JPH04199112A - Camera provided with automatic learning function - Google Patents

Abstract

PURPOSE:To prevent the learning of an extreme photographing condition by switching a mode to a learning stop mode by a mode switching means so that the learning is not performed. CONSTITUTION:This camera is provided with an always-open-system mode switch S3 for performing the turn-on/turn-off/reset of a learning mode, and it has not only a function for stopping the learning or erasing the content of the learning by this switch S3 but also a function that an automatic learning mode and the learning stop mode are automatically switched based on the information by an auto depth card and a portrait card as well as a sport card. Namely, the auto depth card and the portrait card have information expressing a range which should be learned, so that the learning about zooming is automatically stopped in a range other than a specified learning range based on the information. Thus, the learning is not performed in the case that photographing is so special as to perform photographing by using the auto depth card or the portrait card.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera having a learning function, and more particularly, to an automatic learning function for operations such as zooming for setting shooting conditions.

Previously, it was possible to automatically set shooting conditions (shot/souter speed, aperture value, focal length, etc.) based on predetermined control data such as program line data and perform shooting. Although cameras have been commercialized (X), depending on the individuality of the photographer or the actual specific shooting scene, the shooting conditions may not be what the photographer desires. Therefore, it is necessary to set shooting conditions according to the following conditions, and the advantages of automation are lost.

In response, cameras have been proposed that have a learning function regarding shooting conditions. For example, in Japanese Patent Application Laid-Open No. 1-300237, there is provided a setting means for arbitrarily setting photographing conditions, a storage means for inputting and storing information on the set photographing conditions, and a storage means for storing information on the set photographing conditions in response to a release signal. control means for performing a photographing operation based on the information on the photographing conditions set, and each time information on the new photographing conditions is input from the setting means, the information on the stored photographing conditions and the newly set photographing operation are controlled. A camera has been disclosed that has a learning function that updates information on photographing conditions stored based on the conditions.

According to such a camera, the above-mentioned learning automatically sets the shooting conditions according to the shooting tendency of the photographer, reducing the need for manual setting of the shooting conditions.

However, depending on the situation, you may not want to perform the above learning, such as when shooting under extreme shooting conditions (shutter speed, aperture value, focal length, etc.) in special shooting situations. be. Furthermore, the photographer may accidentally learn photographing conditions that were not intended by the photographer. In such a case, due to this learning, manual operations are often required for subsequent shooting, making the camera even more difficult to use.

Therefore, in order to solve such problems, the present invention aims to provide a camera with an automatic learning function that can stop the learning function or erase the learning content as necessary.

In order to achieve the above-mentioned object, in the present invention, as stated in the first claim, an operation variable representing the content of a predetermined operation for setting photographing conditions is set to a predetermined value. In a camera that can be automatically controlled based on control data of a camera, when the predetermined operation is manually performed, a manipulated variable change amount detection means detects an amount of change in the manipulated variable due to the operation; rewritable storage means for storing data; and changing the control content of the manipulated variable by rewriting the control data stored by the storage means based on the amount of change detected by the manipulated variable change amount detection means. mode switching means for switching the mode between an automatic learning mode and a learning stop mode; and when the automatic learning mode is set by the mode switching means, the changing means changes the control content of the manipulated variable. When the change is automatically performed and the learning stop mode is set by the mode switching means, the changing means operates so as to maintain the control content of the manipulated variable constant without rewriting the control data. The configuration includes a learning control means for controlling , and .

Further, as described in the second claim, in a camera that can automatically control operation variables representing the content of a predetermined operation for setting photographing conditions based on predetermined control data, When the predetermined operation is performed manually, a manipulated variable change amount detection means detects the amount of change in the manipulated variable due to the operation; a rewritable storage means for storing the control data; and a manipulated variable change amount detection means. a changing means for changing the control content of the manipulated variable by rewriting the control data stored by the storage means based on the amount of change detected by the means; and a changing means for changing the control content of the manipulated variable by rewriting the control data stored by the storage means; The present invention also proposes a configuration including a learning reset means for erasing learned content regarding the predetermined operation by returning to an initial state.

As described in a third claim, in the camera according to the first claim, the predetermined operation is learned by returning the control data to an initial state in which the rewriting is not performed at all. A configuration is also proposed that further includes a learning reset means for erasing the content that has been written.

The camera according to any one of claims 1 to 3 further includes a release means that starts a release operation when the release switch is turned on, and the changing means is configured to switch the release means so that the shutter is turned on. Then, the control content of the manipulated variable can be changed by rewriting the control data based on the amount of change detected by the manipulated variable change amount detection means.

Further, the mode switching means may be configured to switch the mode by manually operating a predetermined operating member, as described in the fifth claim, but the mode switching means may be configured to switch the mode by manually operating a predetermined operating member. As shown in the figure, it is possible to configure the camera to switch modes based on switching information from sources other than the camera body.

For example, as described in claim 7, in the case of a camera that can be equipped with an IC card having a function of controlling photographing conditions, the switching information may be provided from the IC card. can.

Negative use - According to the camera according to the first claim, the operating variables are automatically controlled and the shooting conditions are set based on predetermined control data at the time of shooting. When a condition (value of a manipulated variable) is judged to be inappropriate and a predetermined operation is performed manually, the amount of change in the manipulated variable due to the manual operation is detected, and in automatic learning mode, the amount of change is Based on this, the control data is rewritten and the control contents of the manipulated variables are changed. That is, in the automatic learning mode, learning about the photographing conditions (predetermined operations) is automatically performed. On the other hand, when in the learning stop mode, the control data is not rewritten, the control contents of the manipulated variables are held constant, and the learning power at (X) stops under the shooting conditions (predetermined operations).

According to the camera according to the second aspect, the operating variables are automatically controlled and the imaging conditions are set based on predetermined control data at the time of imaging; When a predetermined operation is performed manually after determining that the value (value) is inappropriate, the amount of change in the manipulated variable due to the manual operation is detected, and the control data is rewritten based on the amount of change to control the manipulated variable. Contents are changed. In other words, learning is automatically performed under the shooting conditions (predetermined operations), and when setting the shooting conditions after learning, the manipulated variables are controlled based on control data that reflects the learning results. be done. However, the content learned in this way can be deleted by the learning reset means, and after the learning content is deleted, the shooting conditions are set based on the control data in the initial state that has not been rewritten at all by learning. Manipulated variables are controlled.

According to the camera according to the third aspect, like the camera according to the first aspect, it has an automatic learning mode and a learning stop mode, and the learned content in the automatic learning mode is erased by the learning reset means. be able to. In setting the photographing conditions after the learning content is deleted, the manipulated variables are controlled based on the control data in the initial state that has not been rewritten by learning at all.

According to the camera described in the fourth wI requirement, when the release switch is turned on, the control data is rewritten based on the amount of change in the manipulated variable due to manual operation, and the control content of the manipulated variable is changed. That is, when the release switch is turned on, an operation to change the control details is started, and learning of the photographing conditions (predetermined operations) is automatically performed.

However, the content learned in this way can be erased by a learning reset means, or/and by setting the learning stop mode, even if the release switch is turned on, the learning regarding shooting conditions (predetermined operations) can be continued. You can prevent this from happening.

According to the camera according to the fifth aspect, mode switching between the automatic learning mode and the learning stop mode is performed by manually operating a predetermined operating member. Further, according to the camera according to the sixth aspect, this mode switching is performed based on information provided from other than the camera body, that is, from an accessory or the like. For example, according to the camera according to the seventh aspect, the mode is switched based on information given from an IC card attached to the camera.

(Space below) [Table of contents of examples] [1] Hardware configuration [1, 1,] External configuration [1, 1, 1] Names and functions of each part in the camera body [1, 1, 2] Names and functions of each part in the interchangeable lens [1, 2] Circuit configuration [1, 2, 1] In-body circuit configuration [1,, 2, 2] In-lens circuit configuration [2] Software configuration [2, 1] Software for the microcomputer in the body [2, 2]
Software for the microcomputer in the lens [2, 3] Software for the microcomputer in the card [2, 3, 1] Sports card [2, 3, 2] Auto depth card [2, 3, 3 Portrait card [3] Summary [Implementation] Contents of Example] Hereinafter, as an example of the present invention, a single-lens reflex camera system equipped with an interchangeable lens whose focal length can be changed by a motor will be described.

Figure 1 shows a schematic block diagram of this system.

As shown in this figure, the camera body side has a distance measuring section (2).
By inputting data from the camera into the body control unit (1) to calculate the lens drive amount for focusing, and energizing the motor (Ml) in the focus adjustment lens group drive control unit (3), A function that automatically performs focusing by driving the focus adjustment lens group (hereinafter referred to as "AF lens") (LF), a body data output section (4) and a lens data input section (5), enables communication between the lens side and It has the function of communicating and operating the lens under the control of the body. Note that the body control section (1) can have additional functions by attaching an IC card, which will be described later, to the body. That is, various IC cards corresponding to shooting genres such as sports and portraits are prepared, and when the IC card is installed, the body control section (1) controls the body data output section (31) and the card data input section. According to section (32),
Can communicate with the card side. The card control section (35) then communicates with the body side through the body data input section (33) and the card data output section (34), and selects the aperture value, shutter speed, and zoom suitable for the shooting genre that the IC card is in charge of. Calculates the focal length of the lens and transmits it to the body. Therefore, the body control section (1)
By using this control information, it is possible to control the camera suitable for each shooting genre.

On the other hand, on the lens side, a zoom operation ring operation detection means (10)
When an operation is detected, the zoom lens group drive control unit (7) energizes the motor (M3) to drive the zoom lens group (LA) and perform zooming (hereinafter referred to as "power zoom"). It has a function to output lens data to the body by communicating with the body through the body data input section (8) and lens data output section (9), and a function to operate according to the data from the body. are doing.

[1] Hardware configuration [1,1] External configuration Next, the external configuration of the body and lens will be explained.

Figure gJ2 (a) shows a camera body (BD
), Figure (b) shows the camera body (BD) viewed from the rear, Figure (C) is an enlarged view of the grip, and Figure (d) is an enlarged view of the grip. It shows the external configuration of an interchangeable lens (LE) that is replaceably attached to a camera body (BD). Hereinafter, the names and functions of each part will be briefly explained based on FIG. 2.

[1, 1, 1] Names and functions of each part on the camera body (11), set the main switches (sl, l) to 0N10FF
When this slider (11) is in the ON position, the camera body (BD) is in an operable state, and when in the OFF position, the camera body (BD) is in an inoperable state.

(12) is the release button, and when it is pressed to the first step, the shooting preparation switch (Sl), which will be described later, is turned on, and the metering and
Exposure calculation/A, F (autofocus) operations are started. In addition, by pressing the second step, the release switch (S2
) is turned on to start the exposure control operation.

(13) is an IC card insertion part, and by inserting an IC card with a built-in microcomputer into this insertion part (13), functions can be added to the camera body (BD).

(14) is a body display section that displays shutter speed, aperture value, IC card information, etc.

(15) is a mount lock bin. Interchangeable lens (L
E) is attached and in the mount lock state, a lens attachment switch (SLE), which will be described later, is turned off, and otherwise, the lens attachment switch (SLE) is turned on.

(16) is an AF coupler, which is rotationally driven based on the rotation of the AF motor within the camera body (BD).

(17) is the aperture lever and the camera body (BD
) Interchangeable lenses (LE) for the number of aperture stages determined by
This lever is used to narrow down the aperture.

(18) is a card key, and the function of the IC card is 0N.
Used for 10FF.

(19) is a learning mode key operated to perform ○N10FF/reset of the learning mode, which will be described later.

(20) is an LED which is a light emitting part, and (21) is a 5PC (silicon photocell) which is a light receiving part.These detect whether or not the photographer is looking into the viewfinder. (referred to as "eyepiece detection").

Reference numeral (24) is a slider for switching between single shooting mode and continuous shooting mode. When this slider (24) is at the S position, the mode is set to single shooting mode, and when it is at the position C, the mode is set to continuous shooting mode. Here, the single shooting mode is a normal mode in which shooting is performed only once by pressing the release button (12) to the second step, and the continuous shooting mode is the normal mode in which shooting is performed only once by pressing the release button (12) to the second step. In this mode, images are taken continuously at a predetermined frame rate while the camera is in use.

The outside (23) of the grip part in FIG. 2(c) is made of elastic rubber, and the inside is provided with conductive patterns (22a) and (22b) that are insulated from each other. A conductive rubber (not shown) is disposed between 22a) and 22b. Then, by pressing the outside (23) of the grip part, the conductor pattern (
22a) and (22b) are configured to be electrically connected via conductive rubber, and with this configuration, the grip portion functions as a switch (hereinafter referred to as "grip switch").

[1, 1, 2] Names and functions of each part in the interchangeable lens (LE) The names and functions of each part in the interchangeable lens (LE) will be explained.

(25) is the mount lock groove, (2G) is the AF coupler, and (27) is the aperture lever. When the interchangeable lens (LE) is attached to the camera body (BD), the mount lock bin (15) of the camera body (BD) engages with the mount lock groove (25), and the AF coupler (1) on the body side engages with the mount lock groove (25).
The convex part of 6) engages with the concave part of the AF coupler (26) on the lens side, and the rotation of the AF motor on the body side engages with the concave part of the AF coupler (16) on the lens side.
) (26) to the lens side, and the AF lens moves to perform focusing. Furthermore, the terminals on the lens side (Jl) to (J8) are the terminals on the body side (Jll) to (
J, @) is connected. Also, the aperture lever (17)
engages with the aperture lever (27) on the lens side, and the aperture lever (27) on the lens side follows and moves by the amount of movement of the aperture lever (17) on the body side, and the aperture aperture changes to the aperture lever (17) ( 27) is controlled to a value corresponding to the amount of movement.

(80) is a zoom operation ring, which is rotated to specify the direction and speed of power zoom. That is, this rotational operation drives the zoom motor (M3) in the interchangeable lens (LE), and the focal length can be changed in the telephoto direction or the wide direction.

[1,,2] Circuit configuration Next, the circuit configuration of the camera system will be explained.

[1, 2, 1] Configuration of in-body circuit $3 Figure is a circuit diagram of the in-body circuit built into the camera body (BD). First, the in-body circuit will be explained based on this diagram.

(μC1,) is an in-body microcomputer (hereinafter referred to as "in-body microcomputer") that controls the entire camera and performs various calculations.

(AFc engineering) is a light receiving circuit for focus detection, and C is used as an integral type optical sensor for focus detection that accumulates photocharge for a predetermined time.
A that processes the CD, CCD drive circuit, and CCD output.
The microcomputer (μC1) is connected to the microcomputer (μC1) via a data bus. This focus detection light receiving circuit (AFcT) provides information regarding the amount of defocus of the subject present in the distance measurement area.

(LM) is a photometric circuit installed in the viewfinder optical path, and the photometric value is A/D converted and the in-body microcontroller (μ
C1) as luminance information.

(DX) is a film sensitivity reading device that reads film sensitivity data provided in a film container and serially outputs it to the microcomputer (μC1) in the body.

(DISPC) is a display that inputs display data and display control signals from the microcomputer (μC1) in the body and causes the display section (DISP) (display section (14) in Figure 2) on the top of the camera body to perform a predetermined display. It is a circuit.

(CD) is an IC card inserted into the card insertion part (13), and has a built-in microcomputer (hereinafter referred to as "intra-card microcomputer") (μC3). This IC card (CD) will be explained in detail later.

(EPD) is an eye proximity detection circuit that performs eye proximity detection.

(LECT) is an in-lens circuit built into the interchangeable lens (LE) (hereinafter also simply referred to as "lens"), and supplies information specific to the interchangeable lens to the in-body microcomputer (μC1). This intra-lens circuit (LEct) will be explained in detail later.

(Ml) is the AF motor, and the AF coupler (16) (2
6) drives the AF lens in the interchangeable lens (LE).

(MDI) operates the AF motor (Ml) based on the focus detection information.
), and forward rotation, reverse rotation, and stop are controlled by commands from the microcomputer (μC1) in the body.

(ENC) is an encoder for monitoring the rotation of the AF motor (Hl), and outputs a pulse to the counter input terminal (CNT) of the in-body microcomputer (μC1) at every predetermined rotation angle. The in-body microcomputer (μC1) counts these pulses, detects the amount of extension from the infinity position to the current lens position, and calculates the shooting distance of the subject (subject distance) from this amount of extension (number of extension pulses CT). .

(TVCT) is a shutter control circuit that controls the shutter based on a control signal from an in-body microcomputer (μC1).

(AVCT) is an aperture control circuit that controls the aperture based on a control signal from an in-body microcomputer (μC1).

(M2) is a motor for winding and rewinding the film and charging the exposure control mechanism. Also, (MD
2) is a motor drive circuit that drives the motor (M2) based on commands from the in-body microcomputer (μC1).

Next, the configuration related to the power supply will be explained.

(El) is a battery that serves as a power source for the camera body (BD).

(Tri) is the first circuit that supplies power to part of the circuit described above.
This is a power supply transistor. (Tr2) is a second power supply transistor that supplies power for driving the zoom motor within the lens, and has an MO8 configuration.

(DD) is a DC/DC converter for stabilizing the voltage (Vno) supplied to the in-body microcomputer (μC1), and operates when the power supply control terminal (PWO) is at “High” level. (VDD) is the in-body microcontroller (μ
C1), circuit inside the lens (LECT), microcomputer inside the card (μC3), film sensitivity reading circuit (DX),
and the operating power supply voltage of the display control circuit (DISPC). (Vcc+) is a focus detection light receiving circuit (AFcm),
and the operating power supply voltage of the photometry circuit (LM), which is supplied from the power supply battery (El) via the power supply transistor (Tri) under the control of the signal output from the power supply control terminal (PWI). (VCC2) is the zoom motor inside the lens (
M3) is the operating power supply voltage, and the power supply control terminal (PN2)
The power is supplied from the power supply battery (El) via the power supply transistor (Tr2) under the control of the signal output from the power supply battery (El). (V
cce) are the eye proximity detection circuit (EPD), motor drive circuit (MDI), and shutter control circuit (TVct).
, the operating power supply voltage of the aperture control circuit (AVcv), and the motor drive circuit (MD2).The power supply battery (E)
directly from l).

(Dl) to (D3) are used to reduce power consumption by applying a voltage lower than the voltage (VDD) to the microcontroller (μC1) in the body when the DC/DC converter (DD) is not operating. It is a group of diodes. This low voltage is set to the lowest power supply voltage at which the in-body microcontroller (μC1) can operate, and when the DC/DC converter (DD) has stopped operating, the in-body microcontroller (μC1)
) is operational.

(GNDI) is the ground line of the low power consumption section,
The lens and the body are connected via terminals (JI7) (JT). It is necessary to use separate ground lines for the analog section and digital section within the body, but for convenience, only one line is shown in the drawing.

(GND2) is the ground line of the large power consumption section,
The lens and the body are connected via terminals (J, L+) (Je).

Next, the switches will be explained.

(Sep) is a normally open button switch for enabling/disabling the functions of the IC card (CD) when the IC card (CD) is installed. Turns on when pressed.

(SGR) is a grip switch that is turned on when the grip is gripped.

(Sl) is a photographing preparation switch that is turned on when the release button (12) is pressed down to the first step. This switch (
When SL) is turned on or the above-mentioned grip switch (SGR) is turned on, an interrupt signal is input to the interrupt terminal (INTI) of the microcomputer (μC1,) in the body, and photometry, distance measurement, and AF operation (automatic focusing operation) are performed. Preparatory operations necessary for photographing are performed.

(So) is a main switch that is turned ON when the slider (11) for enabling camera operation is in the ON position, and turned OFF when it is in the OFF position.

(PCI) is a pulse generator that outputs a "Low" level pulse every time the switch (S, ) changes from ON to OFF or from OFF to ON. This pulse generator (
The output of PCI) is input as an interrupt signal to the interrupt terminal (INT2) of the in-body microcomputer (μC1).

(S2) is a release switch that is turned on when the release button (12) is pressed down to the second step. This switch (
When S2) is turned ON, a photographing operation is performed.

(Ssc) sets the single shooting mode/continuous shooting mode using the slider (24
) is a switch that changes depending on the position of 0N (S
When the camera moves to 0FF (position C), it becomes single shooting mode, and when it moves to 0FF (position C), it becomes continuous shooting mode.

(S3) is a normally open learning mode switch for 0N10FF/resetting the learning mode.

(SHL) is a switch to detect whether the camera is in portrait or landscape orientation, and is ON when it is in landscape orientation.

It is OFF when it is vertical.

(SREl) is a battery attachment detection switch that turns OFF when the battery (El) is attached to the camera body (BD). When the battery (El) is installed and the battery installation detection switch (SREI) is turned OFF, the capacitor (C1) is charged via the resistor (R1) and the microcomputer (
The reset terminal (REI) of μC1) is = l Lo, IT
level changes to 'High' level.As a result, the in-body microcomputer (μC1) executes a reset routine to be described later.

(SRE3) is a card attachment detection switch that turns OFF when an IC card (CD) is attached. The IC card (CD) is inserted and the switch (SRE3) is turned OFF.
When F is reached, the reset terminal (RE3) of the microcomputer (μC3) in the card changes from II r, o, H level to °'High゛° level, and the microcomputer (μC3) in the card changes from the II r, o, H level to the °'High level.
μC3) is reset.

Next, a configuration for serial data communication will be explained.

Photometry circuit (LM), film sensitivity reading circuit (DX)
, display control circuit (DISPC), and microcontroller (μC3) in the card, serial input (SIN),
Serial output (SOUT).

Data communication is carried out serially with the in-body microcomputer (μC1) via each signal line of the serial clock (SCK) and the serial clock (SCK). The communication target with the microcomputer (μC1) in the body is the chip select terminal (C8LM) (C8D
X) (C8DISP) (C3CD). That is, when the terminal (C8IJL) is at "Low" level, the photometry circuit (LH) is selected and the terminal (C3DX
) is at Low level, the film sensitivity reading circuit (
DX) is selected and the terminal (C3DISP) is “'Low”.
When the terminal (C8CD) is at the ``level'', the display control circuit (DISPC) is selected, and when the terminal (C8CD) is at the ILo level, the microcomputer (μC3) in the card is selected.

Furthermore, three signal lines for serial communication (SIN)
(SOUT) (SCK) is the terminal (J+5) (Js)
; (J, a) (JJ: (J+e) Connected to the lens circuit (LECT) via (Je), and when selecting the lens circuit (LECT) as a communication target, connect the terminal (C8LE) to “ This signal is set to 'Low' level, and this signal is transmitted to the lens internal circuit (LEcy) via the terminal (, h) (JI3).

[1, 2, 2] Configuration of intra-lens circuit Next, the intra-lens circuit (LEcv) will be explained based on FIG. 4. FIG. 4 is a circuit diagram of the lens internal circuit (LECT) built into the interchangeable lens (LE). In the figure,
(μC2) is an in-lens microcomputer (hereinafter referred to as "in-lens microcomputer") for controlling the zoom motor (M3) built into the interchangeable lens (LE), data communication with the camera body (BD), mode setting, etc. ”).

Here, the terminal group (J
, ) to (J8), (J, ) is a power supply terminal for supplying the power supply voltage (VCC2) for driving the zoom motor from the body side to the lens side, and (J2) is a power supply terminal for supplying power supply voltage (VCC2) for driving the zoom motor, and (J2) is a power supply terminal for supplying power supply voltage (VCC2) for driving the zoom motor. A power supply terminal for supplying the power supply voltage (VDll) from the body side to the lens side, (J3) is a terminal for input/output of a signal indicating a data communication request, (J4) inputs a clock for data communication from the body side (J5) is a serial input terminal that inputs data from the body side, (J6) is a serial output terminal that outputs data to the body side, (J7) is a ground terminal for circuits other than the motor drive circuit, (J8) is the ground terminal of the motor drive circuit.

(R3IC) is a reset IC for resetting the lens microcomputer (μC2) when the voltage (VDD) supplied from the body becomes below the normal operating voltage of the lens microcomputer (μC2). (R2) and (C2) are a reset resistor and a capacitor for resetting the microcomputer (μC2) inside the lens.

(RE2) is the reset terminal of the microcomputer (μC2) in the lens, and the voltage (Van) for driving the circuit in the lens is supplied from the body, and the resistor (R2) and capacitor (
When the terminal (RE) changes from the "I L O,11 level" to the "old gh" level by C2), the microcomputer (μC2) in the lens performs a reset operation.

(ZVEN) is a zoom speed encoder interlocked with the aforementioned zoom operation ring (80), which sets the speed and direction of power zoom during power zoom.

(ZMEN) is a zoom encoder for indicating the absolute position of the zoom ring.

(M3) is a zoom motor for driving the zoom lens group (zoom ring). By driving the zoom lens group by this zoom motor, the focal length can be changed without changing the position of the image point.

(MD3) is a motor drive circuit for driving the zoom motor (M3), which controls the rotation of the zoom motor (M3) according to control signals indicating the motor drive direction and drive speed given by the microcomputer (μC2) inside the lens. Control. Further, in response to a motor stop signal and a motor stop signal given from the microcomputer (μC2) in the lens, both ends of the zoom motor (O3) are short-circuited and voltage application is stopped, respectively.

(D5) is a diode for backflow prevention, and the power supply voltage (V
CC2) is supplied to the motor drive circuit (MD3) and prevents reverse flow from one power source to the other power source.

Next, I will explain the switches.

(SLE) is a lens attachment detection switch, which is turned OFF when the interchangeable lens (LE) is attached to the camera body (BD) and the mount is locked. In other words, when the interchangeable lens (LE) is removed from the camera body (BD), the switch (SLE) is turned on and the condenser (C2
) are shorted. This allows the capacitor (C2
) is discharged, and the terminal (RE2) of the microcomputer (μC2) in the lens becomes "Low" level. After that, the interchangeable lens (LE) becomes the camera body (BD).
When installed, the switch (SLE) turns OFF,
The capacitor (C2) is charged by the power supply line (VDD), and after a predetermined time determined by the resistor (R2) and capacitor (C2), the terminal (RE2) changes to the "old gh" level, and as described above, the lens The internal microcomputer (μC2) performs a reset operation.

Now that we have finished explaining the hardware of this embodiment, we will now begin to explain the software.

[2] Software configuration [2,1] Software of the in-body microcomputer First, the software of the in-body microcomputer (μC1) will be explained.

When the battery (El) is attached to the camera body (BD),
In the in-body circuit shown in Figure 3, the battery insertion detection switch (SREI) is turned OFF, the reset capacitor (C1) is charged via the resistor (R1), and the in-body microcomputer (SREI) that controls the entire camera is charged. The reset terminal (REI) of μC1) is set from “Low” to “°”H.
A reset signal that changes to "high" level is input.

By inputting this reset signal, the in-body microcontroller (μ
C1) starts generating a clock by internal hardware, operates a DC/DC converter (DD), and is supplied with a driveable voltage (VIIn).
A reset routine shown in FIG. 5 is executed.

In addition, in the sleeve state (stopped state) described later, the clog of the microcomputer (μC1) in the body stops and the DC/
The DC converter (DD) has also stopped operating, but in this interrupt-based control from the sleeve state, the internal hardware of the microcomputer (μC1) in the body controls the Glock generation and D C/D
The operation of the C converter (DD) is started.

The reset routine in Figure 5 first disables all interrupts and resets various boats and registers (
Steps #5 to #10). And step (R20)
It is determined whether the main switch (island) is turned on. Also, the main switch (Sl) changes from ON to OFF.
or when changing from OFF to ON, an interrupt (SMINT) is generated by operating the main switch, and execution starts from step (R20).

At step (R20), the main switch (Sl, l) is turned to O.
When it is determined that it is N, all interrupts are enabled, and the output port (Tr2), which is a power control terminal, is turned on to turn on the transistor (Tri) (Tr2) for supplying power to each circuit and the lens side. PWI) (PN2) to “High” level (steps #25 to #3)
5).

Next, in step (R40), an AF lens renormalization subroutine is executed. This subroutine is shown in FIG. When the subroutine is called, first step (
R150) executes the lens communication subroutine.

Lens communication (2) is communication in communication mode (2) in which data from the lens is input, which is explained in this embodiment, among various communication modes between the body and the lens. FIG. 11 shows the subroutine for lens communication. When this subroutine is called, first, data indicating that the communication mode is mode 1 is set, and the terminal (C8LE) is set to 'Lo'.
w" level to notify the lens that data communication will be performed (step #400. R402). Then, in step (R405), 2-byte serial communication (serial input/output) is performed.

In this serial communication, the body and lens serially output data to each other and simultaneously serially input data sent from the other. The first byte outputs data indicating the type of body from the body. At this time, meaningless data FFH (subscript 8
indicates a hexadecimal number) is output, and the lens and body each input data sent from the other party. The second byte outputs data indicating the type of lens from the lens.

At this time, the body outputs meaningless data F F s, and the lens and body each input data sent from the other party. Then, to indicate that the communication mode with the lens is mode 1, 1-byte data of the communication mode set above is serially output to the lens,
Wait for a while, input 13 bytes of data from the lens,
The terminal (C3LE) is set to "High" level and the process returns (steps #410 to #4.25). The reason why the terminal (C8LE) is set to the "')Ijgh" level before returning is to notify the lens of the end of this lens communication. I am doing it.

Here, the contents of the communication data between the body and the lens in this example will be explained.

Lens communication in this embodiment includes communication in mode I and mode II. These communications are referred to as lens communication I and lens communication II, respectively. First, in lens communication (■), lens-specific data from the lens to the body is (1) Open aperture value AV[1 (11) Maximum aperture value AVmax (jii) Conversion coefficient for converting defocus amount to drive amount, L (hereinafter, this conversion coefficient will be referred to as "driving amount conversion coefficient") (iv) Current focal length f.

(v) Lens attachment signal. H (vi) Conversion coefficient KN for converting the amount of extension into distance (hereinafter, this conversion coefficient is referred to as "distance conversion coefficient") (vii) Shortest focal length Lin (viii) Maximum focal length f,, 8 is sent. . Data (hereinafter referred to as "zoom switch data") indicating the state U of the zoom switch (whether or not the zoom operation ring has been operated) is also sent.

On the other hand, in lens communication ■, from the body to the lens (1x)
Target focal length fc (X) APZ presence/absence.

5 Executing the IOH subroutine for the first time (first execution within the iteration) or not Data indicating that is sent.

Each of the data (i) to (X) above is input/output as 1-byte data.

Returning to the flowchart of FIG. 6, the explanation will be continued.

When you return from the lens communication subroutine above,
The value of the counter N that indicates the drive amount of the AF lens for focusing is set as -NLG (a negative value with a large absolute value, and whether the first bit is O or 1 indicates positive or negative), and A
A subroutine for driving the lens for the F lens is executed (steps #152 and #155).

Here, a subroutine for driving the lens is shown in FIG.

When the same subroutine is called, it is determined whether the sign of the lens drive amount N is positive (or the first bit is 1 or not) (step #1197). If not, output each signal to the motor drive circuit (MDI) with the retraction direction as the lens drive direction, set a flag (LMVF) indicating that the lens is being driven, and return (steps #1198 to #1200).
) In this embodiment, the driving of the AF lens is controlled by counter interrupt (2) and timer interrupt (2). Here, the counter interrupt ■ is the encoder (ENC) (Figure 3)
The timer interrupt (2) is generated when a pulse indicating the driving of the A and F lenses is input, and the timer interrupt (2) is generated when there is no next counter interrupt (3) within a certain period of time after the counter interrupt (2) is performed. Then, by this timer interrupt H, it is detected that the lens has reached the terminal end (infinite end or nearest end). That is, step (#152) in FIG.
When a large absolute value is set as the driving amount N, the lens is always driven to the end without stopping midway, and the reaching of the end is detected by the timer interrupt (2) that occurs thereafter.

The above-mentioned counter interrupt (2) and timer interrupt (2) routines are shown in FIGS. 7 and 8, and will be explained with reference to these figures.

First, the counter interrupt H routine will be explained.

When a pulse from the encoder (ENC) is input, a counter interrupt (2) occurs, and the counter interrupt H routine shown in FIG. 7 is executed.

That is, 1 is subtracted from the counter value N indicating the amount of drive of the AF lens, and a new value is set as the value of the counter N. Step $12
50), the timer T1 for timer interrupt is reset and then started (step #255).

Then, it is determined whether the counter value N has become O or not (step #260), and if N = 0, it is assumed that the predetermined amount of lens driving has been completed, and the subroutine to stop the AF lens is executed and the return is performed (step #265). , if N=O, the process returns without stopping the AF lens.

Next, the routine of timer interrupt (2) will be explained.

When the timer T1, which is started after being reset in the counter interrupt (2) routine, reaches a predetermined value, the timer interrupt (2) routine shown in FIG. 8 is executed. That is, when the AF lens reaches the terminal end (infinity end or nearest end), the AF lens stop subroutine is executed (step #300), and a flag indicating that this flow has been passed (
LEEDF) is set (Step #305), timer interrupt ■ is disabled, and the process returns (Step #310).
),.

Here, FIG. 9 shows a subroutine for stopping the AF lens called in the above steps (#265) (#300). When this subroutine is called, first, in order to stop the AF motor (Ml), a control signal that short-circuits both ends of the AF motor (Ml) is outputted to the motor drive circuit (MDI) for 10 m5ec (step #350). Then, a control signal for turning off the power to the AF motor (first) is output to the motor drive circuit (MDI). Step #3
55), the flag (LMVF) indicating that the lens is being driven is reset and the process returns (step #356).

Returning to the flowchart of FIG. 6, the explanation will be continued.

Upon returning from the lens drive subroutine, timer interrupt (#1.60) is enabled,
Flag indicating that the lens has reached its end (LEEDF)
is set (step #165). By the way, in step (#152), a negative value -NLG with a large absolute value is set as the drive amount N, so before the lens reaches the end, the counter interrupt H causes N=O.
Therefore, the lens will not stop midway. In other words, there is no lens that has a drive amount such as N-N or o, so if you set it to N-NLG, the lens will always reach the end (infinity position) without stopping midway, and then it will occur. A flag (LEEDF) is set by the interrupt routine of timer interrupt (2). When it is detected in step (#165) that this flag (LEEDF) is set, step (
Proceed to #1.70). Then, assuming that the lens has been retracted to the infinity position, a counter is reset that calculates the amount NF of the lens extension from the infinity position, the flag (LEEDF) is reset, and the process returns (step #170. #175).

Returning to the flowchart in FIG. 5, the explanation will be continued.

When you return from the above AF lens loading subroutine, the process advances to step (#50) and the shooting preparation switch (
$1) is turned on. As a result of this determination, if the photographing preparation switch (Sl) is not turned on, the process proceeds to step (#62) to execute a subroutine for eye proximity detection, and then proceeds to step (#60).

The subroutine for detecting eye proximity is shown in FIG. 10, and will be explained based on this figure. When this subroutine is called, it first flags (E) indicating that the finder is being looked into.
After resetting the grip switch (SGR) (step #200), it is determined whether the grip switch (SGR) is turned on (step #202). If it is not turned on, timer interrupt I is prohibited, and the shooting preparation switch (Sl) is reset. The flag (SIONF), which is set when SIONF is turned ON or 5 seconds have not elapsed since it turned OFF, is reset and the process returns (Steps #236 and #235). When the grip switch (SGR) is turned on, a signal indicating the start of light emission is output to the eye proximity detection circuit (EPD) (
Step #205). This allows the Shiba eyepiece detection circuit (EP
D) emits infrared light from the LED.

After that, the microcomputer (μC1) in the body
A detection signal is input from the eye proximity detection circuit (EPD) (step #210), and it is determined from the detection signal whether or not eye proximity has been detected, that is, whether or not the photographer has looked into the viewfinder. Judgment Step #2
15) If peeking is detected, a flag (EPF) indicating this is set, the 5IOH subroutine is executed, and the process returns (steps #216 and #217).
).

If it is not detected that the operator is looking into the finder in step (#215), a timer interrupt is enabled, the timer TIN is reset and started, and the process returns (steps #225 and #230). This timer interrupt occurs every 250 m5ec, and when the interrupt occurs, as shown in FIG. 12, after executing the eye proximity detection subroutine (step #240), step (
Proceed to #60). In addition, in the case of eyepiece detection only, 5IO
The subroutine H (step #55) is not executed, and the power is not held on the assumption that there is no other operation after looking through the finder (step #510 in FIG. 13). Therefore, it is possible to reduce power consumption.

Returning to the flowchart of FIG. 5, the step (#50
), the case where it is determined that the photographing preparation switch (Sl) is turned on will be explained. In this case, step (
Proceed to #55) and execute the 5LON subroutine to check whether the flag (SIONF), which is set when the shooting preparation switch (Sl) is ON or 5 seconds have not elapsed since it was OFF, is set. (
Step #60). As a result of this determination, the flag (SION
If F) is set, return to step (#55),
The 81ON subroutine is repeatedly executed until the flag (SIONF) is reset. On the other hand, the flag (SI
ONF) is not set, step (#65
), in order to turn off the power supply transistors (Tri) (Tr2), both the power supply control terminals (PWI) and (PN2) are set to IIr and Owj- levels, and in order to stop the operation of the DC/DC converter (DD). Power control terminal (P
WO) is set to “Low” level, and the flag (SLONI) is set to “Low” level.
P) and waits for an interrupt (step #6
5 to #73).

Note that when the grip switch (SGR) or the photographing preparation switch (Sl) is turned from OFF to ON, an interrupt 5IINT is generated and the process is executed from step (#50).

The subroutine of the above 5IOH is shown in FIG. When this subroutine is called, first, it is determined whether the flag (SIONIF) indicating that this routine has been executed for the first time is set (step #500), and if it is not set, this flag (81ONIF) is set. Then, the first communication data to be sent to the lens is set, and the process proceeds to step (#504). When this flag (81ONIF) is set, the first communication data is reset and the process proceeds to step (#504). Then, in step (#504), it is determined whether or not the shooting preparation switch (Sl) is ON, and if the switch (Sl) is ON, the timer interrupt ■ is prohibited, the process proceeds to step (#506), and the switch ( Sl) is not turned on, the process directly proceeds to step (#506). In step (#506), interrupt 5IINT is disabled, and then the power supply terminal (PWl) is turned on to turn on the power supply transistors (Tri) (Tr2).
(PN2) together! −: “High” L/Hell and execute lens communication ■ (Step #510.
#515). Then, the subroutine of card communication (2) is executed (step #520).

The subroutine of this card communication (2) is shown in FIG. When the same subroutine is called, first the body (BD)
terminal (C3CD) to inform the card side that communication is with an IC card (hereinafter referred to as "card") inserted into the card insertion section (13) of the card.

"Low" level and set data indicating that the card communication is in mode 2.Then, set it to output mode, perform serial data communication once, and notify the card side that it is card communication in mode 2 ( Step #9
30~#936). Note that 8-bit data is transferred in one serial data communication (one 5IO), and the same applies to the following.

After that, the card side waits for the time required to perform a predetermined process, and then performs one more serial data communication to notify the card side that the data communication has ended.
Return the terminal (C8CD) to High” level (steps #938 to #942). This step (#
940) is the card switch (SCD) on the camera side.

Release switch (S2).

Learning mode switch (S3).

Single shooting/continuous shooting switch (Ssc).

It shows the status of each vertical/horizontal switch (SHL) and whether or not there is initial data communication.

Returning to the flowchart in FIG. 13, the explanation will be continued. When returning from the card communication subroutine (2), the card side waits for the time required for control in response to the above data, and then executes the card communication H subroutine (steps #515 and #530).

The subroutine of this card communication (2) is shown in FIG. When this subroutine is called, first, in order to make the card the target of communication, the terminal (C3CD) is set to 'Low' level and data indicating mode H card communication is set.Then, it is set to output mode. Then, serial data communication is performed once, and the card side is notified that the card communication is in mode ■ (steps #944 to #950).
. Next, change to input mode, wait for the time required for card-side control, and perform one more serial data exchange to determine whether or not card control is being performed.

AF one shot/continuous.

Input data indicating presence/absence of A, PZ (steps #955 to #965
).

Here, card control refers to controlling camera exposure and the like based on data set by the card.

The AF one-shot is the shooting preparation switch (
Focusing operation is performed only once when the SL) is ON (or when the eye is placed on the viewfinder), and continuous on the 8F means that while the shooting preparation switch (Sl) is ON (or when the eye is placed on the viewfinder). ) means that the focusing operation is performed continuously following changes in the subject. Also, A
The presence/absence of PZ refers to whether or not the focal length is determined according to the subject distance (based on the zoom program line). After inputting the above data in step (#965), connect the terminal (C3CD) to end data communication with the card.
) to the "')Ihigh'" level and returns (step #970).

Returning to the flowchart in FIG. 13, the explanation will be continued. When returning from the card communication H subroutine, it is determined whether or not a flag (EPF) indicating that the photographer is looking through the viewfinder is set (step #532).
, is set, an AF control subroutine is executed (step #540). This flag (EPF)
is not set, step (#535)
It is determined whether the photographing preparation switch (Sl) is turned on or not, and if the photographing preparation switch (Sl) is turned on, an AF control (automatic focusing operation control) subroutine is executed (step #540). ) This AF control subroutine is shown in FIG.

When this subroutine is called, first, it is determined whether or not the flag (AFEF) indicating the in-focus state is set (step #1100). If it is set, continuous AF is further determined. If it is determined (step #1105), the process returns if it is not continuous AF. In the case of continuous AF, the process advances to step (#1110). Also, step (#1100
) is a flag (AFEF) indicating that the focus is on.
) is not set, the step (#1.11
Proceed to 0). In step (#1110), the COD in the focus detection light receiving circuit (AFCT) performs integration (charge accumulation), and after the CCD integration is completed, the output data of the CCD converted into a digital signal is input (data dump). Step #1115). From this data, the defocus amount D
Calculate F, and apply the driving amount conversion coefficient KL to the defocus amount.
Multiply by drive amount (AF lens drive pulse number) N=DF
Find XKL and return (steps #1110 to #
1125). Then, it is determined from this drive amount N whether or not it is in focus (Step $111.30). If it is in focus, a flag (AFEF) is set, the lens extension amount NF is read, and this extension amount NF and The distance from the distance conversion coefficient KN to the subject (subject distance) DV is calculated (steps #1.135 to #1138). Here, the subject distance DV is expressed as a logarithmic value. Next, a focal length fco is determined in order to determine the size of the subject (imaging magnification) according to the subject distance. Determining the focal length according to the subject distance in this way (or performing zooming based on the focal length determined in this way) is called "auto program zoom" or rAPzJ. As will be described later, the microcomputer (μC3) in the card can similarly determine the focal length according to the subject distance. Now, when controlling based on data determined on the camera side, the imaging magnification is kept constant at 1760, and the corresponding focal length fcQ is set in steps (#
1137) by accessing a predetermined memory using the subject distance * (DV) as an address (step #1138). Then, it is determined whether the obtained focal length fc^ exceeds the maximum focal length f16 of the lens used (step $11139), the maximum focal length f. If it exceeds y, reset the focal length fca to Lay and return (step #114
0). On the other hand, if the maximum focal length is less than or equal to the maximum focal length fiax, the process proceeds to step (#1141), where it is determined whether the focal length fcp is less than the minimum focal length f1 of the lens used, and the minimum focal length f1. , the focal length f. , after resetting the minimum focal length Lin, return to step #
1142), if the minimum focal length fi, ., or more, return as is.

If it is determined in the step (#1130) that the focus is not in focus, after allowing the timer interrupt ■,
Start driving the AF lens, reset the flag (AFEF) indicating that it is in focus, and proceed to step (#113).
Proceed to step 6) (steps #1143 to #1150).

Returning to the flowchart in FIG. 13, the explanation will be continued. Upon returning from the AF control subroutine, the process proceeds to step (#560). If it is determined in step (#535) that the shooting preparation switch (Sl) is not turned on, the process proceeds to step (#545) and checks whether the flag (LMVF) indicating that the AF lens is being driven is set. Determine whether or not. When the flag (LMVF) is set, the subroutine to stop the AF lens is executed in step (#550), and then the process proceeds to step (#560); when the flag (IJVF) is not set, step (#550) is executed. Skip this and proceed to step (#560). In step (#560), the film sensitivity Sv is input from the film sensitivity reading circuit (DX), and the brightness Bv[l of the subject at open aperture is input from the photometry circuit (LM).

To explain this data input, first, the terminal (C3DX)
or (C3LM) to Low" level to select the circuit ((DX) or (LM)) to which data is to be input. Then, input data from the terminal (SIN). After inputting the data, the terminal ( C3DX) Mataha (C8LM)”
"High" L/A, and finish the data input. After inputting the data in this way, execute the card communication subroutine (2) to send these data to the card (steps #560 to #570). .

The subroutine of this card communication (2) is shown in FIG. When this subroutine is called, first the terminal (C8CD
) is set to Low level, indicating a data communication request to the card, and setting data indicating mode m card communication (steps #975 and #980).
Set to output mode and perform serial data communication once (
Step #985. #990). After that, after waiting for the necessary calculation time on the card side, serial communication is performed 7 times, and the terminal (CSCD) is set to 'High'.
level, indicates the end of data communication to the card, and returns (steps #995 to #1010). The data communicated in step (#1005) of this subroutine (data transferred to the card side) is the current focal length f.

Minimum focal length L: n Maximum focal length f768 Photometric value BV [l Film sensitivity SV Open aperture value AVl! Maximum aperture value AVmax It is.

Returning to the flowchart in FIG. 13, the explanation will be continued. Upon returning from the card communication subroutine (2), the exposure calculation subroutine (FIG. 22) is executed in step (#575). When this subroutine is called, first, the exposure value EV is determined by EV=BVs+AV+++SV (step #1285). Here, BVs is the subject brightness value measured with wide-open metering, AVs is the wide-open aperture value, and S
V is the film sensitivity. From this exposure value EV, the predetermined A
E Calculate the shutter speed TV and aperture value AV based on the program line and return (Step #12
90). Note that the AE program line is a program line that provides the relationship between shutter speed and aperture value.
Although explanations and drawings regarding this will be omitted here,
Various cards described below also calculate the shutter speed and aperture value based on the AE program line, so specific examples will be given when explaining the operations of the various cards.

After executing the exposure calculation subroutine, the card communication subroutine (FIG. 19) is executed in order to input the exposure value calculated by the card and other information (step #580). This subroutine is almost the same as the subroutine for card communication (Fig. 17), and is similar to step (#102)
The communication mode set in step 0) is mode ■, and the serial communication performed in step (#104.5) is 3.
Since the only difference is that the rotation is performed, a detailed explanation will be omitted. The data input from the card side in this communication are: card side calculated shutter speed TVcn card side calculated aperture value AVcn card side calculated focal length fcD.

After executing the subroutine for card communication (■) above, it is determined whether or not to perform exposure control, etc. based on the data on the card side, based on the data obtained in card communication (■) and the data obtained before that. step #585). A subroutine for determining this card control is shown in FIG.

When this subroutine is called, it is determined whether or not card control is to be performed based on data regarding the presence or absence of card control input from the card to the body through card communication H (step #1305). When performing card control (
When performing camera exposure etc. based on data set on the card side), control shutter speed
, the control aperture value AVc, and the shutter speed TVco calculated on the card side as the focal length fc.

The aperture value AVCD and focal length (feb) are respectively set (steps #131.0-#13], 7).

Then, based on the data entered from the card, APZ
If APZ is present, lens communication (2) is performed and the target focal length f is determined. is transferred to the lens and returned (steps #1318 and #1319). A P
If 'Z is absent, return without performing lens communication (■).

Lens communication... is lens communication I as shown in FIG.
(FIG. 11), the only difference is that the body outputs data to the lens in step (#920), so the explanation will be omitted. On the other hand, the step (#13
As a result of the judgment in step 05), when performing camera side control (when camera exposure etc. are performed based on data obtained on the camera side), the control shutter speed TVC, control aperture value AVC, and focal length fC are , the shutter speed TV calculated in step (#575) on the camera side,
Set the aperture value AV and focal length fca respectively. Steps #1320 to #1327), Step (
Proceed to #1318).

Returning to the flowchart in FIG. 13, the explanation will be continued. When returning from the above card control determination subroutine, the control shutter speed TVc, the control aperture value AVc,
Presence of card function (presence of card control).

The data indicating that the learned APZ is being performed is serially output to the display control circuit (DISPC), and the display control circuit (DISPC) uses the display section (DISP) on the body based on the input data. Display is performed (step #590). The display section (DI) on this body
FIG. 14 shows the display contents by SP). In this figure, (101) is a symbol displayed when the card function is working, and (102) is a symbol displayed when learned APZ is being performed. Further, in the numerical display (103a) (103b), the four digits from the left represent the shutter speed, and the next two digits represent the aperture value.

These numerical values are displayed based on data serially output from the in-body microcomputer (μC1) to the display control circuit (DISPC).

After the above display (step #590) is completed, it is determined in step (#595) whether the release switch (S2) is turned on. Release switch (S2) is O
If it is N, in step (#610) it is determined whether or not it is in focus using the flag (AFEF), and the in-focus state u (AFEF: 1) is proceeded to the tear lever step (#615), where the in-focus state is determined. If not, the process advances to step (#638) and no release is performed. In step (#615), all interrupts are prohibited, exposure control is performed, and after the exposure control is completed, one-frame winding control is performed (step #615).
~ #625). To indicate that the 81ON subroutine has ended, the flag (SIONF) is reset and an interrupt S is generated by turning on the shooting preparation switch (Sl).
l, allow INT and return (step #630
, #635).

Release switch (s2) in the step (#595)
If it is determined that is not ON, step (
The process proceeds to step (#638) in the same way as when it is determined in step #610 that the camera is not in focus. Step (#638)
Then, it is determined whether the photographing preparation switch (sl) is turned on or not. When the shooting preparation switch (sl) is ON, the timer T2 for power retention is reset and started in step (#640), and the flag indicating 81ON (when the shooting preparation switch (sl) is ON or OFF A flag (SIONF) that is set when 5 seconds have not elapsed since the current state (SIONF) is set, and the process returns (step #642). On the other hand, step (#638
), if it is determined that the photographing preparation switch (Sl) is not turned on, it is determined whether the flag (EPF) indicating eye proximity detection is set or not (step #644);
If it is set, return to step (#500). If the flag (EPF) is not set, the process advances to step (#650) and it is determined whether or not zooming is in progress based on the zoom switch data. As a result of this determination, if zooming is in progress, proceed to step (#640), reset and start timer T2 for power retention, extend the power retention time, set a flag (SIONF), and return ( Step #642). If it is determined in step (#650) that zooming is not in progress, the flag (310)
IF) is set or not, step #
652), returns if not set. Thereby, when this flow (subroutine of 5LON) is executed by eye-applying, but the eye-applying is stopped, the power is not held, thereby reducing power consumption.

That is, when returning from the 5LON subroutine and returning to the reset routine (Fig. 5), the flag (SION
F) is in the reset state, so the power supply transistor (T
ri) (Tr2) is turned off and the operation of the DC/DC converter (DD) is stopped (steps #60 to #70)
. On the other hand, in the step (#652), the flag (S
IONF) is set, the process proceeds to step (#655) and the power supply holding timer T is set.
2 determines whether 5 seconds have elapsed, and if the result is that 5 seconds have not elapsed, returns. If 5 seconds have elapsed, proceed to step (#630) and press the shooting preparation switch (S).
1) is turned OFF, the end of photographing is controlled.

Returning to the flowchart of FIG. 5, the case where it is determined in step (#20) that the main switch (island) is not ON will be described. In this case, the process advances to step (#80), and interrupts other than the interrupt SMINT caused by the switch (Srt) are prohibited, and the AF lens renormalization subroutine is executed (step #90). As a result, the AF lens is retracted to the most retracted position. This point has already been explained, so a detailed explanation will be omitted. After executing the AF lens renormalization subroutine, turn off the transistors (Tri) (Tr2) that supply power to the circuit on the body side and the zoom motor (M3) inside the lens by turning off the terminals (PH1) (PH2). In order to further turn off the DC/DC converter (DD), the terminal (PWO) is set to 'Low' level, and the interrupt SM, I is generated by turning on the main switch (Sl).
Interrupts other than NT are prohibited and stopped (enters sleep state) (steps #120 to #130).

This completes the explanation of the software for the in-body microcomputer (μC1), and next we will move on to the in-lens microcomputer (μC2).
Describe the software.

[2,2] Software for the microcomputer in the lens When the lens is not attached to the camera body, the lens attachment detection switch (SLE) shown in Figure 4 is turned on, and the reset terminal CRB2) of the microcomputer in the lens (μC2) is turned on. ° Since the level is maintained at “Low”, the circuit on the lens side is not driven at all. When the lens is attached to the camera body, the lens attachment detection switch (SLE) turns OFF.
Then, a signal changing from °'Low' level to °lHighll level is input to the reset terminal (RE2).As a result, the microcomputer in the lens (μC2) executes the reset routine shown in Fig. 24. In the routine, after resetting the ports and registers (step #L5), the routine stops (enters the sleep state).

Next, processing when a C8 interrupt occurs will be explained.

°'High' from the body to the lens terminal (C8LE)
When a signal changing from ° level to 'Low' level is transmitted, the microcomputer (μC2) in the lens executes the O8 interrupt routine shown in Figure 25.In this routine, first, it responds to the clock from the body. Then, 2-byte serial communication (serial input/output) is performed (step #560).Next, data indicating the communication mode is input from the body through 1-byte serial communication (serial input), and the communication mode is determined ( Step #L585. #
L590). Then, depending on the communication mode determination result, the following processing (processing corresponding to lens communication I and II in the in-body microcomputer (μC1)) is executed.

In other words, if the communication mode is MODE, 13-byte data should be serially output to the body side in step #L6.
20), wait for the signal to the terminal (C8I, E) to change from "Low" level to "High" level (step #L625), and when it becomes 11 Hlgh l- level, proceed to step (#L610) and PZ. Execute the subroutine repeatedly. Note that the reason we wait for the signal to the terminal (C8LE) to change from °"Low" level to "old gh°" level in step (#L625) is because the communication between the lens and the body is completed. This is to ensure that no other processing is performed during communication.

This confirmation of the end of communication is performed in the same way in communication mode (2) (step #L635). Furthermore, even while the PZ subroutine is repeatedly executed in step (LL610), an O8 interrupt is possible.
In this case, the interrupted routine is considered to have ended.

If the communication mode is mode ■, serially input 3 bytes of data from the body side (step #L630), and the signal to the terminal (C8LE) changes from "Low" level to "'H".
Wait for the change to “high” level (step #L635
), Step (ljL61
0) and repeatedly executes the PZ subroutine.

The above PZ subroutine is shown in FIG. 26, and will be explained based on this figure. When this subroutine is called, first, when eye contact is detected or when the shooting preparation switch (S
l) Determine whether or not data indicating the first data communication when operated is sent from the body, and if such data is sent, set a flag indicating that a zoom operation was performed. (operation F) and step (
Proceed to #L710). This flag (operation F) is reset only when data communication is performed for the first time, that is, only when the 5IOH subroutine is executed for the first time. If this is not the first data communication and such data is not sent, step (#L705) is skipped and the process immediately proceeds to step (#L710). Step (#L, 710
) reads the encoder (ZVEN) indicating whether the zoom operation ring is being operated or not, and moves to the next step (#L7
15) Determine whether a zoom operation is being performed.

If there is a zoom operation, the process advances to step (#L750), sets a flag (operation F) indicating that a zoom operation has been performed, and sends a control signal to the motor drive circuit (Mn2) according to the direction and amount of the operation. The output signal controls the drive of the zoom lens group (step #L755). Then, a flag (ZMVF) indicating that the zoom lens group is being driven is set and the process returns (step #L760). Note that the details of the lens control (step #L755) are not directly related to the present application, so a description thereof will be omitted.

If it is determined in the step (#L715) that there is no zoom operation, the process proceeds to step (#L720) and it is determined whether or not the flag (operation F) is set, and if it is set, It is assumed that the photographer performed the zoom operation after determining that the focal length (angle of view) determined by APZ was inappropriate, and therefore APZ control is not performed. That is, it is determined whether or not a flag (ZMVF) indicating that the zoom lens group is being driven is set (step #L730);
If it is not set, return as is; if it is set, it is assumed that the zoom operation has been cancelled, stop the driving of the zoom lens group, reset the flag (ZMVF), and then return (steps #L735 and #L737).
). On the other hand, the flag (operation F) is set in step (#L720).
If it is determined that is not set, step (
The process proceeds to #L725), and the presence/absence of APZ (whether or not to determine the target focal length for zooming according to the subject distance) is determined based on the data sent from the body. When APZ is present, the focal length f sent from the body. Let fLC be the focal length for driving the lens, control the driving of the zoom lens group so that this focal length is achieved, and return after the driving is completed. Step #L740. #L7
45), A, If there is no PZ, simply return.

Note that the details of the lens control (step #L745) are not directly related to the present application and will not be described in detail.

This completes the explanation of the software for the microcomputer in the lens (μC2), and next we will explain the microcomputer in the card (μC3).
Describe the software.

[2, 3] Software of the microcomputer in the card In the camera system of this embodiment, a sports card, an auto-depth card, a portrait card, etc. can be used as the above-mentioned IC card. Below, the microcontroller inside the card (μ
By explaining the software in C3), we will explain the operations of three types of cards: sports cards, auto-depth cards, and portrait cards.

[2, 3, 1] Sports card A sports card is a card suitable for photographing moving subjects in sports, etc. When you attach this card to your camera and take a picture, the camera's AE program line will be set to the high-speed side. This allows you to take pictures at a faster shutter speed. The operation of this card will be explained below.

When this sports card is attached to the camera, the reset routine shown in Figure 27 is executed and the flag is set.

All registers (RAM) are reset and sleeved (step 5-5).

Next, connect 1 from the camera to the sports card terminal (C8CD).
1 r, When a signal that changes from the owIT level to the °'High" level is sent, the sports card
Execute the interrupt routine shown in the figure. Here, the sports card performs serial communication once (8-bit data transfer) in synchronization with the clock sent from the camera to input data indicating the mode of card communication (step S-15). Then, from the data indicating this mode, it is determined which type of communication (modes 1 to 2 correspond to card communications 1 to 2, respectively), and processing is performed according to the type of communication.

That is, first, it is determined whether or not there is card communication (Step S-20). If card communication is ), receives data from the camera. Based on this data, a data setting subroutine (step S-35) is executed, and then it goes to sleep. The content of the data transferred between the camera and the card has already been described in the explanation of the card communication subroutine (Figure 16) executed by the microcontroller (μC1) in the body, so it will not be described here. The explanation will be omitted.

The same applies to the explanation of transfer data in card communications (1) to (1) (FIGS. 17 to 19).

In Section 22, the explanation of the above data setting subroutine is given in Section 29.
Do this based on the diagram. When this subroutine is called, first, in step (S-430), the card switch (S
ep) is turned on, and if the card switch (SaD) is turned off, the flag (SCDF) is reset and the process returns (step S-480).

When the card switch (Sep) is ON, the flag (Sep)
Step (S-4)
35), and if it is set, the switch (SCD
) continues to be manipulated and returns. flag(
SCDF) is not set, this flag (
SCDF) is set (step S-440), it is determined whether the card function is currently turned on (steps S-4, 45). As a result of this judgment, if it is ON, data indicating the absence of card control (card function 0FF) is set as the data to be output to the camera side in card communication ■, and if it is OFF, data indicating the presence of card control (card function ON)
Set the data that indicates. The card switch (Sep) is turned on by setting the data of whether or not card control is enabled.
The presence/absence of card control is alternately switched each time the card is controlled. After setting the data on the presence or absence of card control, the process advances to step (S-463) to control learning.

That is, in step (S-463), it is determined whether the switch (S3) indicating a change in learning mode has been changed from OFF to ON, and if the switch (S3) is changed from OFF to ON, the learning mode is set to ON mode for learning. Each time the switch (S3) is turned from OFF to ON, three modes are cyclically switched: an OFF mode in which learning is not performed, and a reset mode in which the content that has been learned is reset (step S-465).
), proceed to step (S-470). Step (S-4
If it is determined in step 63) that the switch (S3) is not changed from OFF to ON, the process proceeds to step (S-470) without changing the learning mode. Step (S-470)
Then, it is determined whether the release switch (S2) is turned on based on the data sent from the camera through card communication I, and if it is not turned on, step (S-
475), the flag indicating continuous shooting (continuous shooting F) is reset, and the process returns. Release switch (S2) is ON
If so, proceed to step (S-480), determine whether or not continuous shooting mode is selected based on the data sent from the camera (single shooting/continuous shooting switch (Ssc) data), and select continuous shooting mode. If so, it is determined whether a flag indicating continuous shooting mode (continuous shooting F) is set or not (step S-485).
, the release switch (S2) is set to O.
If this flow is passed through again with the result being N, the process returns without performing any learning. This means that learning in continuous shooting mode is
This is because learning is performed only for the first shot of continuous shooting, and is not performed for the second and subsequent shots. Thereby, it is possible to avoid repeating learning of similar photographic scenes and to perform only learning for each different photographic scene.

If it is determined in step (S-480) that the continuous shooting mode is not in effect, the process proceeds to step (S-495), executes a learning subroutine, and returns. Furthermore, if the flag (continuous shooting F) is not set in the step (S-485), this is the case of the first shot in continuous shooting mode, so after setting the flag (continuous shooting F) (step S-490), executes the learning subroutine and returns.

The learning subroutine described above will now be described with reference to FIG. 32. When this subroutine is called, first, it is determined whether the learning mode is OFF mode or not in step S-5.
00), returns without performing learning if the mode is OFF. If the mode is not OFF, step (S-50
Proceed to step 5) to determine whether the learning mode is the reset mode, and if it is the reset mode, reset the E2FROM (electrically rewritable programmable ROM) built into the card for learning (△f= o) Return to L. If the learning mode is not the reset mode, proceed to step (S-520), and the focal length fCD determined on the card is the minimum focal length f of the interchangeable lens being used.
3. and the maximum focal length fsax, and within this focal length range (fs:n≦fCD≦f,
. . ), there is no point in learning a focal length that cannot be set, so the program returns without learning. Focal length fCD is within the above range (f, i, ≦fcD≦f,,,)
If so, proceed to step (S-525) and check whether the camera orientation is vertical or not using the data from the camera (vertical/horizontal switch (vertical/horizontal switch)
The determination is made based on the data in S8, ). If the result of this determination is vertical, the focal length is f determined by the card. , 1/
1.3 (imaging magnification ratio when the posture is vertical and horizontal), this is newly set as fCD, and step (S-530
) and executes subroutine LR to determine whether the focal length should be learned (determine whether it is within a predetermined learning range). Note that the focal length fca is expressed logarithmically, so in actual calculation, r 1/1.3
"Multiply by" means "rlogl, subtract 3."

The above subroutine LR is shown in FIG. When this subroutine is called, first, the flag (LRF) indicating that learning should not be reset is reset in step S-600.
), it is determined whether the focal length f8 of the body (the latest focal length at the time of actual shooting) is 172 or more and within twice the focal length fCD determined on the card (step S-60).
5) If it is within this range, return as is; if not, return after setting a flag (LRF) (step S-610). In this way, if the deviation is too large (difference between fcn and fa),
The scene is different from the sports scene assumed in this example, and based on this large deviation, the zoom program line that gives the relationship between the subject distance and focal length is changed (
Since it is not the intention of this embodiment to perform any learning (learning), no learning is performed.

Returning to the flowchart of FIG. 32, the explanation will be continued. When returning from the subroutine LR, it is determined whether or not a flag (LRF) indicating that learning is not to be performed is set (step S-535). If it is set, it is determined that learning is not to be performed and the process returns. Flag (LR
F) is not set, the camera's focal length fe
(the latest focal length at the time of actual shooting) and the focal length f obtained from the card. D (see steps S-830 to S-870 of the AE calculation subroutine described later) Δf+=fB
Find fcD (actually it is a ratio, but since the focal length is expressed logarithmically, find the difference) and subtract the above focal length difference Δf1 from the previous deviation Δf, that is, Δf - Δ
f, is set as a new deviation Δf, and this new deviation Δf is written and stored in the E2PR, OM built in the card, and then the process returns (steps S-545 to S-555).

Returning to the flowchart in FIG. 28, step (S-20
), the type of communication is card communication ■ and it is determined that there is no ＼ will be explained. In this case, step (S-40)
Proceed to step 3 to determine whether or not card communication is being performed. If card communication is The card is set to the output side in order to output it to the camera (step S-45), and after performing serial communication, it goes to sleep (step S-50). Here, the sports card is always set to have AP2 in the above data, but this is because it is a moving subject [and its size (imaging magnification) is always followed).

In step <5-4o>, the type of communication is card communication...
If it is determined that it is not, proceed to step (S-51) to determine whether or not it is card communication m, and if it is card communication ■, input the card side (step S-52).
, perform serial communication and input camera data (
Step S-53). Then, the next step (S-54
), the AE calculation subroutine (including focal length calculation) for calculating data for controlling the camera is executed (step S-54), and the process goes to sleep. The A and E calculation subroutines will be described later. In addition, step (S
-53) The data input from the camera is the card communication ■
As mentioned in the explanation of the subroutine (FIG. 18), the current focal length f.

Minimum focal length flin Maximum focal length LaX Photometric value BVe Film sensitivity SV Open aperture value AVs Maximum aperture value AVmay It is.

In the step (S-51), the type of communication is card communication■
If it is determined that it is not, the process proceeds to step (S-60) as it is card communication (■), the card is set as the output side, and each data calculated on the card side, that is, the shutter speed T
VCD=TVC Aperture value AVcD'' AVc Target focal length feb Each data (refer to the AE calculation subroutine in Figure 30)
is transferred to the camera side via serial communication (step S
-85), sleep.

Next, the AE calculation subroutine (step S-54 in FIG. 28) will be explained with reference to the flowchart in FIG. 30. When this subroutine is called, first, in steps (S-700) to (S-730), the shutter speed TVr at the bending point of the AE calculation diagram (AE program line) as shown in FIG. 31 is calculated. .

That is, in step (S-700), it is determined whether the focal length f of the lens (the current focal length input from the camera side in step 5-53 in FIG. 28) is 50 mm or more, and f
When p<50mm, there is less possibility of camera shake, so TV
, -9, the aperture is set to a slightly narrowed line (step S-705). On the other hand, when f is 250 mm, the line is changed as follows according to the shooting magnification β in order to increase the shutter speed, assuming that a moving subject is nearby and will be photographed in a large size (step S-710). ~S-730
). In other words, when β>1150, TVI"11 1/100< β≦1150, TVI = 10
Let β≦17100 knots and TV+=9.

Next, from photometric brightness (main subject brightness) BVs to exposure value E
Vs is calculated (step S-735). Then, whether or not this exposure value EVs exceeds the control limit (AVmax+
Exceed TVmax or AVs + TVmi
step S-740, S-7
50) When the exposure value EVs exceeds the control limit value, limit values are set as the control shutter speed TV0 and the control aperture value AVc (steps S-745, S-755).

As a result of the above judgment, if the exposure value EVs does not exceed the control limit, calculate the shutter speed TV"EVs AVll when the aperture value is AV=AVs, and this shutter speed TV is the shutter at the turning point of the AE program line. Determine whether the speed is less than or equal to TVr (step S-
760, S-765), and when TV≦TVr, the control aperture value AVc and the control shutter speed TVc
Set AVc-AVe TVc=TV and proceed to step (S-830), and when TV>TVr, A
Assuming that the E program line changes, the control aperture value AVc and control shutter speed TVc are determined as follows.

In other words, when the focal length is long, the AE program line is a line that increases the shutter speed to prevent camera shake, and when the focal length is short, the line is a line that narrows the aperture a little in consideration of depiction (taking into consideration the depth of field). shall be. Figure 31 shows such AE program lines as follows: f=35mm F=2.8 f=105mm F=4.58f=210mm
This is a drawing of three lenses with F=4. Here, f
is the focal length of each lens, and F is the F number of each lens. In Figure 31, f-105mm and f = 2
Three lines correspond to each 10 mm lens, and the lines are changed depending on the imaging magnification β. In other words, these three lines are β≦17 in order from the top.
When 100, When 1/100<β≦1150,
When β>1150, respectively.

Therefore, in order to obtain the aperture value AV from the AE program line as shown in FIG. 31 for the exposure value EVs, as shown in steps (S-775 to S-795), Different calculation formulas are used, and different values of TVr in these calculation formulas are used depending on the value of β (see step 5-71.0-3-730). In addition, although the above explanation was given using three single focus lenses as an example, the same applies to a zoom lens.

In step S-800), it is determined whether the aperture value AV obtained in steps (S-775 to S-795) is smaller than the maximum aperture value AVmax.
When Vmax, AV, = AVmax TVc = EVs AVmax Toshi (Step S-805), Step (S-830)
Proceed to .

When AV<AVmax, set the shutter speed to TV=E
Vs-AV (step S-810), and it is determined whether this shutter speed TV is smaller (slower) than the maximum shutter speed TVmax (step S-815).

Then, when TV<TVmax, AVc=AV TVc=TV (step S-820), and when TV≧TVmax, AVc=EVs-TVmax TVc=TVmax, and the control aperture value AVc is calculated again and the control shutter speed TVc Set TVmax to step S-8.
25), and then both proceed to step (S-830).

After step (S-830), APZ is calculated, that is, the focal length fCD corresponding to the subject distance is determined based on the zoom program line (program line representing the relationship between subject distance and focal length) shown in FIG. Perform the calculation for In this embodiment, in order to reduce the R, OM capacity required to store this zoom program line, an integer of the focal length corresponding to the subject distance DV (distance information expressed in logarithm) is used. Only those corresponding to the subject distance DV are stored in the ROM. Since the subject distance DV is generally not an integer, the focal length fcn corresponding to the subject distance DV is obtained by linearly interpolating the zoom program line between two adjacent integers (step S described below). -85
(see 0). Hereinafter, a method of calculating this focal length fen will be explained.

First, subject distance DV (distance information expressed in logarithm)
The integer part DV+ of is taken out, the table in the ROM is accessed using this integer part DV+ as an address, and the focal length f
, 8 (logarithmic value), and an integer DV+ that is 1 larger than the integer part DV+. , and read out the focal length f2 (logarithmic value) in the same way (step S-
830-S-840). Next, take out the decimal part DVa of the subject distance DV and calculate the focal length fc to be calculated using the card.
n as fcn=f+x+ (f2x f+x)XDVll-
(Steps S-845, S-850). Then, the learned value △f (step S-555 in FIG. 32)
) is read from the E2FROM, and the value obtained by adding this Δf to the focal length fen is set as a new fcn (steps S-855 and S-860). Next, step (S-8
65) determines whether the camera's attitude is vertical or not, and if it is not vertical, returns as is, but if it is vertical, the focal length is set to 1.3.
(Since it is expressed as a logarithm, logl
. 3) Return (Step S-
870).

As can be seen from the method for calculating the focal length fcD above, when shooting under the control of this card, the original zoom program line is shifted entirely by the learned value △f. Zooming will be performed automatically.

[2, 3, 2] Auto depth card The auto depth card is a card suitable for taking photos where both the person and the background are in focus when traveling or at events. The camera is then controlled so that everything from the person to the background is in focus. The operation of this card will be explained below.

When this auto depth card is installed in the camera, the third
Execute the reset routine shown in Figure 5, and when a signal is sent from the camera to the terminal (C3CD) of this card that changes from the "Low" level to the "High" level,
The interrupt routine shown in FIG. 36 is executed. The processing contents of these reset routines and interrupt routines are as follows:
Since they are the same as the sports card reset routine (FIG. 27) and interrupt routine (FIG. 28), their explanation will be omitted.

However, in card communication (2) in FIG. 36, data indicating presence/absence of one-shot AF APZ is sent from the card to the camera (steps 0-50).

The data setting subroutine shown in FIG. 37 is a part of the sports card case described above (FIG. 29), so we will explain it as well as the learning subroutine called from this data setting subroutine and its learning subroutine. A subroutine LR for determining whether or not the focal length and imaging magnification at which learning should be performed in the learning subroutine (whether or not they are within a predetermined learning range) is shown in FIGS. 39 and 53, respectively, and will be described.

What is different in Figure 37 from the case of sports cards (Figure 29) is steps (0-456) to (0-458).
is added, and in step (0-456), based on the data sent from the camera, after eye contact detection or after 5 ION (without eye contact detection, shooting preparation switch (
It is determined whether or not there is the first data communication after SL) is ○N. Then, if it is the first data communication, APZ is performed, and if it is not the first data communication, APZ is prohibited. That is, in this card and the portrait card described later, the APZ operation is performed only the first time after the camera is activated (the first execution of the SLON subroutine). This is because the subject to be photographed is a stationary subject, so it is considered that one time is sufficient.

Next, the learning subroutine of step (0-495) will be explained based on FIG. Since it is the same as that shown in Figure), the explanation of this part will be omitted. However, step (o-530)
Since the processing contents in subroutine LR are different from those for sports cards (FIG. 33), this subroutine will first be explained based on FIG. 38.

When this subroutine is called, the flag (LRF) indicating that learning should not be reset must be reset (steps 0-600), and the focal length fB of the body (the latest focal length at the time of actual shooting) is 28 mm or more and 100 mm. If it is within this range, calculate the imaging magnification β (step 0-61).
0). The photographing magnification β is 1/70 (magnification when the subject distance is 2 m and the focal length is 28 mm) and 1/160 (magnification when the subject distance is 16 m and the focal length is 100 mm) or less. It is determined whether this is the case (step 0-615), and if the photographing magnification β is within this range, the process returns directly. On the other hand, when the photographing magnification β is not within this range, or when the focal length fs of the body is not within the above range (within a range of 28 mm or more and 100 mm or less), a flag (LRF) indicating that learning should not be set is set. Set and return (steps 0-620),
In other words, in such a case, it is assumed that the focal length range or shooting magnification range is not commonly used for shooting with an auto-depth card, and that the shooting is special for using this card, so it should not be studied. do.

After determining whether or not the focal length and photographing magnification should be learned as described above, the process proceeds to steps (0-545) and subsequent steps, but before that, we will explain how to learn using an auto-depth card and a portrait card. is shown in FIG. 40 and will be explained.

In this figure, the zoom program line (hereinafter referred to as "original line") before this learning is (po
), and the zoom program line after this learning is (pL).

Now, assume that the subject distance is DV and the focal length of the body (the latest focal length at the time of actual shooting) is fB. Assuming that this subject distance (DV) is composed of an integer part (DV+) and a decimal part (DVII), the integer subject distance DV+ becomes the focal length f1 by 1 from the DV+ according to the original line (po). The object distance DV+4+, which is a larger integer, is respectively associated with the focal length f1°1. These focal lengths f1 and fl. , the focal length fCD corresponding to the subject distance DV is determined based on the original line (pa). L in the figure is this focal length f
It is the deviation between cD and the focal length of the body (the latest focal length at the time of actual shooting) fa, and this deviation is expressed as a predetermined integer n.
Let the value divided by ΔfL be ΔfL. That is, △f L −L
/n=(fe fcD)/n−■. Here, the value of the integer n (n=1 to 3) is determined experimentally. In addition, instead of the above formula, Δf L=4
=k(fa-fco)...may be set as ■. However, k is a positive number of 1 or less, and its value is determined experimentally.

Next, the subject distance is DV and the focal length is fcn+Δf.

point, the subject distance is DV+-+ and the focal length is f+-+
The point and subject distance are DV+. 1 and the focal length is f+++
The straight line connecting these points is the learning line. Therefore, the focal length f after learning for the subject distance DV+
I゛ is f+' = f++ Δ f L/ (1+DVll
) −■, and the focal length f1° and ° after learning for the subject distance DV+−+ is f+−+′ = fl−+ + Δf L/ (2−D
VII) = ■, these values are stored in the ROM, and the zoom program line is changed.

Returning to the flowchart in FIG. 39, step (0-54)
Continue the explanation from 5). In step (0-545),
The above deviation △fL is calculated as Δf L-(fe-fcp)/n-■
It has already been read out (0- in Figure 39).
750. 0-755) Focal length f+x before learning
=f+.

and hx=L+1, the focal length f, x' after learning for the subject distance DV+ is f+x'=f+x+Δ fL/ (1+DVe)
-...■, and the focal length f28゛ after learning for the subject distance DV+-+ is f2X' ” f2X+△f L/ (2-DVII)
”'■ (Steps 0-550.0
-555). By the way, in the zoom program line, as the subject distance increases, the focal length also increases, but as a result of learning, this relationship is reversed (no longer monotonically increasing).
, the photographing magnification may suddenly change due to changes in the subject distance, giving the photographer a sense of discomfort. Therefore, step (0-
565) to (0-585), processing is performed so that such a reversal of the relationship between the subject distance and the focal length does not occur.

That is, first, in step (0-565), subject distance DV+-+G-: corresponding focal length fllX is set to E, 2P
Read this value f from the ROM. and flX', and if feX≦f1×', then step (0-58
If f a x > f + 2'', set flx'=f, x and proceed to step (0-580) (step 0-580).
570.0-575). At step (0-580) f
ly'' and f2x', if fix'≦f2×'', proceed directly to step (0-590) A, and if f, 8゛-f2x', set f2x'=f+x' and step (0-590) Proceed to (Step 0-
580.0-585) , , and step (0-5
90), fix' obtained in this way is Dv+t
It writes and stores it in the E2FROM as an address, and in the next step (0-595), it writes f2x" in the E2FROM with the DV country as an address and stores it, and then returns.

Next, the subroutine for AE calculation in the auto-depth card will be explained with reference to the flowchart of FIG. 41.

As already mentioned, this auto-depth card is a card whose purpose is to take a photograph in which everything from the subject, such as a person, to the background is in focus. In order to achieve the purpose of this card, first, an aperture value that makes the depth of field range from the current subject position to the head position is calculated using the following formula.

F=Lp/(2・KEL・α・δ) ・・・■
However, Lp: current extension amount KEL of the AF lens, conversion coefficient α for converting the defocus amount into drive amount, δ: constant related to depth. The aperture value F is an aperture value that provides a depth of field that covers up to the head position when the AF lens is placed at a position that is half the current extension amount (Lp) from the (1) position.

In the flowchart of FIG. 41, the aperture value F is obtained in steps (0-624), and the value expressed in the Apex system is set as AVDEP (steps 0-626).
. Then, based on this value, the amount to shift the AF lens is calculated and the lens drive is controlled so that the depth of field range covers from the position ■ to the current subject position.
This will be discussed later.

In the above equation 0, Lp is O when the subject is at infinity, and increases in value as the distance to the subject becomes shorter.

That is, when the subject is at infinity, the depth of field is large and there is no need to shift the AF lens, so F=O. On the other hand, as the subject gets closer, the AF lens must be moved more to bring the background into focus, and the F value increases.

However, in reality, there is a limit to the range of permissible aperture values, so if the AVDEP obtained as above is not yet the maximum aperture value AVs of the lens, then AVDEP=AVe, and the maximum aperture value is AVmax. AVDEP when large
= AVmaX (steps 0-628 to 0-8
34).

Then, in the next step (0-636), a shutter speed reference value TVp for camera shake determination is calculated using the following equation.

zFz=16X log2fo150+56
-(DTVF-(ZFZ/2+16)/8
−・■ However, fp=focal length of the lens [mm]. The longer the focal length, the more likely it is that camera shake will occur.
In the above formula, if the focal length becomes longer, the standard shutter speed T
VF is now faster.

If the reference value of the shutter speed (reference value for camera shake judgment) determined in this way, TVF exceeds the predetermined value, (T
Vp>8) and TVF=8 (steps 0-640.
0-645), this is to prevent a camera shake warning from being issued when the shutter speed becomes faster than a certain level.

Next, from photometric brightness (main subject brightness) BVs to exposure value E
Calculate VS (step 0-650). Whether or not this exposure value EVS exceeds the control limit (AVmax
+ exceeds TVmax or AV, + TVmi
(step 0-655.0-6)
65) When the exposure value EVs exceeds the control limit value, limit values are set as the control shutter speed TVC and the control aperture value AVc (steps 0-660.0-670).

As a result of the above judgment, if the exposure value EVs does not exceed the control limit, based on the AE program line shown in FIG.
In steps ((11-675) to (0-740)), the control aperture value AVc and the control shutter speed TVC are calculated.

That is, first, when the aperture value is AV"AVs, the shutter speed TV"'EVs AV@ is determined, and it is determined whether or not this shutter speed TV is less than or equal to the reference value TVF for camera shake determination (steps 0-675.0 -680). As a result of this determination, when TV≦TVF, proceed to AVc=AVs TVc = TV toshite step (0-745), and when TV>TVF, set the aperture value AV to AV-EVS TVF, and this AV is Aperture value (from current subject)
Aperture value to make the depth of field range up to the position) AV
It is determined whether it is less than or equal to DEP (step 0-695).

As a result of this determination, when AV≦AVDEP, priority is given to avoiding camera shake, and in order to narrow down the aperture as much as possible to obtain depth of field, step 700) and step (0-745) are performed. ).

In contrast, when AV > AVDEP, the effect is the same even if you close down the aperture to more than AVDEP, so the aperture value AV
Find AV based on the line (see Figure 42) that increases shutter speed TV and shutter speed TV at the same rate (step 0
-705). Then, the obtained AV is the maximum aperture value AVma
Step 0-710), AV>
When AVmax, AVc = AVmax TVc = EVs - AVmax and step C174, 0), step (0-745
). On the other hand, when AV≦AVmay, the control aperture value AVc is set to AVc''AV, TV=EVs AV, and it is determined whether the TV is less than or equal to the maximum shutter speed TVmax (steps 715 to 0-725). When TV≦TVmax, set TVc”TV and proceed to step (0-745), and TV>TVm
ax, set TVc=TVmax, and recalculate the control aperture value AVc by AVc-EVs TVmax (steps 0-725 to 0-735).
), proceed to step (0-745).

Exposure control is performed on the body side based on the control aperture value AVc and control shutter speed TVc determined as above, but in addition, the depth of field range is from position (1) to the current subject position. The lens drive control for shifting the AF lens is also performed on the body side. This lens drive control will be explained with reference to Fig. 43. In this figure, the X mark indicates the lens position ( or the position of the main subject that is in focus at that lens position), and the solid line with an arrow indicates the depth of field range.As shown in the figure, the control aperture value AVe is AVDEP
In the following cases, the depth of field range is narrower and closer than the depth of field range corresponding to AVDEP, so the lens drive is controlled so that the main subject is located at the front within the depth of field. do. Note that at this time, the range indicated by the dotted line with an arrow is out of focus. On the other hand, when the control aperture value AVc exceeds AVDEP, the range of depth of field becomes closer overall and wider than the range of depth of field corresponding to AVDEP. Therefore, the lens position is A
The lens drive is controlled so as to be at the position determined by VDEP (a lens position such that the depth of field ranges from the main subject to the position ■ when the aperture value is AVDEP). At this time, the focus will be on position (1).

Returning to the flowchart in Figure 41, step (0-74)
Continue the explanation from 5). After step (0-745), calculations (APZ calculations) for determining the focal length fCD corresponding to the subject distance are performed based on the zoom program line shown in FIG. 44.

That is, first, the integer part DV+ of the subject distance DV (distance information expressed in logarithm) is taken out, and this integer part DV+
Access the table in the ROM using the address as the address, read out the focal length f+x (logarithmic value), and read out the integer part D.
An integer DV+ that is 1 greater than V+. , and read out the focal length f2x (logarithmic value) in the same way (
Steps 0-745 to 0-755). Next, take out the fractional part DVs of the subject distance DV and calculate the subject distance (DV)
The focal length fcn corresponding to fcn=Lx+(f2x fix)XDV[l...
Obtain from @ (steps 0-760.0-765). Next, in step (0-770), it is determined whether the camera's attitude is vertical or not. Therefore, it adds logl, 3 to fan) and returns (step 0-775).

In addition, the values of flX and f2X used in the calculation of the above formula 0 are as follows:
This reflects the results of learning by the learning subroutine (see steps 0-590.0-595 in Figure 39).
.

Therefore, the learning result is also reflected in the focal length fCD found above. However, changes in the zoom program line (values of Lx, f2x) due to learning are limited to the learning range shown in FIG. 44.

[2゜3.3] Portrait Card A portrait card is a card suitable for taking portraits of people. When you attach this card to your camera and take a picture, you can calculate the size of the person based on the magnification. The camera is controlled to determine the appropriate aperture value, and the photograph is taken with a depth of field that corresponds to the size of the person. The operation of this card will be explained below.

When this portrait card is attached to the camera, the fourth
When the reset routine shown in Figure 5 is executed and a signal is sent from the camera to the terminal (C3CD) of this card that changes from the 11 Lo, IT level to the 'High' level, the interrupt routine shown in Figure 46 is executed. The processing contents of these reset routines and interrupt routines are the same as the auto depth card reset routine (35th
(Fig. 36) and the interrupt routine (Fig. 36), so a description thereof will be omitted.

Regarding the data setting subroutine shown in FIG. 47, in the learning subroutine (FIG. 49) called from this subroutine, in determining whether or not the focal length and imaging magnification should be learned (FIG. 48), Learnable focal length fB range.

and the range of imaging magnification β for learning is 35≦f, respectively.
, ≦300 1/10≦β≦1/80. The other parts of the data setting subroutine (FIGS. 47 to 49) are the same as those for the auto-depth card (FIGS. 37 to 39), so their explanation will be omitted.

The AE calculation subroutine will be explained below with reference to FIG.

When the subroutine is called, first step (P
-624), the focal length f of the lens (the current focal length input from the camera side in step P-53 in Figure 46) is 5.
It is determined whether or not it is 0 mm or more, and based on this determination result, a reference value TVH of the shutter speed for determining camera shake is determined. In other words, when f is 250 mm, TV
Calculate H (step P-626).

zFz=16X1. og2fp150+56
-@TV+=1.25X(zFz/2 56)/16+
5.875・”@Where, f,: Focal length of the lens [mm].The longer the focal length, the more likely it is that camera shake will occur even at a faster shutter speed, so in the above equation, the longer the focal length, the faster the TVH. On the other hand, in order to issue a warning if the shutter speed becomes extremely slow even with a wide-angle lens, when f<50 mm, TVH is calculated using the following formula (step P-628).

zFz= 16X log2fp150+56
...■TV, = 1.125X (zFz/2
-56)/16+ 5.875- @' However, f: focal length of the lens [mm].

Next, in step (1''630), the photographing magnification β is set to 1.
/100 or not, and if β≧1100, calculate the aperture value AVβ from the photographing magnification β based on the program line in Fig. 52, set AV = AVβ, and go to step (P-670). Proceed (Step P-
632~P-634,). The program line in FIG. 52 is a program line that provides the relationship between the photographing magnification β and the aperture value AVβ, and the corresponding aperture value AVβ may be written and stored in the E2FROM or the like using the photographing magnification β as an address.

On the other hand, when β < 1/100, the main subject is small and difficult to distinguish from the background, so the aperture value AVx is made independent of the shooting magnification β, and the value of the aperture value AVx is set to the open aperture value Av.
Set as follows according to Il (Step P-636
~P-665).

When AVll<3 AVx””33 ≦AVs
< 3.5 (7) When AVx=AV++3.5≦A
When Va<4 ('), AVX=44≦AVs
(D Toki AVx = AVs) By setting the lens in this way, the lens with a small open F number is apertured a little, so that the depth of field is a little deeper and the background is slightly blurred.

The aperture value AV8 obtained as above is the aperture value that should be set when taking pictures using a portrait card, but in reality, it takes into account the control limits of the aperture value and shutter speed, as well as camera shake. Then, the control aperture value AVc is determined together with the control shutter speed TVc.

Below, this controlled shutter speed TVc and controlled aperture value AV
The procedure for calculating c will be explained.

First, in step (P-670), the exposure value EVS is determined from EVs "" BVs + SV, and it is determined whether the exposure value EVs exceeds the control limit (Steps P-675, P-685), the exposure value EV
When s exceeds the control limit value, the control shutter speed T
V. and a limit value is set as the control aperture value AVc. That is, the exposure value EVs is equal to the minimum control value AVll + TVmi
If n or less, AVc = AVe TVc = TVmin (step P-680), maximum control value AVmax
+ TVmax, set AVc = AVmax TVc = TVmax (step p-e90).

On the other hand, in the step (P-675), the exposure value EV
If it is determined that s is within the control range, the shutter speed TV when the aperture value is set to the open aperture value AVe = EVs - A
Vs is determined, and it is determined whether this shutter speed TV exceeds the reference value TVH for camera shake determination (step P
-700). As a result of this judgment, if TV≦TVH, A
Vc"AVa TVc"TV, and the shutter speed is made as fast as possible (step P-705).

On the other hand, when TV>TVH, the aperture value AV when the shutter speed is the reference value for camera shake detection = EVS TV
H is determined, and it is determined whether this aperture value AV is greater than or equal to the aperture value AVX determined from the aforementioned program line or the like (step P-715). As a result of this determination, if AV<AVx, the control aperture value AVc is set as close to AVx as possible while avoiding camera shake. , set the aperture value to AVx
Find the shutter speed TV"EVs AVx, and this shutter speed TV is the maximum shutter speed T.
It is determined whether or not it is greater than or equal to Vmax, and if TV<TVmax, AVc"AVx TVc"TV is set, and if TV≧TVmax, AVc=EVs-TVmax TVc=TVmax is set (steps P-725 to P-740).

With the above, the control aperture value AVc and the control shutter speed TVc
is determined, and then APZ after step (P-745)
Proceed to the calculation process, which is explained in the case of an auto-depth card (steps 0-745 to 0-775 in Figure 41).
), so the explanation will be omitted. Note that the zoom program line in the case of a portrait card is as shown in FIG. As with the auto-depth card, the zoom program line of this card can be changed during learning within the learning range shown in Figure 51, and the focal length f determined by APZ calculation.
The CD will also reflect the results of your learning.

[3] Summary As explained above, according to this embodiment, when the learning mode is set to ON mode by the learning mode switch (S3), the release switch (S2)
When is turned on (step S-470 in FIG. 29), the microcomputer (μC3) in the card automatically learns about zooming. For example, when using a sports card, the learning result is stored in the card's built-in E2F ROM as a deviation △f from the original zoom program line, and the learning mode is set to ON mode. When the release switch (S2) is turned on while the lens is in the zoom position, the deviation Δf is changed based on the amount of change Δf in the focal length due to manual zooming (steps S-545 to S-545 in FIG. 32). S-555
).

Here, the amount of change in focal length Δf1 is the actual focal length fB of the camera (the latest focal length at the time of shooting) and the focal length f determined by the card. , is the difference fsfcn (actually it is a ratio, but it is a difference because the focal length is expressed logarithmically), and the focal length fCD is the subject distance DV (the second This is the focal length associated with step #1137 in Figure 20 (
Step S-830-8-870 of FIG. 30). The deviation Δf obtained in this way is then used when calculating the focal length using the card (step S-860 in Fig. 30), so APZ zooming is performed after learning the original zoom program line. It will be carried out based on a line shifted entirely by the deviation △f,
Learning outcomes are reflected.

As mentioned above, when the learning mode is set to ON mode, learning about zooming (change of deviation △f)
However, if the learning mode is set to OFF mode by the learning mode switch (S3) (steps S-460 to S-465 in FIG. 29), zooming will not be possible even if the release switch ($2) is turned on. Learning about (
(change of deviation Δf) is not performed (step S-500 in FIG. 32). Further, a limit is imposed on the learning range for this zooming, and learning stops outside the predetermined learning range. That is, before changing the deviation Δf based on the amount of change Δf1 in focal length due to manual operation,
It is determined whether the actual focal length fB of the camera (the latest focal length at the time of shooting) is within a predetermined range (step S-530 in FIG. 32, step S-605 in FIG. 33), and The deviation Δf is changed only when it is within the range (flag LRF=0) (step S-53 in FIG. 32).
5 to S-555). This results in a too large deviation (f
c, and fa) is different from the sports scene assumed in this embodiment, and changing the zoom program line based on this large deviation is not recommended in this embodiment. As this is not the intention of
No learning occurs.

On the other hand, if the release switch (S2) is turned on while the learning mode is set to reset mode by the learning mode switch (S3) (steps S-460 to S-465 in FIG. 29), the memory card built-in E2 being
The deviation Δf stored in FROM is reset (Δf
=0) Learning content is deleted (step S- in Figure 32)
505 to S-510). And even in this mode,
Even if the release switch (S2) is turned on, learning about zooming (change of deviation Δf) is not performed. In other words, the reset mode of this embodiment can be considered as a learning stop mode that involves a reset operation of learning contents.

In this way, according to this embodiment, learning-E-
By operating the switch (S3), the learning function regarding zooming can be stopped or the learning contents can be deleted. In addition, the sports card has information indicating the range to be learned (a procedure for determining whether it is within the learning range), and based on this information, learning about zooming will automatically stop outside the predetermined learning range. . In other words, the automatic learning mode and learning stop mode are automatically switched depending on the information contained in the sports card.

Next, consider the case of using an auto-depth card. In this case, unlike the case of sports cards,
The learning outcomes will be reflected in the Zoom program line itself. In other words, data representing the zoom program line is stored in the E2FROM built into the card (memorizing the focal length for each integer subject distance), and when the learning mode is set to ON mode. When the release switch (S2) is turned on (step 0-470 in FIG. 37), the data representing the zoom program line is changed to the amount of change in focal length L=f due to manual zooming.
The zoom program line modified in this way is then modified based on the focal length f. Because it is used when calculating (#I41
Steps 0-745 to 0-775 in the figure), APZ zooming is performed based on the zoom program line after the change, and the learning results are reflected. In addition,
Learning about zooming when using a portrait card is also the same as when using an auto-depth card.

Furthermore, according to this embodiment, even when using an auto-depth card or a portrait card, the learning mode switch (
By operating $3), you can stop learning about zooming or delete the learning content. However, learning in this case corresponds to changing the data representing the zoom program line stored in the E2F ROM in the card, as described above. The learning contents reset operation corresponds to returning the data representing the zoom program line stored in the E2FROM to the initial state data in which no zooming learning has been performed (step 0- in FIG. 39). 505-0
-510 and steps P-505 to P-51 in Figure 49
0).

In addition to the function of stopping learning or deleting learning content using the learning mode switch (S3) as mentioned above, auto depth cards and portrait cards are also used based on the information held by those cards, similar to sports cards. It also has a function to automatically switch between automatic learning mode and learning stop mode.

In other words, auto-depth cards and portrait cards have information indicating the range to be learned (a procedure for determining whether or not it is within the learning range) (Figures 38 and 48), and based on this information, a predetermined Outside the learning range (flag LRF=1
) will automatically stop learning about zooming (
Step o-535 and 49rI of FIG. 39! Jnostep P-535). *) If the shooting is considered to be too special to use an auto-depth card or a portrait card, no learning will be performed.

Incidentally, in this embodiment, the functions are shared between the microcomputer in the camera body and the microcomputer in the card, but it may be configured such that all functions are realized by the microcomputer in the camera body. Further, in this embodiment, the zoom program line and data related to learning are stored in the E2PR○M in the card, but they may be stored in the RAM or E2FROM in the camera body.

In the explanation of the embodiments above, a single-lens reflex camera was used as an example, but the automatic learning function for zooming described therein is not applicable to cameras that have a separate finder optical system, such as lens-shutter cameras. The same can be achieved with a camera. In addition, it is not limited to film cameras that use film as a shooting medium, but also CCD and MOS-
A similar function can also be realized in an electronic still camera that uses an IC as a photographic medium.

As explained above, according to the camera of the present invention, the control data is changed based on the amount of change in the operation variable when a predetermined operation is manually performed to set the shooting conditions, that is, the shooting conditions are changed. (predetermined operation), but it can also be set not to perform this learning by switching to the learning stop mode using the mode switching means. Further, by providing a learning reset means, it is possible to erase the learned content and return to an initial state in which no learning has been performed. Therefore, in order to avoid learning extreme shooting conditions in special shooting situations, learning stop mode can be set, and if the photographer accidentally learns shooting conditions that were not intended, learning can be done using the learning reset method. Contents can be erased. This reduces the need for manual operations for setting photographing conditions in numerical photographic situations, and can be expected to have the effect of keeping the camera in an easy-to-use state.

Note that if the above learning mode is configured to be switched based on information from sources other than the camera body, for example, information from an IC card attached to the camera, the need for manual mode switching will be reduced. Furthermore, the operability of the camera is improved.

(Margin below)

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram showing a camera system embodying the present invention, FIG. 2(a) is a diagram showing the external configuration of the body of the camera system, and FIG. 2(b) is a diagram showing the body from the rear. FIG. 2(c) is an enlarged view of the grip portion of the body, and FIG. 2(d) is a diagram showing the external configuration of the interchangeable lens attached to the body. FIG. 3 is a circuit diagram showing an in-body circuit built into the body, and FIG. 4 is a circuit diagram showing an in-lens circuit built into the interchangeable lens. FIG. 5 is a flowchart showing a reset routine of the in-body microcomputer in the camera system;
The figure is a flowchart showing the AF lens renormalization subroutine, Figure 7 is a flowchart showing the counter interrupt ■ routine that controls the drive of the AF lens, and Figure 8 is a flowchart showing the timer interrupt ■ routine that controls the drive of the AF lens. , FIG. 9 is a flowchart showing the AF lens stop subroutine, FIG. 10 is a flowchart showing the eye proximity detection subroutine, FIG. 11 is a flowchart showing the lens communication subroutine, and FIG. 12 is a flowchart showing the subroutine for lens communication.
13 is a flowchart showing the routine of timer interrupt I for detecting eye proximity at predetermined time intervals, FIG. 13 is a flowchart showing the subroutine of 5IOH, and FIG.
Figure 15 shows the display contents of the display section on the body.
The figure is a flowchart showing the subroutine for lens communication (2), FIGS.
FIG. 1 is a flowchart showing a subroutine for driving the AF lens, FIG. 22 is a flowchart showing a subroutine for exposure calculation, and FIG. 23 is a flowchart showing a subroutine for card control determination. FIG. 24 is a flowchart showing a reset routine for the microcomputer in the lens in the camera system, FIG. 25 is a flowchart showing a C8 interrupt routine, and FIG. 26 is a flowchart showing a PZ subroutine that controls the drive of the zoom lens group. It is. FIG. 27 is a flowchart showing a reset routine of the microcomputer in the sports card attached to the body of the camera system, FIG. 28 is a flowchart showing the interrupt routine for card communication in the sports card, and FIG. is a flowchart showing a data setting subroutine in a sports card, No. 30.
Figure 31 is a flowchart showing an AE calculation subroutine for sports cards, Figure 31 is a diagram showing an example of an AE program line for sports cards, Figure 32 is a flowchart showing a learning subroutine for sports cards, and Figure 33 is a flowchart showing the learning subroutine for sports cards. FIG. 34 is a flowchart showing a subroutine LR for determining whether or not it is within the learning range of a sports card. FIG. 34 is a diagram showing a zoom program line in a sports card. FIG. 35 is a flowchart showing a reset routine of the microcomputer in the auto-depth card attached to the body of the camera system, and FIG. 36 is a flowchart showing the interrupt routine for card communication in the auto-depth card. The figure is a flowchart showing a subroutine for setting data in the auto-depth card, and FIG. 38 is the subroutine LR for determining whether the focal length and imaging magnification are within the learning range of the auto-depth card.
FIG. 39 is a flowchart showing the learning subroutine for auto depth cards, FIG. 40 is a diagram for explaining the learning method for auto depth cards and portrait cards, and FIG. 41 is a flow chart showing the learning subroutine for auto depth cards. A flowchart showing the calculation subroutine, Figure 42 is a diagram showing the AE program line for the auto-depth card, and Figure 43 is a flowchart showing the AE program line for the auto-depth card. FIG. 44, which is a diagram for explaining the drive control of the AF lens, is a diagram showing the zoom program line in the auto-depth card. FIG. 45 is a flowchart showing a reset routine of the microcomputer in the portrait card attached to the body of the camera system, and FIG. 46 is a flowchart showing the interrupt routine for card communication in the portrait card. Fig. 47 is a flowchart showing a subroutine for setting data in a portrait card, and Fig. 48 is a subroutine LR for determining whether the focal length and photographing magnification are within the learning range of the portrait card.
FIG. 49 is a flowchart showing a subroutine for learning in a portrait card. FIG. 50 is a flowchart showing a subroutine for AE calculation in a portrait card. FIG. 51 is a diagram showing a zoom program line in a portrait card. 5
FIG. 2 is a diagram showing a program line that provides the relationship between photographic magnification and aperture value in a portrait card. (1)...Body control section. (2) ... Distance measuring section. (6)...Lens control section. (7)...Zoom lens group drive control section. (10)...Zoom operation ring operation detection means. (12)...Release button. (19)...Learning mode key. (24)...Slider for switching between single shooting mode/continuous shooting mode. (35)...Card control unit. (80)...Zoom operation ring. (L,)...Zoom lens group. (LF')... Focus adjustment lens group (AF lens). (BD)...Camera body. (LE)...Interchangeable lens. (μC1)...Microcomputer inside the hotel. (μC2)...Microcomputer inside the lens. (μC3)...Microcontroller inside the card. (S2)...Release switch. (SS)...Learning mode switch. (SS.)...Single shooting mode/continuous shooting mode changeover switch. Fig. 2 (a) Fig. 2 (b) Fig. 2 (c) Fig. 2 (d) Fig. 4 Fig. 16 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 15 Fig. 16 Fig. 17 Fig. 18 Fig. 19 Fig. 21 Fig. 1B22 Fig. 23 Fig. 25 Fig. 24 Fig. 126 Fig. 30 (Sled 2) Fig. 33 Fig. 38 Fig. 41 (Sled 2) Fig. 44 Figure 28355010020040Of [mm] Focal length Figure 48 Figure 50 (2 of f) Figure 51 3550 100 Zoo 400 f [mml Focal length

Claims (7)

[Claims] (1) In a camera that can automatically control operating variables representing the content of a predetermined operation for setting photographing conditions based on predetermined control data, when the predetermined operation is performed manually, a manipulated variable change amount detection means for detecting the amount of change in the manipulated variable due to the operation; a rewritable storage means for storing the control data; and based on the change amount detected by the manipulated variable change amount detection means, a changing means for changing the control content of the manipulated variables by rewriting the control data stored in the storage means; a mode switching means for switching the mode between an automatic learning mode and a learning stop mode; When the automatic learning mode is set by the switching means, the changing means automatically changes the control content of the manipulated variable, and when the mode switching means sets the learning stop mode. A camera comprising: a learning control means that controls the operation of the changing means so as to keep the control content of the manipulated variable constant without rewriting the control data. (2) In a camera that can automatically control operating variables representing the content of a predetermined operation for setting photographing conditions based on predetermined control data, when the predetermined operation is performed manually, a manipulated variable change amount detection means for detecting the amount of change in the manipulated variable due to the operation; a rewritable storage means for storing the control data; and based on the change amount detected by the manipulated variable change amount detection means, a changing means for changing the control content of the manipulated variable by rewriting the control data stored in the storage means; and a changing means for changing the control content of the manipulated variable by rewriting the control data stored in the storage means; A camera characterized by comprising: a learning reset means for erasing learned information about operations; (3) The device further comprises learning reset means for erasing the content learned regarding the predetermined operation by returning the control data to an initial state in which the rewriting has not been performed at all. Cameras listed in. (4) Further comprising a release means that starts a release operation when the release switch is turned on, and the changing means changes the amount of change detected by the operation variable change amount detection means when the release switch is turned on. The camera according to any one of claims 1 to 3, wherein the control content of the operation variable is changed by rewriting the control data based on the control data. (5) The camera according to claim 1 or 3, wherein the mode switching means switches the mode by manually operating a predetermined operating member. (6) The camera according to claim 1 or 3, wherein the mode switching means switches the mode based on switching information from a source other than the camera body. (7) The camera according to claim 6, wherein the camera can be equipped with an IC card having a function of controlling photographing conditions, and the switching information is provided from the IC card. .