is determined whether this is greater than the maximum shutter speed (Tvmax), and if it is, the control shutter speed is Limit the speed (Tvc) to (TvmaX) (12290), set the calculated shutter speed (Tv) as the control shutter speed (II2215), and return.

Figure 23(a) Return, step (112100)
If the difference between Bv□-Bvsp is less than 2, it is assumed that there is no backlight condition and the process proceeds to step (#2145), where the average photometric value (Bvl +
BV2 +BV3 +Bν4)/4 to exposure value (Il'
v) and detects whether the flash device is ready to emit light (#2150).

When the light emission preparation is complete, step (112155
) to determine whether or not the flash photography auto mode automatically determines the presence or absence of flash photography, and if it is in the auto mode, set the aperture value (AV) and shutter speed (Tv) using the program ■ above. (#2160), the shutter speed (Tv) is set to the camera shake warning speed (Tv=6.1/
60) (112165).

If the camera shake warning speed is lower than the camera shake warning speed, the process proceeds to step (12170) to perform flash photography at a low speed.Also, even if it is not in auto mode in step (112155), forced flash is determined to be performed and the process proceeds to step (12170). , the aperture value for flash photography in Program I (
Av) and shutter speed (TV) are determined and the terminal (FLO
Set k) to rH, level #2175) to enable flash photography.

However, in step (12150), if the preparation for emitting light is not completed, the process proceeds to step (112180) for shooting with constant light, determines the aperture value (AV) and shutter speed (Tv) using program H, and determines the aperture value (AV) and shutter speed (Tv) using the terminal (
FLOk) to “L” level (112185),
Return. Also in step (#2165), when the shutter speed (TV) is 7 or more (synchronized speed or more), the process similarly proceeds to step (112185) and returns.

Next, Fig. 24 shows a flowchart for determining the aperture value (Av) and shutter speed (TV) in A mode. First, it is determined whether the electronic flash device is ready to emit light. , if the light emission preparation is complete, set the control shutter speed (Tvc) to 7 (1/125), set the terminal (FLOk) to "H" level, and set the control aperture value (AvC).
) as the set aperture value (Av) (1123
00 to +12310 and 112345). If the flash preparation is not completed, the exposure value (Ev) is calculated from the average photometric value, and the value obtained by subtracting the set aperture value from this exposure value (Ev) is set as the shack speed (Tv) (#2315.#23
20). Then, in the next step (112325),
It is determined whether the shutter speed (Tv) is larger than the controllable maximum shutter speed (Tvmax), and if it is, the maximum shutter speed (TvlIlax) is set as the control shutter speed (Tvc), and if it is not, Control shutter speed (TV)
Tvc), proceed to step (#2340) - (#2325 to #23.35). Step (#2
In step 340), the terminal (FLOK) is set to the "L" level, and in the next step (+12345), the set aperture value (8v) is made to become the control aperture value (Avc).

Next, the control in S mode is shown in FIG. 25 and explained. First, at step (+12400), the exposure value (E
v) is calculated from the average photometric value, etc., and it is determined in step (#2405) whether or not the light emission preparation is complete. If the light emission preparation is complete, the terminal (FLOk) is set to "H" level (112410). .

Next, in step (112415) the shutter speed (T
v) is 7 or less, and if it is 7 or less, the set shutter speed (Tv) is set to the control shutter speed (Tv
c) If it exceeds 7, set the synchronization speed 7 as the control shutter speed (Tvc) and proceed to step (112430).

In step (+12430), the aperture value (^ν) is obtained by subtracting the control shutter speed (Tvc) from the determined exposure value (Ev), and this aperture value (Av) is calculated as the open aperture value (Av
+12435), and if it is smaller, the control aperture value (Avc) is changed to the open aperture value (Av
Return as o) (#2440). On the other hand, if the aperture value (Av) is not smaller than the open aperture value (Avo), it is determined whether it is larger than the maximum aperture value (^vmax).
vmax) as the control aperture value (AvC) +12450
), if it is not large, the calculated aperture value (8V) is set as the control aperture value (Avc) (12455) and the process returns.

In step (12405), if the light emission preparation is not completed, the set shutter speed (Tv) is controlled as the shutter speed (Tvc) (112460), and the terminal (FLOk) is set to "L" level (112465).
, the process advances to step (#2430) and the subsequent flow is executed.

Next, when the mode is M mode (see FIG. 26), it is determined in step (12500) whether or not the preparation for emitting light is completed;
When the process is not completed, the terminal (LFOk) is set to the "L" level, and when it is completed, the terminal (FLOk) is set to the "rH" level, and the process proceeds to step (#2515).
The preset aperture value (^ν) is returned as the control aperture value (AVC), and the shutter speed (Tv) is returned as the control shutter speed (Tvc) in the next step (112520).

Returning to FIG. 6, after completing the exposure calculation (#460), the microcomputer (μC) of the camera performs the third data communication with the IC card (CD) (11465). Fig. 5(C) shows a flowchart of this control. First, the terminal (CSCD) is set to the rH level, and the IC card (CD) is
) and performs serial communication (1360) and transfers the I to the IC card.
Notify that the C card is the output side (11360)
.

At this point, wait for a while (a365), perform serial communication and input data from the IC card (CD) (11370).
), and when this data communication is completed, the terminal (C5CD) is set to “L”.
' level and return.

In this flow, the data sent from the IC card (CD) is different when the IC card is a mode setting card and when it is a program card.
First, if it is a mode setting card, there is mode setting data (CKb, ~CKb2□ in Table 7) and display control data (CKbt) that determines whether or not to display.On the other hand, if it is a program card ■ Control shutter speed (C-Tvc), ■ Control aperture value (C-Avc)
) There is data for +■ presence/absence of flash light emission, ■ whether flash dimming light emission is set to full light emission (Ful1 light emission) or not, and ■ control by card is performed/not performed.

After completing this card data communication (III) in Figure 6,
The microcomputer (IC) executes the card control flow of step (11468). Based on the data you entered, this flow will
Figure 27 shows how to determine whether or not to control the camera using the microcomputer (μC), and how the camera operates when the card function is selected. Step (1126)
02) and the card function is selected (CDF
When NF = 1), proceed to step (12605). On the other hand, the card function is not selected (CDFNF
= 0), the function bits (Fb, ) and (pb+.) are each set to 0 in step (12677), and the dimming level change amount (FΔEν) is reset in (112680), and the process returns. When the card function is selected, it is next determined whether or not a program card is installed, and if a program card is installed (C
Kbl-CKb&=011) is the step (112610
), check whether the camera is controlled by an IC card or not.
The determination is made based on the data input from the card (CD). Then, if it is not a program card in step (12605) (Ckb, ~Ckb&≠011) or if the camera is not controlled by an IC card in step (12610) (Ckbz 3 = 0), step (11267
7) and proceeds to step (112680).

The camera is controlled by an IC card (Ckbzi=1
), the control aperture value (Avc) + control shutter speed (Tvc), presence/absence of Ful1 emission, presence/absence of flash emission, etc. are determined based on the data input from the IC card (112615~ +12645
). Next, use the input data to determine whether or not the flash light emission mode is in effect (112650), and set the terminal (FLOK) to the "L" level when it is not in the flash light emission mode (12685).
), proceed to step (I2680). When in flash mode, set the terminal (FLOK) to "H" level.
2655), it is detected whether the mode is Ful1 light emission (12660). Then, in the Full1 light emission mode, the terminal (Full) is set to r in step (112665).
Return to H level and set the terminal (Full) to L level when not in the Full1 light emission mode.I12
670), sets dimming level value change 1 (C-FΔEv) (112675), and returns.

In FIG. 6, after completing the routine for determining and controlling the camera using the IC card (+1468), the process moves to display control (11470).
It is shown and explained in the figure.

First, the microcomputer (μC) determines in step (+12700) whether or not the flag (CDFNF) indicating whether or not the card function is working is set. )～(It2
720) has passed once (CDIF)
It is determined in step (112710) whether or not is set. Here, if the flag (CDIF) is not set, set it in step (112715) to display the functions added by the card when the card function changes from not working to working. Set the flag (DISI'lF) for execution for a certain period of time in step (12720), and proceed to step (I2725).
). When the card function is not working (CDFNF
= 0), steps (I2710) to (+127
20) is passed once.
12705) and go to step (12725), or if this flag (CDIF) is sent, do nothing and go from step (I2710) to step (I2
725).

In step (12725), the above flag (DISPI
F) is set, and if it is set, it is determined in step (112727) whether the card type is a program card, and if it is a program card, the shutter speed display section As the data of rPROJ, r indicating that the card is working
Step (11272) the data showing the display of cARDJ
Create in step 8). The display in this case is shown in Figure 34(b).
It is as shown in .

If it is not a program card, that is, if it is a mode setting card or if the card is not loaded, step (1127
29) to check the functions of the card set in the camera.
"The display data is read from the PROM and display data as shown in FIG. 34(a) is created.The display data and display contents change depending on the set contents.

If the flag (DISPIP) is not set in step (12725), the next step (112730)
When determining whether or not to perform display control using a card, and performing display control using an IC card (CD) (CKb?"1)
) creates display data according to the mode setting data input from the IC card (I2735).

When there is no card display control signal from the IC card (Ckby=O) in step (112730), step (I
2736) and set the write flag to E”FROM (
WRTF) is set. When the write flag (WRTF) is set, that is, when the data setting mode using the card ends, the process proceeds to the mode setting subroutine (12737), further creates display data (II), and proceeds to step (I2745).

The above mode setting subroutine is shown and explained in Fig. 30. Here, it is determined whether or not all the modes currently set in the camera are in the newly set mode, and if not, the newly set mode is determined. I'm trying to move it to another mode. For example, if A mode is currently selected for exposure, but A mode is removed from the exposure mode selection by an IC card, it would be inappropriate to continue displaying and controlling A mode as before. is prevented.

Now, in the flow of Figure 30, the microcomputer (μC)
First, set the flag (CHGF) that is reset when there is a mode that can be changed (113200), and check whether the exposure mode that can be set has been changed. 113203), and if they are different (i.e., there has been a change), force the exposure mode to P.
Set the mode and the data (Fbo, pb,) to (0,
0) Nishiku #3205), step (113210)
Proceed to.

Next, in step (13210) it is determined whether there is an H/S mode, and if there is (CKbl = 1), the above flag (CHGF) is reset and the changed data (CD
b, ~cob2) as 11/S change history (0, 0, 0) and proceed to step (113230) (13220, 132
25).

If there is no H/S mode (CKbe=O), data (
Fb,, Fb,) without H/S of (0,0), (
+13215), proceed to step (113230).

In step (113230), it is determined whether there is a +/- mode, and if there is (CKbq=1), a flag (C
)IGF) is set or not in step (13).
#245), and if it is set, reset the flag #3250), and step (1132)
55) change the changed data (CDbo~CDb,) to 10/-
Change (001) and proceed to step (#3260).

If the flag (CHGF) is not set in step (13245), step (13250), (
113255) and go directly to step (
13260).

In step (113230), if there is no 10/- mode (CKb9=O), no correction is made, the functional data (Fb4.Fbs) is set to (0,0), and the corrected exposure amount Δ
Set Ev=0 and proceed to step (113260) (13
235, 113240).

In step (13260), it is determined whether or not there is an S/C mode, and if there is (CKb, 0=1), a flag (
CIIGF) is set or not in step (1
3270), and if it is set, reset it (13275), and then change the S/C in step (113280) to change the data (CDb, ~
CDbz) as (0, 1, 0) and the next step (t3
285).

If the flag (CHGF) is not set, steps (113275) and (113280) are skipped and the process directly proceeds to step (113285). In step (13260), if there is no S/C mode (CKb
, , = 0), step (
113265), the function data (pb:+) is set to (0), and the process proceeds to step (113285). Step (11
3285), it is determined whether the S/A mode is present,
In some cases (CKbl l = 1), step (1
3295) determines whether the flag (CHGF) is set, and if it is set, the flag (CHG
F) is reset (113300), and in the next step (113305) the changed data (
CDb6 to CDb2) are returned as (0,1°1). In the previous step (13295), the flag (CIIG
F) is not set, there is no changeable mode.113310), change data (CDb, ~C
Return Dbz) as (1,,0,O).

Also, if there is no S/A mode (CKb,,=O) in Stenbu (113285), return the function data (Fbz) as (0) to enable multi-point ranging mode (A mode) at step (+13290). do.

In FIG. 28, the above mode setting (112737)
is performed, followed by data creation I[(112742).

Data creation ■ is for creating display data for normal display not using a card (for example, Fig. 2 (U)), and if the card function is not working, as shown in Fig. 29. It looks like the characters have been deleted. Each step (
112728), (112779), (+12
735) and (112742), the process proceeds to step (112745) where the terminal (CS
DISP) to r)[j level, then step (#
2750) to perform serial communication (camera output side),
After the communication is completed, the terminal (C3DISP) is set to "L" level (group 2755).

Next, when the card function is activated, it is determined in step (112760) whether or not a flag (DISPIF) indicating a fixed time display is set, and if it is set, the CPU waits for 0.5 seconds (112765). During this time, the data created in steps (112728) and (112729) above are displayed.

Next, in step (12770), the flag (DISPIF) is set.
is reset and the process proceeds to step (12775). At the step (+12760), the flag ([1ISPIF)
is not set, step (+12765
) and (#2770) and go to step (#27
Proceed to 75). In step (112775), display control by the IC card must be canceled (data (CKby)).
Set to O.

Next, the control shutter speed (Tvc) is less than 6 (1/6
0) in step (l2780),
If it is less than 6, it is determined whether a mode for issuing a buzzer warning is selected (12785). If selected (MSbq~MSb+z -ON, 2o, 4H, 6
8, 8H, AMC++, E) l,) outputs a pulse of a predetermined frequency from the terminal (OBZ) for a certain period of time to issue a warning with a buzzer (112790), step (+1).
2792).

When the control shutter speed (Tvc) is 6 or more or the mode does not issue a buzzer warning (MSbq to MSb+
z -IH, 3n, 5N, 711.9)l, B1
1. Do, Fn, ), the process proceeds to step (12792) without issuing a buzzer warning.

In step (112792), the camera function indicated by the manual mode setting data is set to MSb of E”PROll.
~Flag indicating whether to write to MSb2 (WRTF)
is determined, and if it is set, it is written to E2FROM (12794). Then, the next step (11
2796), reset this flag (WRTF) and return. At step (l2792), the flag (WR
If TF) is not set, return immediately.

When the display control (11470) described above in FIG. Determine whether or not it is set, and if it is set, step (
l520) The process returns to a state where all interrupts are enabled. If the flag is not set, skip to step (11475) and press the release switch (
It is determined whether or not S2) is turned on, and if it is not turned on (IP,='HJ), the process returns.

When it is ON (Ih-' L J ), it is determined whether one-shot AF is used (11480). here,
In the case of one-shot AF, a flag indicating focus (AF
Step whether EF) is cented or not.

It is determined in step (11485), and if it is not set, the process returns via step (11520).

When the flag (AFEF) is set, or when continuous AF is used instead of one-shot AF, interruption to this flow is prohibited in step (11490), and exposure control is performed in the next step (1495). (described later), the film is wound one frame in step (11500) (this will also be described later), and the release switch (S
2) is ON or not in step (11505),
If it is ON (IF7-'L J), it is determined in step (l15.10) whether or not it is in continuous shooting mode, and if it is in quick shooting mode (Fb, + = 1), all interrupts are executed in step (+1515). , and proceed to the (SO) routine. If it is not the snapshot mode (pb3=0), return to step (11505) and press the release switch (S2).
Wait until it turns off, and when it turns off, step (+
1520), all interrupts are enabled and the process returns.

Next, the exposure control subroutine of step (11495) is shown in FIG. 31 and will be described. First step (l28
00), it is determined whether or not charging is completed based on the data manually input from the flash bag f (ST), and if charging is completed, the terminal (
C3ST) is set to rH'' level during (t2), indicating that the exposure mode is set. Then, the film sensitivity (Sν), exposure compensation amount (△Eν), and flash light emission amount compensation amount (FΔEν) from the IC card are calculated as the light control amount, and these are sent to the light control circuit (STC) as analog data. Output after /A conversion (112810).

In the next step (l2815), the control aperture value (Avc
), and after controlling the mirror up (112820), the control shutter speed (Tvc
) to control the shutter speed based on (11282
5) Furthermore, the Ful1 light emission signal terminal is set to "L" level (12830), and the process returns.

Here, the operation of the interface circuit when the flash is emitted is explained in the ninth section.
To explain based on Figure (b), during flash photography, the terminal (FLOK) is at the "H" level, and when the front curtain of the shutter completes travel, the X contact turns ON, and the AND circuit (
AND! ), the light emission start signal is sent to the electronic flash device (ST).
The electronic flash device (ST) inputs this and starts emitting light. When not in Ful1 flash mode,
"H" level is output to the AND circuit via the inverter (IN21), and when a pulse signal indicating the completion of dimming from the dimming circuit (STC) is input, the AND circuit (AN
D22) outputs this to the flash device via an OR circuit (OR, , ). In an electronic flash device (ST), this is input to stop flash emission. In the Frill flash mode, the AND circuit (AN[12□) is manually set to the "L" level, and the AND circuit (AND2□) becomes inactive, prohibiting the dimming signal from passing through, so the electronic flash is disabled. A signal indicating the stop of flash light emission is not output to the device (ST).

FIGS. 32(a) and (b) show the steps in FIG. 6 (
11500) is a flowchart of the control for winding one frame of the film shown in FIG. To explain this, in Fig. 32(a), the microcomputer (μC) outputs a motor hoisting signal to the motor control circuit (MD), and resets and starts the timer (T3) (12850.11
2855).

This timer is used to detect when the film has been wound to the final frame and is stretched. The microcomputer (IC) switches (S, O) to indicate that one frame has been wound in step ゛ (#2860).
Determine whether or not OIJ has occurred, and if not, check whether 2 seconds have passed in this state using the Ste/Knob (112865)
If 2 seconds have passed, the motor is controlled to stop (112870), and the film is determined to be tight, and the film is controlled to be tight (1128).
75), return. The above-mentioned tight subroutine is shown in FIG. 32(b) and will be explained.
It is determined in step (#2920) whether or not the option "Automatically rewind the film after the film is stretched" is selected, and if it is selected (MSb9~?1Sb2=OH~3-.
811"-Bn, here in hexadecimal), gives a motor reversal signal to the motor control circuit (gate D) and waits for the film detection switch (SFLH) to turn on (
#2930.1+2935). Next, switch (SFLH
) is turned on, it is determined whether or not to rewind all the film into the cartridge chamber, and when reeling in (E"PRO?l
of? lSb,~? lSb, □=2 N, 3,,6
,,7 M+ A,,, B,,.

If El(,F,), wait 1 second (112945)
, performs motor stop control (112955), and then returns.

Unless it is involved (E2FROM MSbq~M
Sblz= Oll, LH, 4u, 511.8H,
9H, Cn, Dn), wait 0.2 seconds, stop the motor, and return (#2950).

When the above step (li2920) does not auto-return (MSbw ~ MSb, □-4° ~ 7n, Ch,
F□) proceeds to step (#2925) and waits for the rewind switch (S, 1°) to be turned on, and if it is turned on, proceeds to step (#2930).

Returning to FIG. 32(a), when the 1-frame winding completion switch (Swo ON) is turned ON in step (#2860), the motor is stopped in step (112880), and then the next step ( 12885), it is determined whether or not the film number counter is a forward counting type, and if it is a forward counting type (MSb, to Sb+g=O++~7.)
, in step (112890), the count number (N1) of the counter indicating the number of film shots is incremented by 1, and if it is a backward calculation method (MSbq ~ MSb, □
), the count number (N1) indicating the number of remaining film sheets is decremented by 1, and each step (#29
Proceed to QO). In step (112900), this number of films (N,) is written to 5bIll in MSb+:i~ of E"PI?.

Next, when the back cover close detection switch (S, IC) or the rewind switch (Si, 1) is operated, the terminal (II
A pulse signal is input to IT2), and the microcomputer (μC) executes the interrupt (INTzl) shown in FIG. ), 1. , After that, in step (113005), it is detected whether or not the rewind switch (Srw) is turned on. When it is turned on, the rewinding operation is performed as shown in FIG. 32(b).
Rewind] routine is executed, interrupts are enabled, and the process returns (13010). When the rewind switch (S++w) is not turned on, the back cover close switch (SRC)
is turned ON, the process proceeds to step (#3015), and it is determined whether or not a film exists. If there is no film, therefore, the film detection switch (SFL, 4) is set to O.
In the case of FF, step (
Proceed to #3100). On the other hand, if a film is present (i.e., SFLM is ON), the terminal (CSO
Set X> to rH level and turn on the film sensitivity reading circuit (D
X) and performs serial communication with the film sensitivity data (Sν
) and the number of film sheets (N), and after completing the communication, set the terminal (C3 [lX) to "C++3 to set Lj level".
020-113030). Then, set the number (N1) to -2 (13035), and then the terminal (C5DISP
) to rH level, performs serial communication with the display control circuit (113045), outputs data that is not displayed except for data indicating the number of films (Nl), and when serial communication is finished, sets the terminal (CSDISP) to "L" level. (
113050). The value of the number of films (N1) is displayed using two 7 segments. Next, the microcomputer (μC) outputs a signal indicating motor winding to the winding control circuit (13055), waits for one frame to be wound (u3o60)), and when the one frame winding switch (SWO) is turned on, the number of films (N1 ) is added to determine whether or not it becomes 1. If it is not (■), the process returns to step (#3040). If it is 1, the process advances to step (113075) to stop the motor, and it is further determined in step (113080) whether or not the film counter is a forward counting type. If (Nl) is 1, and it is not a forward calculation formula, the number of film shots (N) read in step (+13090) is set as (Nl), and step (113
095). Then, in step (+13095), the above (N1) and the film sensitivity are written to a predetermined address of the E''PROM, and after the writing is completed, all interrupts are enabled (113100) and the process returns.

In the above, the microcomputer (μC) on the camera side of this embodiment
The operation of this camera has been explained using various flowcharts, and next, the control of the IC card installed in this camera will also be explained using flowcharts. Note that the mode setting card and program card will be explained separately.

The IC card (CD) has a built-in microcomputer (μCz) with a built-in E"FROM.

First, let's start with the mode setting card.
When D) is attached to the camera, power is supplied and as mentioned above, an interrupt is applied to the camera's microcomputer (μC), a clock (φ) is sent, and the microcomputer (μCZ) on the IC card side receives an interrupt. becomes drivable.

On the IC card side, the terminal (RE) is connected by attaching it to the camera.
A signal changing from "L" to rH level is input to the microcomputer (μCZ), and the microcomputer (μCZ) executes the flow shown in FIG. 35(a). In the figure, the microcontroller (μC2) first resets the flag output port (#CD5) and the RAM bits (CCKbQ to CCKbz) to (0, O, O), and then resets the E"PROM shown in Table 8. (CMSbo~CM
Sb+t) data is stored in the RAM bit (
CCKb.

~CCKb,) and waits for an interrupt (llcD1).
5).

The contents of this E"FROM data include the camera's E"FROM data.
”PROM data (MSbO~MSbi, MSb
Data similar to s to MSb, □) can be written.

A signal from the camera indicating a data communication request (C3BCK)
is sent, the microcomputer (μC2) of the IC card executes an interrupt (INT), which is shown and explained in FIG. 35(b).
cD50) to perform serial communication with the camera,
Clock (SC) for data communication sent from the camera
K), data from the camera is input, and it is determined which data communication (1, Il, III) it is (IICD55). If data communication is I, first I
Set the data that indicates to the camera what type (mode setting or program) the C card is (in this case, the mode setting card), and then set the data based on the power and the clock (SCK) sent from the camera. Output the data (ll
cD60), wait for an interrupt (llcD63). If the data communication is ■, the process proceeds from step (llcD70) to step (llcD75), and the data (in this case, key data) sent from the camera is sent to the clock (SC).
Input in synchronization with K). Based on this input data, the data seso 1- routine (lcD75) is executed, and an interrupt wait is entered (IIcD63).

This data set routine is shown in FIG. 35(C) and will be explained when the card data setting switch (Scns is ON).
It is determined in step (#CD100) whether or not the switch is ON or OFF, and step (#CD100) is performed depending on whether the switch is ON or OFF.
ICDIIO, 1lcD105), each control C
The process proceeds to step (llcD115) through the flow of 5cas 0N) (5cns OFF). The flow of this control is shown in FIGS. 35(d) and (e), and this control is shown in FIGS. 17 and 18 (5cns ON), (
5cos OFF) flow and comparison step (111
500) and step (#1550) for determining the mode setting card (this is unnecessary on the card side); the other steps are the same, so the explanation will be omitted.

Note that the flag has a C at the beginning to distinguish it from the camera-side flag, and its function is the same as that of the camera-side flag without the C.

Returning to FIG. 35(C), in step (#CD115), it is determined whether or not the set flag (C3ETF) is set, and if it is not set, (5eDs
ON) flow once and the flag (5cos OFF) that is set when the flow has not passed through
CCDSF) is set or not in step (l
lcD120).

In this embodiment, the card data setting switch (ScDs
) is OFF to enter the change mode, and when the flag (C3ETF) is not set in step (IICD115), it indicates that the settings have not been changed yet, but have been changed.

When the flag (CCIISF) is set,
Please set the display control flag (DISPCF).1lcD
125), and if the flag (CCDSF) is not set, it is reset (IICD130) and returns.

By setting and resetting this display control flag (DISPCF), it is determined whether or not the camera side display will be the display in the data setting mode [step (1127 in Fig. 28)].
30) ). In step (lcD115), the flag (C
5ETF) is set, the switch (S
St)+(Srus)l(SEXP)+(Satt
), (Sst ON), (SFLINON), (SFLINON),
(Stxr ON), (SAiLON), (Su
p ON), (Sdn ON) and step (
Proceed to #CDI25) (#CD135~IIcDI90
).

The flow according to the operation of these switches will be explained below.

First, the change mode is selected by the change data selection switch (SsE), as shown in FIG. At this time, the above bit (CC
kbo~CCkbz) also change and return (#CD
300).

The mode can be selected by the change data valid/invalid switch (S□,), as shown in Figure 35 (9), the mode corresponding to the selected position of the change mode is set (changeable, bit = 1), mode reset (no change, bit - 0); if not, set each and return. In terms of signals, set (CCkb3 to CCkb6) (-1),
It means to reset (=0). Needless to say, in step (llcD410), the S/^ mode is set.

Next, the selection of selectable exposure modes by the exposure mode combination selection switch (Sixr) advances by one each time this switch (SEXP) is operated, as shown in FIG. (CCkby~CCk
b. Change the state of ).

When selecting the AE lock mode by operating the AE lock switch (SAIL), each time the switch (SAEL) is operated, the ON period A of the switch (SAEL) is
The bit (CCkb+4) is changed so that the E-lock or the AE-lock during the camera's power hold period (10 seconds hold) alternates.

Up switch (SLIP>, Down switch (Sd)
Regarding the selection of the mode shown in Table 2 by each operation of n), beep) as shown in Figure 35 (j) and (9).
When the up switch (Sup) is operated from the current position of (CCkbl.~CCkb1:+), it counts up, and when the down switch (Sdn) is operated, it counts down.
Ckb,. ~CCkb11).

In FIG. 35(C), the card data setting switch (Scns) is turned on in step (IIcDloo), and the card data setting switch (Scns) is sequentially advanced (ICDIIO) -' (l
lcD115) −(llcD120) →(ItCD
125), the card display control signal from the mode setting card (on the card side, when DISPCF is 1,
This signal is output), the camera uses the 28th
Proceeding from step (12730) to step (112735) in the figure, displays the functions that can be set by the card and that the camera currently has [for example, in Figure 38 (b).
) is changed to the display showing that the image is being photographed [Fig. 38(a)].

When the change data selection switch (Sst) is pressed - times,
The cursor (Δ) comes to the position of HI3 (however, since it is not currently set, there is no display of 11/S) [38th
Figure (C)]. In this state, when the changed data valid/invalid switch (SFIIN) is pressed once, HI3 is displayed as shown in FIG. 38(d) to add the function of HI3.

Next, a similar operation is performed, namely the change data selection switch (SS
E), change data enable/disable switch (SFUN)
) are pressed once in sequence, this time +7
- Since the function is deleted, the display is as shown in FIG. 38(e).

Next, the exposure mode combination selection switch (SEX?)
When pressed repeatedly, PAMS changes to PAM as shown in Figure 38).
The display changes to . AE Ronox Inch (SAEL)
) is pressed - times, PUSHSP is displayed at the 38th
The display changes to Ho1d as shown in the figure (□□□).

Here, when the up switch (Sup) is pressed - times,
2 changes to 1 as shown in the 38th episode).

Next, when the card data setting switch (Scns) is turned on and turned off, the card display control signal is no longer output from the card, and the camera changes from (12730) to (
#2736), and at this time, the flag (WRTF) indicating writing to E2FROM is set [i.e., the switch (Scos) is turned from ON to OFF at -
(However, before turning on, data setting mode by card)
], as a result, the subsequent display (assuming all the above mode change operations have been performed) will be the third one.
The display shifts from the display in FIG. 8(h) to the display in FIG. 38(i).

Returning to FIG. 35(b), if it is determined in step (IICI180) that the data communication is (III), serial communication (in this case, the card side outputs) is performed in step (#CD85), and the IC Card function data (C
Ckb0 to CCkb+4) and CDl5PCI') signals are given to the camera side. Then, it is determined in step (llcD90) whether or not the write flag (CWRTF) to the E2PROM is set. If it is not set, the process proceeds to step (llcD63) and waits for an interrupt. If it is set, the function is Data (CCkba~
CCkb,) of E2PROM (CMSba~CMSb
, write to the bit according to the data content among the bits of l) (#CD92), and write the write flag to the E2PROM (
CWRTF) (#CD95), proceeds to Stella '17'(#CD63), and waits for an interrupt.

In the step (IICD80), data communication (
[If not [I], assume it is a sleeve signal)I
It becomes ALT state.

Next, the case of a program card will be explained.

In this embodiment, the program card is a sports program that is effective when a user wants to take a picture of a sports scene being played.

Now, when the IC card is inserted into the camera, a signal that changes from the "L" level to the rH level is input to the RESET terminal of the microcontroller (μC2) on the card side, and the microcontroller (μC2) of the IC card inputs the signal as shown in Figure 36. Execute the [reset] flow shown in (a), reset the flag and port in step (ol), and wait for an interrupt (Q2). When the C3BCK signal is input from the camera, an interrupt occurs, as shown in Figure 36 (b). Execute the flow shown in (INT). IC card microcomputer (μCz) L! Data communication is performed based on the clock (to SC) sent from the camera (Q
50). The data at this time is data used by the camera to inform the card side of the type of communication.
The card's microcomputer (μC2) manually reads this data and determines the content of the communication (Q51). If data communication is I, data indicating the type of card (in this case, it is a program card), data indicating that the AF mode is continuous, and the metering zone is multi-point are serially communicated to the camera side. It outputs in (Q52) and proceeds to step (Q56) to wait for an interrupt.

Since this Program Car F is designed for sports scenes, it uses Continuous AF, which is always in focus to handle rapidly moving subjects, and a multimeter metering zone, which has a wide metering range for the same reason. Since the points and distance measurement zones focus on a moving subject, it is desirable to have a wide range of multiple points, but they are made switchable in case the photographer wishes to sharply focus only on the main subject.

Next, before explaining an example of a specific flowchart of exposure calculation, an overview of the control of this card will be explained.

◇Cards for outdoor sports and sports days◇ [Contents] You can take pictures of moving subjects in relatively bright places with a high-speed shutter that prevents camera shake.

〔control〕

The control details for outdoor sports and athletic meet cards are shown in the program diagram of FIG. 37. This control is performed as follows.

(a) The aperture value Av of the lens is calculated as follows.

When Ev<21, 8v= (3/4) ・Ev 23
/4When Eν≧21, Aν= (1/2)・Ec1/
2, that is, when Ev<21, the aperture is slightly opened to increase the shutter speed (Tv). Therefore, AV=
(3/4)·Ev −23/4 is calculated.

When Ev≧21, the shutter speed (Tv) is already considered to be sufficiently high, so (Av), (Tv)
In order to change both smoothly, Av= (1/
2) Calculate Ev1/2.

Next, compare the open aperture value ^vo with the object. If the calculated value is smaller than 8v0, the aperture value cannot be set to that value, so it is corrected to Avo.

Next, the shank velocity (Tv) is determined using the following formula.

＾When V≧AvoO, Tv = Ev −Av8 <
When AvoO, Tv = Ev - Av.

(b) If the film is a negative film, (c) the shutter speed (Tv) is corrected to increase the shutter speed (Tv).

Negative film has a wide latitude, so use this to underexpose by about IEv and maintain a high shutter speed.

Reversal film (positive) has a narrow latitude, so no correction is applied.

(c) Others The above control is performed when a lens with a focal length of 701nff1 or more is attached. The reason for this is that the distance to the subject is relatively long in sports photography, and it is thought that the subject cannot be photographed adequately without a telephoto lens.If a telephoto lens is not used, the image magnification of the subject is small. Since there is little chance of camera shake caused by moving the lens to follow the subject, no control is performed.

In this control, the flash is forced off and the flash does not fire automatically. The reason for this is that this program card targets LE + shadows in relatively bright places, and the distance to the subject is relatively long, so even if the flash is activated, it will not have much of an effect. It is from.

Further, in this control, if the flash switch is forcibly turned on, no control is performed. The reason is that this control does not cause the flash to emit light for the reason described above, so if the control is performed when the flash is forced ON, it will go against the photographer's will to cause the flash to emit light.

Next, a flowchart of the exposure calculation of the program card is shown in FIG. 36(C) and will be explained. In the same figure,
The microcomputer of the program card first determines the presence or absence of a lens based on the data input in step (3). Here, if the lens is not attached to the camera body, lens data such as the maximum aperture value (Avo) will not be sent to the IC card. Therefore, exposure calculation cannot be performed, so
Proceed to step @ and leave exposure control to the camera body.

If the lens is attached, proceed to step (2) and check the focal length of the lens from the input data. For lenses with a φ1 point distance of less than 70 mm, card control is not performed for the reason described above, so in this case too, jump to step @ and leave exposure control to the camera body. focal length is 70
If it is M or more, check the state of the forced flash light switch based on the data input in step (2). When the flash forced light emission switch is ON, the card does not perform control for the reason described above, and therefore jumps to step [phase].

On the other hand, if the switch is OFF, proceed to the next step ■
The exposure value (Ev) is calculated by the sum of the spot brightness (Bvs) and the film sensitivity (Sv) of the input data. Then, the content of the control is changed depending on the value of the exposure value (Ev). For the reasons mentioned above, when Ev<21, ^v=
(3/4) - Find (Av) in step 0 from the equation Ev-23/4. When Ev≧21, Av= (1/2
) - Find (Av) in step ① from the equation Ev-1/2.

(Av) calculated in step ■ and the minimum aperture value of the lens (
Avmax) is compared in the next step (2). When Av≧Avmax, the lens cannot be stopped down any further, so in step (2), the body control aperture value Avc is set to Avmax.

On the other hand, when ^ν< Avmax, Av
Let c = object. In this way, the aperture value A for body control
After determining vc, the shutter speed (T
v) is calculated based on the formula of νC to Tv−Ec.

In the next step ■, this shutter speed (Tv)
and the camera's maximum shutter speed (Tvmax). Here, when Tv≧Tvn+ax, proceed to step @ and set the shutter speed for body control (TvC).
Let be (Tvmax). When Tv<TvmaxO, Tvc=Tν is set in step @.

If Ev<21 in step (2) above, calculate (Av) using the formula shown in step (2), and then proceed to step (2).

In step (2), (Av) calculated in step [phase] is compared with the open aperture Avo. Here, Av>Avo
In this case, the process goes to step (2) to compare (Av) and (Avmax). When Av≦Aν0, the aperture value of the lens cannot be opened any further, so the process proceeds to step [phase] and the aperture value for body control (Avc) is set to (Avo). Then, in step @, the shutter speed (Tv) is calculated from the formula Tv=Ev-Avc.

For the reason mentioned above, if the film is a negative film, the shutter speed (Tv) must be corrected, so the type of film is determined in step (2). As a result, in the case of a reversal (positive) film, the process proceeds to step @ in order to prevent the shutter speed (Tv) from becoming extremely slow.

On the other hand, in the case of a negative film, the process proceeds to step (2), where it is determined whether the shutter speed (Tv) is smaller than 9 or not. When TV≧9, the body control shutter speed (Tvc) is set to (Tv) in step [phase].

When Tv<9, the process proceeds to step [phase] and further determines whether the shutter speed (Tv) is 8 or more.

Here, when Tv≧8, Tvc=9 and step [phase]), and when Tv<8, step 0 and Tv=Tν
Make a +1 correction and go to the next step @. In step 0, a comparison is made to limit the maximum value of (Tv) to Tv=-5 (30 seconds) in order to prevent the shutter speed (Tv) from becoming extremely slow.

Here, when Tv<5, Tvc--5 is set (step @), and when Tv≧5, Tvc = Tv (step [phase]).

For the reason mentioned above, flash control is not performed, so in step [phase], a bit is set to turn off the flash. After that, the process proceeds to step (3), the camera control uses the value calculated by the program card, and returns.

The flow of these exposure calculations can be summarized in Figure 36 (G))
Return to the flow and wait for an interrupt.

At this point, there is an interrupt from the camera side, and at this time, if there is data communication (■), the calculated aperture value (CAvc), shutter speed (CTvc) data, and whether or not to control the camera using the card, and whether or not to force Full 1 emission (Fb .

=0) 1 Forbidden forced flash (Fb16=O), flash control correction 1
Data regarding the reset of (CFΔEν) is created, serial communication is performed, and the data is output to the camera side. Note that the microcomputer (μCZ) of the card stops during communications other than those mentioned above.

Here, the switches, their functions, various data, etc. that appear in the explanation of this embodiment are shown in Tables 1 to 10 below.

■Table Table 1 (Continued) Table Function Data (Fb, ) AM Table Mode Setting Data (MSbn) E2PROM Table Card Type Data (CKbn) AM Table Change Data (CDbll) (RAM) Table Card Communication output data (CSb, ) Table setting data (CMSbn) E2FROMIC card,
Functional Data Table (Continued) In the table above, the entire control system for camera functions using an IC card has been described, but the selection of the exposure mode in this embodiment is particularly explained in Figures 13 and 35.
) is shown in the flowchart.

That is, the combination of exposure modes can be selected by first operating the exposure mode combination selection switch (Stxp) with the IC card attached to the camera body.

The data of this selected combination is transferred from the IC card side to the camera body side in data communication (Fig. 35).
b) Written to E"Pr10M of the L camera body. Therefore, even if the IC card is removed from the camera body after this, the selected exposure mode combination will be saved in the camera body. Of course, the combination of exposure modes will be saved in the IC card itself. The combination is also stored.

Next, by operating the up switch (Sup+ or 5upz) or the down switch (Sdn+ or 5dnz), a desired exposure mode is selected from the selected exposure mode combinations as shown in FIG. In this case, exposure modes that are not included in the selected combination will be skipped.

According to the present invention, exposure mode selection is performed by selecting a combination of a plurality of exposure modes by the first selection means and then selecting a desired exposure mode from the combination by the second selection means. operations will be performed. Therefore, since unnecessary exposure modes are excluded in advance by selecting the first selection means, there is no need to perform unnecessary operations when selecting the selection operation using the second selection means, which improves operational efficiency when shooting images. It is convenient and easy to use.

In this case, if the configuration is such that the selection by the first selection means can be made with an accessory such as an IC card attached, a part of the function can be shared with the accessory, so the camera body can reduce the burden on Moreover, in this case, if a storage means is provided so that the selected exposure mode combination is saved even when the accessories are removed from the camera body, the camera body can be used without accessories such as accessories. It is convenient to be able to perform selection operations using the second selection means.

[Brief explanation of the drawing]

The figures are all related to embodiments of the present invention, and Fig. 1 is a circuit diagram of the entire camera, Fig. 2 is a diagram showing the display form on the display section, and Fig. 3 is a diagram showing the state of display when the battery is installed. 3 is a flowchart showing a camera reset routine. FIG. 4 is a flowchart showing the initial set routine in FIG. FIG. 5 is a flowchart of data communication performed between the camera and the IC card attached thereto. Fig. 6 is a flowchart showing a routine for photometry, AF, display, exposure control, etc. Fig. 7 is a flowchart showing a routine for manual lens data processing;
FIG. 8 is also a flowchart of flash data input. FIG. 9(a) is a circuit diagram of an electronic flash device,
FIG. 9(b) is a circuit diagram of the interface. Fig. 10(a) is a flowchart of the AF routine, Fig. 10(b) is a flowchart of day focus amount determination therein, and Fig. 11 is a diagram showing the distance measurement range and photometry range in the shadow screen. be. FIG. 12 is a flowchart showing the setting routine of the keys provided on the camera, and FIGS. 13, 14(a), 14(b),
Figures 5 and 16. FIGS. 17 and 18 are flowcharts showing specific setting routines for the various keys. FIG. 19 is a flowchart showing the routine for creating photometric data No. 20
The figure is a flowchart of AE lock. Figure 21 (a
), FIG. 21, etc.) are flowcharts for setting the aperture and shutter speed. Fig. 22 is a flowchart of exposure calculation, and Fig. 23 (a), Fig. 23 Φ), Fig. 23 (
C), FIG. 24, FIG. 25, and FIG. 26 are flowcharts of each mode therein. Figure 27 shows an IC card (
In particular, it is a flowchart of control by a program card. FIG. 28 is a flowchart showing the display routine, and FIG. 29 is a diagram showing a display example in one step of the flowchart. Figure 30 is a flowchart for mode setting, and Figure 31 is a flowchart for exposure control.
) and FIG. 32(b) are flowcharts related to winding one frame of film, and FIG. 33 is a flowchart showing an interrupt routine related to closing the back cover. FIG. 34 is a diagram showing an example of a display when a card is inserted. FIG. 35 is a flowchart showing various routines for the IC card, FIG. 36 is a flowchart especially for the program card, and FIG. 37 is a program diagram for the program card. FIG. 38 is a diagram showing a display example regarding the flowchart in FIG. 35. (CD)-IC card. (Stxp) - Single exposure mode combination selection switch (S
L191) (Supz) --- Up switch. (Sdn+) (Sdnt)・−・−Down switch.

Claims (3)

[Claims] (1) In a camera system in which at least three exposure modes can be selected, a first selection means for selecting a combination of the plurality of exposure modes, and a first selection means for selecting a combination of the plurality of exposure modes;
A camera system comprising: second selection means for selecting one of two exposure modes. (2) The camera system includes an accessory that is detachably attached to the camera body, and the first selection means is capable of performing a selection operation when the accessory is attached to the camera body. Camera system described in. (3) A second aspect of the present invention characterized in that the camera system is provided with a storage means for retaining the combination of exposure modes already selected by the first selection means even after the accessory is removed from the camera body. Camera system described in.