JPH04199111A - Camera provided with automatic learning function - Google Patents

Abstract

PURPOSE:To aboid learning in a range where information detecting accuracy is bad by setting specified restriction in a learning range by a restricting means based on the variation of an operation variable when a specified operation is manually performed to set a photographing condition. CONSTITUTION:When a release switch S2 is turned on, the learning about zooming is performed by a microcomputer muC3 in a card. In the case that a sport card is used, for instance, the result of the learning is stored in an E2 PROM incorporated in the card as deviation DELTAf from the zoom program line of an original, and the deviation DELTAf is changed based on the variation DELTAf1 of the focal distance by the zooming by the manual operation. However, the restriction is set in the range of the learning about zooming, and whether or not the newest focal distance at the time of photographing by a camera is within a specified range(enclosed by a broken line) is decided before changing the deviation DELTAf; the deviation DELTAf is changed only when it is within the specified range, and the learning is not performed when the deviation is so large.

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 zooming and the like. Traditionally, our products have been cameras that can automatically set shooting conditions (shutter speed, aperture value, focal length, etc.) based on predetermined control data such as program line data. However, depending on the individuality of the photographer or the actual specific shooting scene, the shooting conditions may not be as desired by the photographer. In such cases, it is necessary to manually set the shooting conditions when shooting.
The benefits of automation will be 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 set new photographing condition 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 setting range of the shooting conditions, the accuracy of detecting information about the shooting conditions may deteriorate, and in order to increase the learning effect, it is necessary to avoid learning within such ranges. be. In addition, if you shoot under extreme shooting conditions (shutter speed, aperture value, focal length, etc.) in a special shooting situation, learning these shooting conditions may require manual operation for subsequent shots. This increases the number and makes it difficult to use. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a camera with an automatic learning function that does not perform learning in a range where the detection accuracy of information regarding photographing conditions is low or learning extreme photographic conditions in special photographic scenes. . In order to achieve the above object, in the present invention, as described in claim gJ41, the operation variable representing the content of the predetermined operation for setting the photographing conditions is In a camera that can be automatically controlled based on data, when the predetermined operation for setting shooting conditions is manually performed, operation variable change detection detects the amount of change in the operation variable due to the operation. means, rewritable storage means for storing the control data, and rewriting the control data stored by the storage means based on the amount of change detected by the manipulated variable change amount detection means. a changing means for changing the control content of the manipulated variable; and the changing means for changing the range of imaging conditions set by controlling the manipulated variable based on the control data so that it does not exceed a predetermined range set in advance. and a restriction means for restricting a change in the control content by the control device. In this case, for example, as described in the second claim, the predetermined range can be determined by setting the maximum value and/or minimum value of the manipulated variable. Further, as described in claim 3, when the camera has a zooming function, the predetermined operation for setting photographing conditions is a zooming operation, and the operation variable is a focal length. A possible configuration is that there is. As described in a fourth claim, the camera according to the third claim further comprises a subject distance detection means for detecting a subject distance, and the control data associates the subject distance with the focal length. It can be configured to be data representing a program line. According to the camera according to the first aspect of the invention, the operating variables are automatically controlled and the shooting conditions are set based on predetermined control data at the time of shooting, but the photographer can set the shooting conditions ( When it is determined that the value of the manipulated variable is inappropriate and a predetermined operation is performed manually, 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. At this time, the range of photographing conditions set by controlling the operation variables based on the rewritten control data does not exceed a predetermined range set in advance. In other words, a predetermined limit is imposed on the range of learning regarding photographing conditions. According to the camera according to the second aspect, by setting the maximum value and/or minimum value of the manipulated variable, the possible range of the manipulated variable is limited, and the range of the photographing conditions is determined in accordance with the limitation. , learning is restricted within this range. According to the camera according to the third claim, zooming is learned, and when shooting, the focal length is automatically controlled based on control data that reflects the learning results. The range in which the information is displayed is limited to a predetermined range set in advance. According to the camera according to the fourth aspect, the learning result regarding the zooming is reflected in a program line that associates a subject distance with a focal length, and when shooting, the focal length is automatically adjusted based on this program line. controlled by. At this time, since the change in the program line due to learning is limited to a predetermined range set in advance, the range in which the focal length is controlled is also correspondingly limited. (Left below) NU】1 draw

[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] In-body microcomputer software [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

[Contents of the embodiment] Hereinafter, as an embodiment of the present invention, the focal length is adjusted by a motor.
Single-lens reflex camera with interchangeable lenses
I will explain the Mera system. 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).
Input the data from the camera to the body control unit (1) and focus.
Calculate the amount of lens drive required to
The motor (Ml) is energized by the group drive control unit (3).
The focus adjustment lens group (hereinafter referred to as "AF lens")
) (LF) to automatically focus.
function, body data output section (4) and lens data
The input section (5) communicates with the lens side and connects the lens to the body.
It has the ability to operate under the control of the In addition, the
The device control unit (1) attaches an IC card (described later) to the body.
You can add that functionality by doing so. sand
Compatible with shooting genres such as sports and portraits
Various types of IC cards are available, and IC cards are
When installed, the body control section (1) outputs body data.
By the power section (31) and card data input section (32),
Can communicate with the card side. and card control
The section (35) includes a body data input section (33) and a card.
The data output section (34) communicates with the body side, and the
The aperture value and camera setting are suitable for the shooting genre handled by the IC card.
Calculate shutter speed, zoom lens focal length, etc.
Transfer to the body side. Therefore, the body control section (1)
By using these control information, each shooting
Camera control suitable for the genre can be performed. On the other hand, on the lens side, a zoom operation ring operation detection means (10)
When an operation is detected in
By energizing the motor (M3) using the control unit (7),
, drives the zoom lens group (L,) to perform zooming (hereinafter referred to as
``power zoom'') and body data
body data input section (8) and lens data output section (9).
By communicating with the camera, lens data is output to the body.
functions that operate according to data from the body.
It has the ability. "1] Hardware configuration [1.1 External configuration Next, the external configuration of the body and lens will be explained. Figure 2 (a) shows a camera body (BD) to which the present invention is applied.
Figure (b) shows the external configuration of the camera body.
(BD) is seen from the rear, and (C) shows the view from the rear.
This is an enlarged view of the lip part, and (d) of the same figure shows the camera body (
Outside of the interchangeable lens (LE) that is replaceably attached to the BD)
The structure of the parts is shown. Below are the names and functions of each part.
This will be briefly explained based on FIG. [1,1,1] Names and functions of each part in the camera body
(11) Turn the main switch (sl,) to 0N10FF.
This slider (11) is for
The camera body (BD) can operate when it is in the N position.
state, and when it is in the OFF position, the camera body
(BD) becomes inoperable. (12) is the release button, and when pressed to the first step,
The shooting preparation switch (Sl), which will be described later, is turned on, and the metering and
Start each operation of exposure calculation and AF (automatic focusing). Also
, Press the second step to release the release switch (S2, which will be described later).
is turned on and starts the exposure control operation. (13) is the IC card insertion part, and the microcomputer
Insert the IC card with a built-in computer into this slot (13).
Add functions to the camera body (BD) by
can do. (14) is the body display section, which shows the shutter speed and aperture.
Displays the value, IC card information, etc. (15) is a mount lock bin. Interchangeable lens (L
E) is attached and the mount is locked, the following
The lens attachment switch (SLE) is turned OFF, and no further
When outdoors, turn on the lens attachment switch (SLE).
ing. (16) is the AF coupler, inside the camera body (BD)
It is rotated based on the rotation of the AF motor. (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 ○N/○FF/reset of the learning mode described later.
This is the learning mode key that is operated to perform the following steps. (20) is the LED which is the light emitting part, (21) is the light receiving part
These are SPCs (silicon photocells), which are
Detects whether the photographer is looking into the viewfinder.
(hereinafter, this detection will be referred to as "eye-approach detection"). (24) is for switching between single shooting mode/continuous shooting mode.
This slider (24) is in the S position.
When it is in position C, it is in single shooting mode, and when it is in position C, it is in continuous shooting mode.
The camera enters photo mode. Here, single shooting mode means that the release button
Only one shot can be taken by pressing the button (12) in the second step.
This is the normal mode that is used, and continuous shooting mode is
While the button (12) is pressed to the second position, the
In this mode, images are taken continuously at frame-by-frame speed. The outside (2 parts) of the grip part in Figure 2 (C) is made of elastic material.
It is made of rubber and has conductive patterns inside that are insulated from each other.
horns (22a) and (22b) are provided, and the rubber
and the conductive pattern (22a) (22b).
A system (not shown) is arranged. And the grip part
By pressing the outside (23) of the conductor pattern (
22a) and (22b) are electrically connected through the conductive rubber.
This structure allows the grip to slide easily.
functions as a switch (hereinafter referred to as "grip switch J")
do. [1, 1, 2] Names and number of functions of each part in interchangeable lenses
The following describes the names and functions of each part of the interchangeable lens (LE).
I will explain. (25) is the mount lock groove, and (26) is the AF cover.
Plastic (27) is the aperture lever. camera body
When you attach an interchangeable lens (LE) to the (BD), the camera
Mount Rock Bin (15) of Di (BD) is mounted
Engage with the lock groove (25) and connect the A and F couplers on the body side.
The convex part of (16) is the concave part of the AF coupler (26) on the lens side
The rotation of the AF motor on the body side causes the AF coupler (
16) It is transmitted to the lens side via (26), and the AF lens
moves to focus. Furthermore, the lens side
The terminals (Jl) to (J8) are the terminals on the body side (J++)
~ (518) are connected. In addition, the aperture lever (1
7) engages with the aperture lever (27) on the lens side, and the button
The lens side is moved by the amount of movement of the aperture lever (17) on the D side.
The aperture lever (27) follows and moves, opening the aperture.
corresponds to the movement of the aperture lever (17) (27)
Controlled by value. (80) is the zoom operation ring, which allows you to adjust the power zoom direction and
It is rotated to specify the speed. That is, this
The zoom mode inside the interchangeable lens (LE) can be changed by rotating the lens.
(M3) to change the focal length to tele or wide direction.
can be changed in the opposite direction. [1,,2] Circuit Configuration Next, the circuit configuration of the camera system will be explained. [1, 2, 1] Structure of the internal circuit in the body Figure 3 shows the internal circuit built into the camera body (BD).
FIG. First, based on this diagram,
Explain about the road. (μC1) is a button that controls the entire camera and performs various calculations.
Internal microcomputer (hereinafter referred to as “internal microcomputer”)
”). (AFCT) is a light receiving circuit for focus detection, and
C as an integral type optical sensor for focus detection that accumulates over a certain period of time
A that processes the CD, COD drive circuit, and COD output.
/D conversion and supply to the microcontroller (μC1) in the body (data
data dump) and is equipped with a circuit to
It is connected to the in-body microcomputer (μC1). this
The focus detection light receiving circuit (AFCT) allows
Information about the amount of defocus of the existing subject can be obtained.
Ru. (LM) is a photometric circuit installed in the finder optical path.
Then, the photometric value is A/D converted and sent to the microcontroller inside the body (μ
C1) as luminance information. (DX) is the film sensitivity data set on the film container.
Read the data and send the serial to the microcontroller (μC1) inside the body.
This is a film sensitivity reading device for output. (DISPC) is displayed from the microcontroller (μC1) in the body
Input data and display control signals to display on the top of the camera body.
Display section (DISP) (Display section (14) in Figure 2)
This is a display circuit that performs a certain display. (CD) is a CD card installed in the card insertion section (13).
It is a microcomputer (hereinafter referred to as ``my card in the card'').
It has a built-in microcontroller (μC3). This IC card
The code (CD) will be explained in detail later. (EPD) is an eye proximity detection circuit that performs eye proximity detection. (LECT) is an interchangeable lens (LE) (hereinafter simply referred to as LE).
It is an internal circuit built into a lens (also called a
Provides information specific to interchangeable lenses to the microcontroller (μC1) in the body.
supply. Regarding this in-lens circuit (LECT), please refer to the following.
will be explained in detail. (Ml) is the AF motor, and the AF coupler (16) (2
6) Drives the AF lens in the interchangeable lens (LE) via
do. (MDI) operates the AF motor (Ml) based on the focus detection information.
) is a motor drive circuit that drives the microcontroller inside the body.
Forward rotation, reverse rotation, and stop are controlled by commands from (μC1)
be done. (ENC) monitors the rotation of A and F motors (Ml).
It is an encoder for controlling the internal
A pin is connected to the counter input terminal (CNT) of the microcontroller (μC1).
Output the route. The microcomputer (μC1) in the body uses this
from the infinity position to the current lens position.
Detects the amount of feed out at
Calculate the shooting distance of the subject (subject distance) from the number of pulses (CT)
put out (TVCT) is controlled by the microcomputer (μC1) inside the body.
Shutter control circuit that controls the shutter based on the signal
It is a road. (AVCT) is controlled by the microcomputer (μC1) inside the body.
This is an aperture control circuit that controls the aperture based on signals. (M2) is film winding/rewinding and exposure control mechanism
This is a motor for charging. Also, (μC
2) is based on the command from the microcomputer (μC1) inside the body.
This is a motor drive circuit that drives the motor (M2). Next, the configuration related to the power supply will be explained. (El) is the battery that powers the camera body (BD).
Ru. (Tri) is the first circuit that supplies power to part of the circuit described above.
This is a power supply transistor. (Tr2) is the hole inside the lens.
A second power supply source that supplies power for driving the arm motor.
It is a transistor and has an MO8 configuration. (DD) is the voltage supplied to the microcontroller (μC1) in the body
DC/DC converter to stabilize (Vnn)
Yes, power control terminal (PWO) is at "'High" level.
It works when . (VIID) is the in-body microcontroller (
μC1), lens internal circuit (LECT), card internal circuit
icon (μC3), film sensitivity reading circuit (DX),
and the operating power supply voltage of the display control circuit (DISPC).
Ru. (Vcc+) is the focus detection light receiving circuit (AFCT)
, and the operating power supply voltage of the photometry circuit (LM).
Under the control of the signal output from the source control terminal (PWI)
From the power supply battery (El) through the power supply transistor (Tri)
It is supplied as follows. (VCC2) is the zoom control inside the lens.
This is the operating power supply voltage of the motor (M3), and the power supply control terminal (P
Under the control of the signal output from W2), the power supply battery (El
) is supplied via the power supply transistor (Tr2)
. (Vccs) is the eyepiece detection circuit (EPD),
shutter drive circuit (MDI), shutter control circuit (TV
CT), aperture control circuit (AVct), and mode
This is the operating power supply voltage of the motor drive circuit (μC2), and the power supply voltage is
Supplied directly from (El). (Dl) to (D3) are DC/DC converters (DD)
When the operation is stopped, the voltage is lower than (VDD)
Apply voltage to the microcontroller (μC1) in the body and reduce power consumption.
This is a group of diodes to reduce the This low voltage
, the minimum power supply voltage that the microcontroller (μC1) in the body can operate.
The DC/DC converter (DD) is set to
When the operation is stopped, the internal microcontroller (μC1
) is operational. (GNDI) is the ground line of the low power consumption section,
Between the lens and the body is via the terminal (J+v) (Jv)
It is connected. Inside the body, there is an analog section and a digital section.
It is necessary to have separate ground lines for the ground lines, but for convenience,
, is shown as one in the drawing. (GND2) is the ground line of the large power consumption section,
Connect between the lens and the body via terminals (J+e) (JJ).
It is continued. Next, the switches will be explained. (ScD) when an IC card (CD) is installed.
To enable/disable functions using an IC card (CD)
It is a normally open button switch for changing the
It is turned on when the card key (18) is pressed. (SGR) is the grip that turns on when you hold the grip.
It is a push switch. (Sl) is the first press of the release button (12)
This is the shooting preparation switch that is turned on. This switch (
$1) is CN or the above grip switch (SGR) is
When turned ON, an interrupt from the microcontroller (μC1) in the body occurs.
When an interrupt signal is input to the terminal (INTI), photometry
Standards required for shooting such as distance measurement and AF operation (automatic focusing operation)
Preparatory actions are taken. (mixed) is the slider (
11) is in the ON position, it is turned ON, and it is in the OFF position.
This is the main switch that turns OFF when the (PGI) when the switch (So) changes from ON to OFF or
Low” level pulse every time it changes from OFF to ON
This is a pulse generator that outputs . This pulse generator (P
The output of CI) is the interrupt of the microcontroller (μC1) in the body.
The interrupt signal is input to the read terminal (INT2) as an interrupt signal. (S2) is the second press of the release button (12)
This is the release switch that is turned on. 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
), the camera switches to single-shot mode, and switches to 0FF (position C).
Then the camera enters continuous shooting mode. (S3) performs 0N10FF/reset of learning mode.
This is a normally open learning mode switch for learning. (S)IL) indicates that the camera orientation is vertical or horizontal.
This is a switch for detection, and when it is horizontal, it is ON1 when it is vertical.
The time is OFF. (SRE I) has a battery (El) in the camera body (BD).
) is installed, the battery installation detection switch turns off when the battery is installed.
It is Chi. When the battery (El) is installed, the battery installation detection switch is displayed.
When the switch (SREI) turns OFF, the resistor (R1)
The capacitor (C1) is charged through the microcontroller in the body.
The reset terminal (REI) of the input terminal (μC1) is at “Low” level.
The level changes from low to high. This results in
The microcomputer (μC1) in the body uses the reset routine described below.
Execute. (SRE3) when the IC card (CD) is installed
This is a card attachment detection switch that turns OFF. IC car
CD is inserted and the switch (SRε3) is turned OFF.
When it reaches F, as before, the microcomputer (μC3) in the card
Reset terminal (RE3) goes from "Low" level to °'
The level changes to High'°, and the microcomputer (μC) inside the card
3) -h<reset. Next, we will explain the configuration for serial data communication.
Ru. Photometry circuit (LM), film sensitivity reading circuit (DX)
, display control circuit (DISPC), and inside the card
The microcontroller (μC3) has serial input (SIN),
Serial output (SOUT). and serial clock (SCK) signal lines.
Communicate data serially with the microcontroller (μC1) inside the body.
Do this. Then, the communication with the in-body microcomputer (μC1)
The communication target is the chip select terminal (C8LM) (C8D
X) (C8DISP) Selected by (C8CD)
. In other words, when the terminal (C8LM) is at “Low” level
The photometric circuit (LM) is selected and the terminal (C8DX) is
When the level is “Low”, the film sensitivity reading circuit (
DX) is selected and the terminal (C8DISP) is set to Low” level.
When the bell is on, the display control circuit (DISPC) is selected.
, when the terminal (C3CD) is at “Low” level, the card
The internal microcomputer (μC3) is selected. Furthermore, three signal lines for serial communication (SIN)
(SOLIT) (SCK) is the terminal (Jl6) (J6
); (Jl4) (J4); (Jl6) via (J6)
and is connected to the lens internal circuit (LECT).
When selecting the internal circuit (LECT) as a communication target
Even if the terminal (C8LE) is set to l LO, II level,
This signal is passed through the terminals (Js) (Jl3).
The signal is transmitted to the intra-lens circuit (IJcv). [1, 2, 2 In addition to the number of lens internal circuits, the lens internal circuit (LECT) is calculated based on Fig. 4.
I will explain. Figure 4 shows the built-in interchangeable lens (LE).
FIG. 2 is a circuit diagram of a lens internal circuit (LECT). In the figure, (
μC2) is a zoom mode built into an interchangeable lens (LE).
(M3) control and data exchange with the camera body (BD)
In-lens microphone for controlling communications, mode settings, etc.
Microcomputer (hereinafter referred to as "in-lens microcomputer")
It is. Here, the terminal group (J
, ) to (J8), (J,) is a zoom
Relay the power supply voltage (VCC2) for motor drive from the body side.
The power supply terminal (JR) is for supplying power to the lens side.
Is the power supply voltage (VDD) other than for motor drive connected to the body side?
(Js) is the power supply terminal for supplying data from the lens to the lens side.
(Jl) is the input/output terminal for the signal indicating the data communication request.
Clock that inputs the clock for data communication from the body side
Terminal (Js) is the series that inputs data from the body side.
Al input terminal (J6) outputs data to the body side
The serial output terminal (J7) is used for circuits other than the motor drive circuit.
The ground terminal of the circuit (JR) is the ground terminal of the motor drive circuit.
This is a land terminal. (R8IC) has a voltage (VDD) supplied from the body.
The voltage has dropped below the normal operating voltage of the microcomputer (μC2) inside the lens.
When the microcomputer (μC2) inside the lens is reset,
This is a reset IC for (R2) (C2)
is to reset the microcomputer (μC2) inside the lens.
This is a reset resistor and capacitor. (RE2) is the reset terminal of the microcomputer (μC2) inside the lens.
It is a child and a power supply to drive the circuit inside the lens from the body.
voltage (V[ll+) is supplied, and the resistor (R2) and capacitor
Is the terminal (RE) at 'Low' level due to the sensor (C2)?
When the level changes from “High” to “High,” the microcomputer inside the lens (
μC2) performs a reset operation. (ZVEN) is linked to the aforementioned zoom operation ring (80).
This is a zoom speed encoder that can be used when power zooming.
sets the power zoom speed and direction. (ZMEN) indicates the absolute position of the zoom ring.
It is a mu encoder. (M3) is for driving the zoom lens group (zoom ring)
This is a zoom motor. Zoom with this zoom motor
By driving the lens group, the focus is maintained without changing the position of the image point.
Point distance can be changed. (Mn2) is the motor for driving the zoom motor (M3).
It is a data drive circuit, and is connected from the microcomputer (μC2) inside the lens.
Control signal indicating the given motor drive direction and drive speed
The rotation of the zoom motor (M3) is controlled accordingly. Also
, motor stop given from the microcomputer (μC2) in the lens
The zoom motor (M3
) and stop applying voltage. (D5) is a diode for preventing backflow, and
Power supply voltage (V) for driving the zoom motor supplied to the lens
CC2) is supplied to the motor drive circuit (Mn2) and
, preventing backflow from one power source to the other. Next, I will explain the switches. (SLE) is a lens attachment detection switch.
(LE) is attached to the camera body (BD) and mounted.
It turns OFF when locked. In other words, the interchangeable lens
When the lens (LE) is removed from the camera body (BD)
, the switch (SLE) is turned on, and the capacitor (C2
) are shorted. This allows the capacitor (C2
) is discharged and the microcomputer inside the lens
The terminal (RE2) of (μC2) 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 (VIID).
is determined by the resistor (R2) and capacitor (C2)
After a predetermined time, the terminal (RE2) changes to the “old gh” level.
As mentioned above, the microcomputer (μC2) inside the lens
Perform a reset operation. This completes the explanation of the hardware of this example.
, Next, we will explain the software. [2] Software configuration [2,1] Software for the microcomputer in the body
This section explains the software of the internal microcontroller (μC1).
Ru. When the battery (El) is attached to the camera body (BD),
In the internal circuit shown in Figure 3, battery attachment is detected.
The switch (SREI) is turned OFF and the reset controller is turned off.
The capacitor (C1) is charged through the resistor (R1), and the capacitor (C1) is charged through the resistor (R1).
Resetting the microcomputer (μC1) in the body that controls the entire camera
From "Low" level to °'High level on the cut terminal (REI)
A reset signal that changes to h” level is input. By inputting this reset signal, the internal microcomputer (μ
C1) generates the clock using internal hardware.
Start and operate the DC/DC converter (DD)
and is supplied with a driveable voltage (Vnn), as shown in Fig. 5.
Execute the reset routine shown in In addition, in the sleeve state (stopped state) described later, the button is
The clock of the internal microcomputer (μC1) stops, and the DC
/DC converter (DD) has also stopped working,
Control by interrupt from this sleeve state is as described above.
In the same way as when the battery is installed, the microcomputer (μC1) inside the body
Internal hardware provides clock generation and DC/
Start operation of the DC converter (DD). In the reset routine shown in Figure 5, first all interrupts are
and reset various boats and registers (
Steps #5 to #10). And step (#20)
to determine whether the main switch (S,) is turned on or not.
to be determined. Also, the main switch (island) changes from ON to OFF.
or from OFF to ON, the main
An interrupt (SMINT) caused by a switch operation occurs and the
The process is executed from step (#20). The main switch (Swa) is turned on in step (#20).
If it is determined that the
and a truck for supplying power to each circuit and lens side.
In order to turn on the register (Tri) (Tr2), the power supply is
Connect the output ports (PWI) (PN2), which are control terminals, respectively.
Set to old ghl+ level (steps #25 to #35)
). Next, in step (#40), the AF lens renormalization sub
Run the routine. This subroutine is shown in Figure 6.
. When the subroutine is called, first step (
#150) executes the lens communication subroutine (2). Lens communication 1 is for various communication modes between the body and lens.
Input the data from the lens explained in this example.
This is the communication in the communication mode ①. Lens communication■
The subroutine is shown in FIG. The same subroutine is called
When the message is sent out, first, the communication mode must be mode ■.
Set the data indicating 'Lo' and set the terminal (C3LE) to
It is known that data is communicated to the lens as w” level.
(Step #4.00. #402). And then
Step (#405) for 2-byte serial communication (Serial
file input/output). In this serial communication, the body and lens communicate with each other.
While serially outputting data to the
Incoming data is input serially at the same time. The first byte is
, outputs data indicating the type of body from the body. child
When , the lens outputs meaningless data F F H (attached).
) is output, and the lens and body are
Each inputs the data sent from the other party. 2ba
The second feature is that the lens outputs data indicating the type of lens.
do. At this time, meaningless data FF is output from the body.
The lens and body are each sent from the other party.
Enter data. Then, the communication mode with the lens is
In order to indicate that the mode is
Serially output 1 byte of data to the lens, and
Wait, input 13 bytes of data from the lens, and connect to the terminal.
(C5LE) to High” level and return (
Steps #410 to #425). In addition, before returning
Set the terminal (C3LE) to II High II level.
What is being done is to notify the lens that this lens communication has ended.
The same applies to lens communication in other modes.
is being processed. Here, the communication data between the body and lens in this example is
Let me explain the contents of the data. Lens communication in this embodiment includes mode I and mode ■ communication.
There is a lens transmitter and a lens transmitter for these communications, respectively.
It is called communication■. First, in the lens communication work, the lens
In addition, as lens-specific data: (i) Open aperture value AV[1 (ii) Maximum aperture value AVmax (iii) Variable value for converting defocus amount into drive amount.
Conversion coefficient KL (Hereinafter, this conversion coefficient will be referred to as "drive amount conversion coefficient")
(1v) Current focal length f0 (v) Lens attachment signal. N (vi) Conversion section for converting the amount of delivery into distance
number KN (hereinafter, this conversion coefficient is referred to as "distance conversion coefficient")
c) (vii) The shortest focal length f1° (viii) The longest focal length fmay is sent. Also, the status of the zoom switch (zoom operation)
data (hereinafter referred to as "Zooms") indicating whether the ring was operated or not.
``Switch data'') is also sent. On the other hand, in lens communication ■, from the body to the lens (1x)
Target focal length f. (X) Presence/absence of A, P Z. Data indicating whether or not the 5LON subroutine has been executed for the first time (first execution within a repeat) is sent. Each of the above data (i) to (X) is 1 byte each.
It is input and output as data. Returning to the flowchart of FIG. 6, the explanation will be continued. When the above lens communication ■ subroutine is turned around,
A value indicating the amount of drive of the AF lens for focusing.
Set the value of counter N to -NLG (a negative value with a large absolute value).
, the first bit is O and 1 indicates positive or negative), and A
Execute the lens drive subroutine for the F lens (step
Step #152. #155). Here, a subroutine for driving the lens is shown in FIG. When this subroutine is called, the sign of the lens drive amount N is
Whether the number is positive or not (the first bit is 1 or not)
), step #1197), if positive, roll out
If the direction is positive, the renormalization direction is the driving direction of the lens.
and send each signal to the motor drive circuit (MDI).
output and set the flag (LMVF) indicating that the lens is being driven.
and return (steps #11.98 to #120)
0) In this example, the AF lens is driven by a counter interrupt.
Controlled by ■ and timer interrupt ■. Here,
Counter interrupt ■ is encoder (ENC) (Figure 3)
Occurs when a pulse indicating AF lens drive is received from
However, the timer interrupt ■ is performed by the counter interrupt ■.
When there is no next counter interrupt within a certain period of time after
occurs in Then, due to this timer interrupt
Detects that the image has reached the end (infinite end or nearest end)
be done. In other words, step (#152) in Figure 6
If you set a large absolute value as the drive amount N, the record
The lens is always driven to the end without stopping in the middle,
The end is reached by the timer interrupt that occurs afterwards.
detected. The above counter interrupt ■ and timer interrupt ■ rules
The chin is shown in Figures 7 and 8, and with reference to these figures.
Let me explain. First, the routine of counter interrupt (2) will be explained. When a pulse from the encoder (ENC) is input, the counter
The counter interrupt ■ occurs, and the counter interrupt shown in Figure 7 occurs.
The routine containing ■ is executed. In other words, the counter value N indicating the amount of drive of the A and F lenses
Subtract 1 from and set it as the new value of counter N. Step #
250), reset timer T1 for timer interrupt.
After that, start it (step #255). Then, it is difficult to judge whether the counter value N has become O or not.
Step #260), if N=O, the lens is driven by a predetermined amount.
Once completed, execute the AF lens stop subroutine.
Step $1265), N=O must be returned.
If so, return without stopping the AF lens. Next, the routine of timer interrupt (2) will be explained. After resetting with the above counter interrupt H routine,
When the started timer T1 reaches a predetermined value, the process shown in FIG.
The timer interrupt H routine shown is executed. Sunawa
When the AF lens reaches the end (infinity end or nearest end)
If the AF lens stop subroutine is not executed, the step
#300), a flag indicating that this flow has passed (
Step #305), timer
Disable interrupts and return (step #310)
). Here, call in steps (#265) (#300) above.
The AF lens stop subroutine that is invoked is shown in Figure 9.
vinegar. When this subroutine is called, first the AF mode
of the AF motor (Ml) to stop the motor (Ml).
The control signal that short-circuits both ends is sent to the motor drive circuit (MDI).
A period of 10 m5ec is output (step #350). So
control to turn off the power to the AF motor (N1)
Step # to output the signal to the motor drive circuit (MDI)
355), resets the flag (IJVF) indicating that the lens is being driven.
Set and return (step #356). Returning to the flowchart of FIG. 6, the explanation will be continued. When returning from the lens drive subroutine, the tarpaulin
Enable interrupts now Step #160), lens
The flag (LEEDF) indicating that the terminal has been reached is set.
It waits for it to be read (step #165). By the way, Su
In step (#152), the absolute value of the drive amount N is
Since a large negative value -NLG is set, the lens is
N=O due to counter interrupt ■ before reaching
Therefore, the lens will not stop midway.
do not have. In other words, it has a driving amount such that N knee NLG.
Since there is no lens that corresponds to N=-N5. If you set
, the lens always reaches the end (infinity) without stopping midway.
The timer interrupt ■ that occurs after the
The flag (LEEDF) is set by the input routine.
It can be done. This flag (CLEEDF) has been set.
When detected in step (#185), step (#1
Proceed to step 70). Then, the lens retracts to the infinity position.
, the amount of lens extension from the infinity position Np
The counter that counts is reset and the above flag (L
EEDF) and return (Step #1
70. #175). Returning to the flowchart in FIG. 5, the explanation will be continued. Return from the above AF lens renormalization subroutine.
Then, proceed to step (#50) and press the shooting preparation switch (
SL) is turned on. of this judgment
As a result, if the shooting preparation switch ($1) is not turned on,
If so, proceed to step (#62) to set up the support for eye proximity detection.
After executing the routine, proceed to step (#60). The subroutine for the above eye proximity detection is shown in FIG.
The explanation will be based on. When the same subroutine is called
, First, the flag (E
PF) (step #200), the grid
determine whether the push switch (SGR) is turned on or not.
Step #202), if it is not turned on, the timer
Prohibit the camera from entering the camera and make sure the shooting preparation switch (SL) is ON.
or when 5 seconds have not elapsed since turning off.
Reset the flag (SIONF) set in
Turn (steps #236, #235). grip
If the switch (SGR) is ON, the eyepiece inspection
Outputs a signal indicating the start of light emission to the detection circuit (EPD) (step
Step #205). This allows the eye proximity detection circuit (EPD
) emits infrared light from an LED. After that, the in-body microcontroller (μC1)
Wait for a while and input the detection signal from the eyepiece detection circuit (EPD).
(Step 11210). And from that detection signal
, whether or not eyepiece detection was performed, that is, whether the photographer
Step #215) Determine whether or not the viewfinder is looked into.
, if peeking is detected, a flag indicating this (
EPF) and execute the 5ION subroutine.
and return (steps #216 and #217). Looking through the finder at step ($1215)
is not detected, enable timer interrupt 1 and
After resetting timer TINT, start and return.
(Step #225. #230). This timer
An interrupt occurs every 250m5ec, and an interrupt is generated.
When the camera is activated, the above-mentioned eyepiece detection sub-group is activated as shown in Figure 12.
After executing the routine (step #240), step (
Proceed to #60). In addition, in case of eyepiece detection only, 5LO
N subroutine (step #55) is not executed and the
It is assumed that you just look at the finder and do not perform any other operations after that.
power hold is not performed (steps in Figure 13).
#510). Therefore, efforts should be made to reduce power consumption.
I can do it. Returning to the flowchart of FIG. 5, the step (#50
), it is determined that the shooting preparation switch (Sl) is turned on.
We will explain the case where In this case, step (
Proceed to #55) to execute the 5LON subroutine and start shooting.
When the shadow preparation switch ($1) is ON or OFF.
Flag set when 5 seconds have not passed since
Determine whether (SIONF) is set (
Step #60). As a result of this determination, the flag (SION
If F) is not set, return to step (#55),
81ON until the flag (SIONF) is reset.
Execute a subroutine repeatedly. On the other hand, the flag (SI
ONF) is not set, step (#65
) and turn the power supply transistor (Tri) (Tr2) to O.
Connect the power control terminal (PWI) (PN2) together for FF.
LOW” level and connect the DC/DC converter (DD
) to stop the operation of the power supply control terminal (PW○).
Set it to “Low” level and reset the flag (SIONIF).
and waits for an interrupt (steps #65 to #73
). Please note that the grip switch (SGR) or shooting preparation switch
When the switch (Sl) changes from OFF to ON, the
5IINT occurs and processing starts from step (1150).
carry out the principles. The subroutine of the above 5ION is shown in FIG. Same sub
When a routine is called, it is first
A flag (SIONIF) is set to indicate that the
Step #500)
If not, set this flag (SIONIF).
Set the initial communication data to be sent to the lens, and then step
Proceed to step (#504). This flag (SIONIF)
If set, reset the above initial communication data.
Then, proceed to step (#504). and step
(#504) Is the shooting preparation switch ($1) ON?
If the switch (Sl) is ON, the timer
Disable interrupt I and proceed to step (#508).
If the switch (Sl) is not turned on, the
Proceed to step (#506). In step (#506)
5IINT is inhibited, and then the power transistor
Power terminal (Pga1) to turn on (Tri) (Tr2)
(PH1) are both at °')light" level, and the lens
Execute communications (steps #510 and #515). Then, the card communication ■ subroutine is executed (
Step #520). The subroutine of this card communication (2) is shown in FIG. same
When the subroutine is called, first the body (BD)
The IC card inserted into the card insertion section (13) of
(referred to as a “card”).
Set the terminal (C8CD) to “Low” level to
, set data indicating modee card communication.
do. Then set it to output mode and read the serial data
Perform communication once and confirm that it is card communication in mode ■.
Notify the card side (steps #930 to #936). In addition, one serial data communication (one 5IO)
transfers 8-bit data, and the same goes for
. After that, the time required for the card side to perform the specified processing
After waiting for
In order to notify the card side of the end of data communication,
Return the terminal (C3CD) to High” level.
(Steps #938-11942). This step (
#940) The data communicated with the card storage on the camera side
Itch (Sc n). Release switch (S2). Learning mode switch (S3). Single/Continuous Shooting Switch (SSC). Indicators of the status of each vertical/horizontal switch (SHL) and initial data communication
This indicates the presence/absence of. Returning to the flowchart in FIG. 13, the explanation will be continued. car
When you return from the card communication subroutine, the card side
waits for the time required for control after receiving the above data.
After that, execute the card communication H subroutine (step
#515. #530). The subroutine of this card communication (2) is shown in FIG. same
When the subroutine is called, it first attempts to pair the card with
In order to visualize the image, set the terminal (C8CD) to 'Low' level.
, set data indicating mode H card communication.
do. Then set it to output mode and read the serial data
Perform communication once and confirm that it is card communication in mode ■.
Notify the card side (steps #944 to #950). Next, change to input mode and take the time required to control the card side.
After waiting for a while, serial data communication is started again.
rotation, presence/absence of card control. A, F one-shot/continuous. Input data indicating presence/absence of A, PZ (steps #955 to #965
). Here, card control means controlling camera exposure etc. on the card side.
Therefore, it means to perform the operation based on the set data. The AF one-shot is the shooting preparation switch (
Once for turning on (or looking at the viewfinder)
AF continues.
As long as the shooting preparation switch (Sl) is ON (or
(while the eye is focused on the viewfinder), the camera can track changes in the subject, etc.
This refers to continuously performing focusing operations. Also, A
The presence/absence of PZ depends on the subject distance (zoom program).
Determine the focal length (based on the Lamb line) or not.
cormorant. After inputting the above data in step (#965),
, terminal (C8CD) to terminate data communication with the card.
) to 'High' level and return (step
#970). Returning to the flowchart in FIG. 13, the explanation will be continued. car
When the communication H subroutine turns, the photographer
The flag (EPF) indicating that you are looking through the viewfinder is
Determine whether it is set or not (step #532)
, when set, executes the AF control subroutine.
Execute (step #540). This flag (EPF)
is not set, step (#535)
to check whether the shooting preparation switch (Sl) is turned on or not.
If the shooting preparation switch (Sl) is turned on,
, executes the AF control (automatic focus operation control) subroutine.
(Step #540) This A, F control suble
The process is shown in Figure 20. When this subroutine is called, first the camera is in focus.
Is the flag (AFEF) indicating that
Step #1100) to determine whether or not it is set.
If so, it is difficult to judge whether continuous AF is used or not.
Step #1105), must be continuous AF
Return if you want. When using continuous AF, the step
Proceed to step (#1110). Also, step (#1100
) is a flag (AFEF) indicating that the focus is on.
) is not set, the step (#1110
). In step (#1110), light reception for focus detection is performed.
Performs integration (charge accumulation) on the CCD in the circuit (AFCT).
After the CCD integration is completed, it is converted to a digital signal.
Input CCD output data (data dump) (step
#1115). Based on this data, the defocus amount DF
Calculate the defocus amount and apply the driving amount conversion coefficient KL to the defocus amount.
Multiply drive amount (AF lens drive pulse number))bDFXK
Find L and return (steps #11.10 to #1
125). Then, from this driving amount N, it is determined whether the focus is on or not.
Step #1130), if it is in focus, the flash
(AFEF) and adjust the lens extension amount NF.
Read, this feeding amount N, and distance conversion coefficient KN etc.
Distance from to subject (subject distance) Calculate DV (
Steps #1135 to #1138). Here, the subject distance
Distance DV is expressed as a logarithmic value. Next, depending on the subject distance,
The focal length is used to determine the size of the subject (imaging magnification).
Away f. , determine. In this way, the focus is adjusted according to the subject distance.
determining the point distance (or
(zooming based on focal length)
It is called "Auto Program Zoom" or rAPZJ. Described later
The same applies to the microcontroller (μC3) in the card.
The focal length can be determined according to the subject distance.
Ru. Now, control is performed based on the data determined on the camera side.
When shooting, the shooting magnification is kept constant at 1760;
Step (#1137)
The subject distance (DV) calculated in is specified as the address.
is obtained by accessing the memory of (step
#1138). Then, the obtained focal length f. 9 is used
Check whether the maximum focal length of the lens exceeds f, 8.
Determined step #1139), maximum focal length f□8
If it exceeds, the focal length f. Set 8 to f.
retry and return (step #1140), on the other hand,
If the maximum focal length f□8 or less, step (#11
Proceed to step 41) and set the focal length f. 0 is the minimum focus of the lens used
Determine whether the distance is less than f1°, and determine whether the minimum focal length f□, or not.
If it is satisfied, the focal length fCQ is the minimum focal length f,i. established in
After resetting, return to step #1142), minimum
If the focal length is more than flin, return as is.
. If it is not in focus in the step (#1130)
If it is determined, after enabling the timer interrupt,
Starts driving the AF lens and indicates that it is in focus
Reset the flag (AFEF) 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. the above
When you return from the AF control subroutine, step
Proceed to (#560). Also, in step (#535)
It is determined that the shadow preparation switch (Sl) is not turned on.
If so, proceed to step (#545) and set the AF lens.
Is the flag (LMVF) indicating driving in progress set?
Determine whether or not. flag (LMVF) is set
When the AF lens is stopped, use the step (#550) to stop the AF lens.
After executing the routine, proceed to step (#560) and
Step when lag (LMVF) is not set.
Skip (#550) and proceed to step (#560)
nothing. In step (#560), the film sensitivity Sv is
input from the film sensitivity reading circuit (DX), and
The brightness BV9 of the subject is input from the photometry circuit (LM). To explain this data input, first, the terminal (C8DX)
Or set (C8LM) to “'Low” level and
Select the circuit ((DX) or (LM)) to input. Then, data is input from the terminal (SIN). data
After inputting , terminal (C8DX) or G;i:(C8
Set IJ to °'High"L//< and input data.
end. After entering the data in this way, this
In order to send data etc. to the card, the card communication sub
Execute the routine (steps #560 to #570). The subroutine of this card communication (2) is shown in FIG. same
When the subroutine is called, the terminal (C8CD
) as °I L 0w9 lebel, car)'G, near
” - Indicates an evening communication request and is mode m card communication.
Set data indicating that (Step #975. #
980). Then, set it to output mode and output the serial data.
Communication is performed once (steps #985 and #990). After that, the card side only needs time to perform the necessary calculations.
After waiting, serial communication is performed 7 times, and the terminal (C8C
f)) is set to 'High' level and data communication is performed to the card.
Indicates the end of the process and returns (steps #995 to #1
010). In step (#1005) of this subroutine
(data transferred to the card side)
) is the current focal length f. Minimum value of focal length f*in Maximum value of focal length Lay Photometric value BV. Film sensitivity S■ Open aperture value AVe Maximum aperture value AVmax. Returning to the flowchart in FIG. 13, the explanation will be continued. the above
When returning from the card communication m subroutine, the step
Exposure calculation subroutine (Fig. 22) is entered in step (#575).
). When the subroutine is called, first
Exposure direct EV by EV-BV1ll10AVs+SV
(Step #1285). Here, BVs are open.
Subject brightness value measured by radiometry, AVθ is the open aperture value
, Sv is the film sensitivity. A predetermined value is determined from this exposure value EV.
Shutter speed based on the AE program line of TV
and aperture value AV, and return (step #
1290). Note that the AE program line is the shutter
– A program line that gives the relationship between speed and aperture value.
Therefore, explanations and drawings regarding this will be omitted here.
However, the various cards described below are also based on the AE program line.
Since the shutter speed and aperture value are calculated based on the
When explaining the operation of the card, a specific example will be shown and explained. After executing the above exposure calculation subroutine, the card
card to enter the calculated exposure value and other information.
Execute the communication subroutine (Fig. 19) (step
#580). This subroutine is a subroutine for card communication.
It is almost the same as step (#102) (Fig. 17).
The communication mode set in 0) is mode ■, and
Serial communication performed on step (#1045) is performed three times.
Since the only difference is in what is done, a detailed explanation will be omitted.
Ru. The data input from the card side in this communication are: card-side calculated shutter speed TVCD, card-side calculated aperture value AVc, card-side calculated focal length fcD. After executing the subroutine for card communication ■ above, the card
Whether or not to perform exposure control etc. based on the data on the side
, data obtained through card communication■ and data obtained before that.
The determination is made based on the obtained data (step #585). child
FIG. 23 shows a subroutine for card control determination. When the same subroutine is called, card communication■
Regarding the presence or absence of card control input from the card to the body
Determines whether or not to perform card control based on data.
(Step #1305). When performing card control (
The camera's exposure etc. are set to the data set by the card.
control shutter speed TVc
, control aperture value AVc, and focal length fc
, shutter speed TVco calculated on the card side. aperture value AVCD and focal length (fcn) respectively.
(Steps #1310 to #1317). stop
APZ availability based on the data entered from the card.
/ Determine if there is no APZ, and if APZ exists, perform lens communication ■
, target focal length f. is transferred to the lens and returned.
(Step #1318. #1319). APZ no place
If so, simply return without performing lens communication.
Ru. Lens communication ■ is, as shown in FIG. 15, lens communication I.
Compared to (Fig. 11), the body is smaller in step (#920).
The only difference is that data is output to the lens.
Therefore, the explanation will be omitted. On the other hand, the step (#130
As a result of the judgment in step 5), if camera side control is performed (camera
The exposure of
case), control shutter speed TVc, control aperture
On the camera side, as the value AVC and focal length fc,
Shutter speed TV calculated in step (#575)
, aperture value AV, and focal length fcQ, respectively.
Set steps #1320 to #1327), step
Proceed to (#1318). Returning to the flowchart in FIG. 13, the explanation will be continued. the above
When returning from the card control determination subroutine,
, control shutter speed TVc, control aperture value AVc,
Presence of card function (presence of card control). and data indicating that learned APZ is being performed.
The data is serially output to the display control circuit (DISPC) and displayed.
The display control circuit (DISPC) operates based on the above input data.
Next, display the information on the display section (DISP) on the body.
(Step #590) The display section on this body
FIG. 14 shows the display contents by (DISP). This diagram
In, (101) is when the card function is working.
This is the symbol displayed, and (102) is the learned APZ
This symbol is displayed when the process is being performed. Also,
Numerical display (103a) (103b) is 4 digits from the left
indicates the shutter speed, and the next two digits indicate the aperture value.
. These numbers are displayed from the microcontroller (μC1) in the body.
The data that is serially output to the control circuit (DISPC)
displayed based on. After completing the above display (step #590), step
(#595), the release switch (S2) is turned on.
Determine whether or not there is. Release switch (S2) is O
If it is set to N, focus in step (#610).
- Determine whether or not the status is based on the flag (AFEF), and
If the state is focused (AFEF=1), step (#615)
If the camera is not in focus, proceed to step (#638).
Do not release the camera. In step (#615)
, disables all interrupts, performs exposure control, and
After finishing, perform one-frame winding control (step #6)
15~#625). And 31 ON subroutine
Reset the flag (SIONF) to indicate that the
set and then turn on the shooting preparation switch (Sl).
Allow 5IINT and return (Step #6
30, #635). Release switch (S2) in the step (#595)
If it is determined that is not ON, step (
#610) Same as when it is determined that the camera is not in focus
, proceed to step (#638). Step (#638)
Now, the shooting preparation switch (Sl) is turned on, but is it not?
Determine whether The shooting preparation switch (sl) is turned on.
If the
After resetting T2, start it and show 5LON.
When the flag (shooting preparation switch (sl) is ON or
It is set when less than 5 seconds have passed since it was turned off.
Set the flag) (SIONF) and return.
(Step #642). On the other hand, step (#638)
It is determined that the shooting preparation switch (sl) is not turned on.
When this occurs, a flag (EPF) indicating eye proximity detection is set.
Step #644)
If it has been set, the process returns to step (#500). flag
(EPF) is not set, step (
Go to #650) and zoom using the zoom switch data
Determine whether it is inside or not. If the result of this judgment is zooming
, proceed to step (#640), and set timer T for power retention.
Extend the power retention time by starting after resetting 2.
Set the flag (SIONF) and return.
(Step #642). Step (#650)
When it is determined that the system is not in progress, the flag (SIONF
) is set or not. Step #85
2), returns if not set. This is it
This flow (SIOH subroutine) is
) but when the eyepiece is stopped, the power hold is not performed.
This reduces power consumption. sand
In other words, return from the 5IOH subroutine and reset.
Returning to the routine (Figure 5), the flag (SIONF)
is in the reset state, so the power supply transistor (Tri
) (Tr2) is turned off, and the DC/DC converter (D
The operation D) stops (steps #60 to #7o). child
In contrast, the flag (S1O
NF) is set, the step
Proceed to step (#655) and set the timer T2 for holding the power supply.
Determine whether or not 5 seconds have been clocked, and as a result, 5 seconds have elapsed.
If not, return. If 5 seconds have passed,
Proceed to step (μC30) and turn on the shooting preparation switch (sl)
Controls the end of photographing when the camera is turned off. Returning to the flowchart in Figure 5, at step (#2゜)
When it is determined that the main switch (So) is not ON
I will explain about it. In this case, proceed to step (#8゜).
Interrupts other than SMINT by switch (So)
Disable interrupts and perform AF lens renormalization subroutine
(Step #90). This allows the AF lens to
is renormalized to the most renormalized position. Regarding this point
Since this has already been explained, detailed explanation will be omitted. AFre
After executing the lens renormalization subroutine, the body side
Power supply to the circuit and the zoom motor (M3) inside the lens.
Turn off the transistor (Tri) (Tr2)
In order to
I level and further DC/DC near inverter
In order to turn off (DD), terminals (pwo) are connected to l r, o
, turn on the main switch (srl) as H level.
Disables and stops interrupts other than those caused by SM/NT.
(enters sleeve state) (steps #120 to #1
30). This completes the software for the in-body microcontroller (μC1).
After completing the explanation of the microcomputer (μC2) inside the lens,
Describe the software. [2,2] The software lens of the microcomputer inside the lens is
When it is not attached to the Mera body, it is shown in Figure 4.
The lens attachment detection switch (SLE) is turned on, and the lens attachment detection switch (SLE) is turned on.
The reset terminal (RE2) of the microcontroller (μC2) in the lens
°Since it is maintained at “Low” level, the lens side
The circuit is not driven at all. the lens is attached to the camera body
When this happens, the lens attachment detection switch (SLE) turns OFF.
Then, l LowN+ level is applied to the reset terminal (RE2).
A signal that changes from the bell to 'High' level is input.
. As a result, the microcomputer (μC2) inside the lens is
Execute the reset routine shown below. This reset
In the routine, after resetting the boats and registers (
Step #L5), stop (enter into sleeve state). Next, processing when a C8 interrupt occurs will be explained. From the body to the lens terminal (C3LE) ``old gh'' level
A signal that changes to °'Low' level is transmitted from the
And the microcomputer (μC2) in the lens is O shown in Fig. 25.
8 Execute interrupt routine. In the same routine,
2-byte serial data in response to the clock from the body.
Perform serial communication (serial input/output) (step #56
0). Next, 1-byte serial communication (serial input)
Input the data indicating the communication mode from the body and start the communication.
Determine the communication mode (step #L585. #L590
), and then, depending on the communication mode determination result.
The following processing (lens in the microcomputer (μC1) in the body)
Communication 1. Processing corresponding to II) is executed. In other words, if the communication mode is mode ■, 13 bytes
Step #L6 to serially output the data to the body side.
20), the signal to the terminal (C8LE) is at °’Low” level.
Wait for the level to change from 'High' to 'High' (step
#L625), step when the level is “High”
Proceed to (#L610) and repeat the PZ subroutine
Execute. Note that the terminal (C3
The signal to LE) is from I Lo, II level to "t(
igh” Waiting for the change to l/bell is the level.
to ensure that communication between the lenses and the body is terminated.
This prevents other processing from being performed during communication.
I have to. This kind of confirmation of the end of communication can also be done in communication mode ■.
The same process is performed (step #L635). Also,
Repeat Pz subroutine with step (#L610)
C8 interrupts are also possible during execution, and this
In this case, the interrupted routine is assumed to have ended.
It will be done. If the communication mode is mode ■, 3 bytes from the body side
In step #L630), input the data serially.
Is the signal to the child (C8LE) at II r, o, or II level?
Wait for it to change from 1゛H1gh T* level (step
#L635), ° When the level reaches “High”
Proceed to step (#L610) and execute the PZ subroutine.
Execute repeatedly. The above PZ subroutine is shown in Figure 26, and based on this figure
I will explain next. When the same subroutine is called,
When the eyepiece is detected or the shooting preparation switch (S
Data indicating the first data communication when l) is operated
is sent from the body or not, and
When the data was sent, a zoom operation was performed.
Reset the flag (operation F) indicating that
Proceed to #L710). This flag (operation F)
Only when communication is for the first time, that is, for the first time, 5LON sub
Reset only when the routine is executed. data
If this is not the first communication and such data is not sent,
If so, skip step (#L705) and start immediately.
Proceed to step (#L710). Step (#L710)
, the encoder that indicates whether the zoom control ring is being operated is displayed.
Load the reader (ZVEN) and proceed to the next step (#L71
In step 5), it is determined whether a zoom operation is being performed. If there is a zoom operation, proceed to step (LL750).
A flag indicating that a zoom operation was performed in (operation F)
Set the motor drive rotation according to the direction and amount of operation.
A control signal is output to the circuit (μC3) to drive the zoom lens group.
control (step #L755). and zoom
Set the flag (ZMVF) that indicates that the lens group is being driven.
and returns (step #L760). In addition, the lens
For details of control ■ (step #L755), please refer to this application and
Since it is not directly related, the explanation will be omitted. There is no zoom operation in the step (#L715)
If it is determined, proceed to step (#L720).
Determine whether the flag (operation F) is set with
, the APZ focal length (image
The photographer judged the image (corner) to be inappropriate and performed the zoom operation.
Therefore, they do not control APZ. In other words, Z
The flag (ZMVF) indicating that the lens group is being driven is set.
Step #L730)
If it is not set, it will return and set
If it is, the zoom operation is canceled and the zoom lens is
Stop the drive of the ZV group and reset the flag (ZMVF)
After that, return (step #L735. #L73
7). On the other hand, the flag (operation
F) is set. (When judged as X, the
Step (#L725) and check the presence/absence of APZ (subject
Whether to determine the target focal length for zooming depending on the distance
) is determined based on the data sent from the body.
Ru. And when APZ is present, it is sent from the body.
focal length f. is the lens driving focal length bc, and this
Controls the drive of the zoom lens group to achieve the focal length.
After the drive is completed, return to step #L740.
#L74.5), If there is no A P Z, just leave it.
turn on. For details of lens control work (step #L745), please refer to
Since these are not directly related to the present application, their explanation will be omitted. This concludes the software for the microcomputer (μC2) inside the lens.
After completing the explanation of the microcomputer (μC3) in the card,
Describe the software. [2, 3] Software of the microcomputer in the card This example
In the camera system, sports cards are used as the aforementioned IC cards.
cards, auto depth cards, portrait cards, etc.
can be used. Below, the microcontroller inside the card (μ
C3) By explaining the software
card, auto depth card, and portrait car
We will explain the operation of the three types of cards. [2, 3, 1 Sports Cards Sports cards are for moving subjects such as sports, etc.
This card is suitable for photographing the body, and
When you attach it to the camera and take a picture, the camera's AE program
In shifts to high-speed side and shoots at a fast shutter speed
You will be able to do this. Below is how this card works
Give an explanation. When this sports card is attached to the camera, Figure 27
Executes a routine that resets the flag. Reset all registers (RAM) and sleep
(Step 5-5). Next, connect the I from the camera to the sports card terminal (C3CD).
I L Change from OWI+ level to 'High' level
When a signal is sent to the sports card, the sports card
Execute the interrupt routine shown in where sports
The card synchronizes with the clock sent from the camera,
Serial to input data indicating card communication mode
Perform communication once (8-bit data transfer) (step
S-15). Then, from the data indicating this mode,
mode to identify which type of communication is
1 to ■ correspond to card communication I to ■, respectively), communication
Perform processing according to the type. In other words, first, it is necessary to take a step to determine whether or not it is a card communication device.
(S-20), in the case of card communications, the card must be
Serial communication is performed as a data input side (step S-35).
(step S-30), the data is transferred from the camera.
Take the ta. Sub data settings based on this data
Execute the routine (step S-35) and then
Click. Please note that the data transferred between the camera and card
The contents are executed by the in-body microcontroller (μC1).
Explanation of the card communication I subroutine (Fig. 16)
Since it has already been mentioned in , I will omit the explanation here.
Ru. Transfer in card communication ■ to ■ (Figures 17 to 19)
The same applies to data explanations. Here, the explanation of the above data setting subroutine is given in the 29th section.
Do this based on the diagram. When the same subroutine is called
, First, in step (S-430), the card switch (S
cD) is turned on and turns on the card switch.
Reset the flag (ScnF) when the switch (SCD) is OFF.
e-car and return (step S~460)
When the switch (SeJ is ON, the flag (SCDF
) is set (S-435)
If it is set, the switch (SCD) will be operated.
Return as it continues to be made. Flag (S.1
1F) is not set, this flag (Sc
oF) (step S-440), the card
Determine whether the function is currently turned on (step
S-445). As a result of this judgment, if it is ON, the card
Card control as data to be output to the camera side through communication■
Set the data indicating no (card function 0FF),
In the case of F, it indicates the presence of power-de control (card function ON)
Set the data. Data on the presence or absence of such card control
The card switch (SCD) is turned on by the data setting.
The presence/absence of card control will be switched alternately each time.
Ru. After setting the data for whether or not this card control is enabled, step (
The process advances to step S-463) to control learning. That is, in step (S-463), the learning mode is
The switch indicating change (S3) went from OFF to ON.
If the change is from OFF to ON, the academic
ON mode for learning, OFF mode for not learning
, Reset mode to reset what you have learned
The switch (S3) changes the three modes from OFF to ON.
(Step S-465)
), proceed to step (S-470). Step (S-4
63), switch (S3) is changed from OFF to ON.
If it is determined that there is no
Proceed to step (S-470). Step (S-470)
Now, the data sent from the camera through card communication
The release switch (S2) is turned on based on
If it is not ON, step (S-
4, 75) and reset the flag indicating continuous shooting (continuous shooting F).
Click and return. Release switch (S2) is O
If it is N, proceed to step (S-480) and start continuous shooting mode.
Data sent from the camera (single shot/continuous shot)
The judgment is made based on the photo switch (Ssc) data), and the
If it is in photo mode, the flag indicating continuous shooting mode (continuous shooting F) will be displayed.
Step S-485: Determine whether or not it is set.
), the release switch (S2) is set to O.
Perform learning by going through this flow again with N.
Return without delay. This means that learning in continuous shooting mode is
This is done only for the first shot of continuous shooting, and for the second and subsequent shots.
This is because there is no learning about photography.
be. This allows for repeated learning of similar shooting scenes.
avoid doing so, and only study for each different shooting scene.
I can. If it is determined in step (S-480) that the mode is not continuous shooting mode.
When it is determined, proceed to step (S-495) and learn.
Execute the subroutine and return. Also, the above step
The flag (continuous shooting F) is set in step (S-485).
If not, for the first shot in continuous shooting mode
Therefore, after setting the flag (continuous shooting F) (step
S-490), executes the learning subroutine and returns.
turn on. Here, the above learning subroutine is shown and explained in Figure 32.
I will clarify. When the subroutine is called, the learning
Step S-5: Determine whether the mode is OFF mode or not.
00), returns without learning if it is in OFF mode.
Turn on. If the mode is not OFF, step (S-50
Proceed to 5) to determine whether the learning mode is reset mode or not.
However, if the card is in reset mode, the built-in learning
E2FROM (electrically rewritable program
Mable ROM) is reset (△f=o described later) and reset.
turn on. If learning mode is not reset mode,
Proceed to Step (S-520) and determine the focal length with the card.
fcD is the minimum focal length f□ of the interchangeable lens being used
0 and minimum focal length 9. Determine whether it is between 1 and
Within this focal length range (L:n≦fcIl≦f,,,)
Otherwise, there is no point in learning a focal length that cannot be set.
Since there is no learning, it returns without learning. Focal length fe
If n is within the above range (fs: n≦fan≦f,,,)
If so, proceed to step (S-525) and change the camera's posture to vertical.
data from the camera (vertical/horizontal switch (S□,
) data)). As a result of this determination,
If so, the focal length fcD determined by the card is 1/1.3
(Magnification ratio of shooting when the posture is vertical and horizontal)
Set this as a new fCD and proceed to step (S-530).
learning by executing subroutine LR.
Determine whether the focal length is what it should be (within the specified learning range).
). Note that the focal length feb is expressed logarithmically.
Therefore, in the actual calculation, multiply rl by /1.3.
'reducing log1.3' means 'subtracting log1.3'. The above subroutine LR is shown in FIG. Same sub-routine
When the command is called, it first indicates that it should not be learned.
Step S-600
), body focal length fs (latest focal length during actual shooting)
point distance) is 172 or more than the focal length fco determined by the card.
Step S-6
05), if it is within this range, it will return as is, and this
If it is not within the range, set the flag (LRF) and then return.
(Step S-610). Like this, not much
If there is a large deviation (difference between fcゎ and f8),
, which is different from the sports scene assumed in this example.
subject distance and focus based on this large deviation.
Change zoom program line to give relationship to point distance
(learning) is not the intention of this example.
As such, no learning is performed. Returning to the flowchart of FIG. 32, the explanation will be continued. the above
If you return from subroutine LR, it will not be learned.
Whether the flag (LRF) indicating that the
Step S-535) to determine whether it is set or not.
If so, it will be returned as not learning. Flag (LR
F) is not set, the camera focal length fa
(the latest focal length at the time of actual shooting) and the card
Focal length feb (step of the AE calculation subroutine described later)
Δf+=f
Find s fcn (actually it's a ratio, but compare the focal length)
(Since it is expressed as a number, find the difference), the previous deviation △f?
minus the focal length difference Δf, that is, Δ
Let f−Δf be the new deviation Δf, and this new deviation Δf
is written to the E2FROM built into the card and stored.
Return after setting (steps S-545 to S-555)
). Returning to the flowchart in FIG. 28, step (S-2)
0) If it is determined that the type of communication is not card communication■
I will explain about the case. In this case, step (S-40)
Proceed to step 3 to determine whether card exchange is possible or not, and then proceed to card exchange.
If it is true, please check the data set above and the card specific location.
The card is set as the output side in order to output the fixed data, that is, the presence/absence of card control, continuous AF, and data indicating the presence of APZ to the camera.
Step S-45), after serial communication
Leap (step S-50). Here, the sports car
The code is always set as APZ present in the above data.
However, this depends on the size of the moving subject (imaging magnification).
) also wants to be followed at all times. In the step (S-40), the type of communication is card communication■
If it is determined that it is not, proceed to step (S-51).
Determine whether or not there is card communication■, and perform card communication■
If so, enter the card side as step S-52)
, perform serial communication and input camera data (
Step S-53). Then, the next step (S-54
) to calculate data for controlling the camera.
The subroutine (including focal length calculation) cannot be executed.
Step S-54), sleep. This AE calculation sub
The routine will be described later. In addition, step (S-5
The data input from the camera in 3) is the support for card communication m.
As mentioned in the explanation of the routine (Figure 18),
Current focal length f. Minimum value of focal length fsin Maximum value of focal length f, 8 photometric values Bv[l Film sensitivity S■ Open aperture value AVs Maximum aperture value AVmax. In the step (S-51), the type of communication is card communication■
If it is determined that it is not, it is considered to be card communication■
Proceed to step (S-60), set the card to the output side, and
Each data calculated on the board side, that is, the shutter speed T
VCD""TVC Aperture value AVco"AVc Target focal length fCD (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 (steps in FIG. 28)
Refer to the flowchart in Figure 30 for step S-54).
I will explain as I go along. When the same subroutine is called,
First, in steps (S-700) to (S-730)
, AE calculation diagram (AE program) as shown in Figure 31.
Measure the shutter speed TV at the bending point of
Calculate. That is, in step (S-700) the focal length of the lens is
f, (input from the camera side in step 5-53 in Figure 28)
Determine whether the current focal length) is 50 mm or more,
When fp<5On+m, there is less possibility of camera shake.
Set TVt'=FJ and set the aperture to a slightly narrowed line (
Step S-705) , , for this, f, 550 mm
When there is a moving subject nearby, it will appear larger.
Assuming that, in order to increase the shutter speed, the shooting magnification is set to β.
Accordingly, change the line as follows (step S-710
~S-730). That is, when β>1150 TV+=11 1/100< β≦1150 (7) When TVr=1
When 0β≦1/100, TVr=9. Next, from photometric brightness (main subject brightness) BVS to exposure value K
VS is calculated (step S-735). And this
Whether the exposure value EVs exceeds the control limit (AVmax+
Exceed TVwax or AV9+ TVmin
Steps S-740 and S-750 to determine whether it is a vortex or not
), when the exposure value EVs exceeds the control limit value, the control system
Limit value as shutter speed TVC and 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,
In this case, the shutter speed when the aperture value is AV=AVs
Calculate the degree TV=EVs AVs and use this shutter speed
TV is the turning point of the AE program line.
It is determined whether the motor speed is equal to or less than TVT (step S-7).
60, S-765). Then, when TV≦TVI, the control
Control aperture value AVc and control shutter speed TVc as AVc
=AVs TVc'=TV, proceed to step (S-830), and set TV>TVT.
When A is determined by the focal length f of the lens and the imaging magnification β
Assume that the E program line changes, and do the following:
Find the control aperture value AVc and control shutter speed TVC.
Ru. In other words, the AE program line is
If so, increase the shutter speed to prevent camera shake.
If the focal length is short, consider the depiction (depth of field).
) Set the aperture to a narrow line. Figure 31 is
, such AE program lines are drawn for three lenses: f=35mm, F=2.8, f=105mm, F=4.58, f=210mm, and F=4. Here, f
is the focal length of each lens, and F is the F number of each lens.
It is. In Figure 31, f = 105 mm and f = 2
3 lines for each 10mm lens
It is compatible, and the line changes depending on the shooting magnification β.
. In other words, these three lines, starting from the top, satisfy β≦1/
When 100, When 1/100<β≦1150,
When β>1150, respectively. Therefore, for the exposure value EVs, as shown in FIG.
Find the aperture value AV from the AE program line such as
As shown in steps (S-775 to S-795),
Different calculation formulas are used depending on the focal length f, and this
The TVT in these calculation formulas also differed depending on the value of β.
value is used (see steps S-710-S-730)
). In addition, the above example uses three single focus lenses.
Although described above, the same applies to zoom lenses. In this way, in steps (3-775 to S-795)
The obtained aperture value AV is smaller than the maximum aperture value AVmax
Step S-800), AV≧A
When Vmax, AVc = AVmax TVc = EVs - AVmax Step S-805), Step (S-830)
Proceed to. When AV<AVmax, set the shutter speed to TV=E
Vs-AV and step S-810), this shutter
shutter speed TV is smaller than the maximum shutter speed TVmax
It is determined whether it is slow (step S-815). Then, when TV<TVmax, AVc=AV TVc=TV (step S-820), and when TV≧TVmax
As AVc = EVs - TVmax TVc = TVmax, the control aperture value AVc is recalculated and the control shutter is
Step S-8: Set the motor speed TVc to TVmax.
25), and then both proceed to step (S-830). From step (S-830) onwards, APZ calculations, e.g.
In other words, the zoom program line (subject
(program line that expresses the relationship between distance and focal length)
Focal length f corresponding to the subject distance based on. Find D
Perform the calculation for Note that in this embodiment, this zoom
Reduces the ROM capacity required to store program lines
However, in order to reduce the subject distance DV (expressed logarithmically
The object distance is an integer among the focal lengths corresponding to
Only those corresponding to remote DV are stored in the ROM. And since the subject distance DV is generally not an integer,
Direct zoom program line between two adjacent integers
By interpolating lines, the focus corresponding to the subject distance DV is determined.
Point distance fen is calculated (step S-850 described later)
reference). Hereinafter, this focal length f. About the calculation method of D
explain. First, subject distance DV (distance information expressed in logarithm)
Take out the integer part DV+ of , and set this integer part DV+ to the address.
The table in ROM is accessed as a focal length f.
ix (logarithmic value) and from the integer part DVI
is an integer DV+ that is 1 larger. , the focal length as address
Read out the distance f2×(logarithm value) in the same way (step S
-830 to S-840). Next, the small subject distance DV
Take out several copies of DV [l and use the card to calculate the focal length
fCD=f+x+(f2x f+x)XDVs
- Determine from ■ (Step 5-84.5. S-85
0). Then, the learned value △f (step S in Fig. 32
-555) is read from the E2PROM, and this △f
The value obtained by adding the above focal length fcD to the new f. , and
(Steps S-855, S-860). Then step
(S-865) determines whether the camera orientation is vertical or not.
Otherwise, it will return as is, but if it is vertical, the focal length
Multiply by 1.3 (expressed in logarithm, so fen
logl, which would add 3) return (start
TEP S-870). As you can see from the above method of calculating the focal length fen, this car
When shooting under the control of a
The entire system program line is changed by the learned value △f.
Zooming will be performed automatically based on the line you moved.
It will be called. [2, 3, 2 Coat Auto Debs Card Auto Debs Card is used when traveling or at events, etc.
A card suitable for taking photos where both the scenery and the scenery are in focus.
If you attach this card to your camera and take a picture, you will see
The camera is controlled so that everything from the object 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
5 Execute the reset routine shown in Figure 5 and remove this camera from the camera.
from °”Low” level to the terminal (C3CD) of the board (C3CD).
When a signal that changes to the old gh” level is sent, the third
6. Execute the interrupt routine shown in Figure 6. These lycees
The processing contents of the stop routine and interrupt routine are
Card reset routine (Figure 27) and interrupt
Each routine is the same as the other routine (Fig. 28), so we will explain it below.
omitted. However, in card communication ■ in Figure 36, card control is enabled.
/Non-one-shot AF Data indicating APZ presence/absence is sent from the card to the camera (step
0-50). Regarding the data setting subroutine shown in Figure 37,
, in the case of the sports card mentioned above (Figure 29) and some parts.
This will be explained as well as subgroups of this data setting.
learning subroutines called from the
The focal length and distance that should be learned during the learning subroutine.
Determine whether the shooting magnification is within the specified learning range
Subroutine LR is shown in FIGS. 39 and 53, respectively.
explain. In Figure 37, the case of sports cards (Figure 29) and
The difference is steps (0-456) to (0-458)
is added, and in step (0-456)
Based on the data sent from the camera, the
Or after 5 ION (shot preparation switch without eyepiece detection)
Determine whether this is the first data communication after SL) is turned ON.
Set. Then, if it is the first data communication, A, P
Perform Z, and prohibit APZ if it is not the first data communication.
Stop. In other words, this card and the portrait described below
For cards, the first time after the camera is activated (SIOH's sub
APZ operation is performed only on the first execution of the command
I have to. This is because the subject to be photographed is a stationary subject.
This is because it is considered that it only needs to be done once. Next, execute the learning subroutine of step (0-495).
The explanation will be based on FIG. 39.
The processing contents of steps (0-500) to (0-535) are
This part is the same as the case of Tsukado (Figure 32).
The explanation for this will be omitted. However, step (O-530)
The processing content in subroutine LR is similar to that for sports cards.
First, this subroutine is different from the case (Fig. 33).
will be explained based on FIG. When the subroutine is called, it must be learned first.
Step 1 to reset the flag (LRF) indicating that
0-600), body focal length f11 (actual shooting
(latest focal length) is 2gmm or more and 100mm or less
Step 0-605)
If it is within the range, calculate the imaging magnification β (step 0-61
0). Then, this photographing magnification β is 1/70 (subject
Magnification when the distance is 2m and the focal length is 28mm) or more
, and 1. /160 (focal length when subject distance is 16m)
Determine whether the distance is 100 mm (magnification) or less.
Step 0-615), the imaging magnification β is within this range.
If so, return it as is. On the other hand, if the imaging magnification β is
or when the focal length f of the body is not within the above range.
Not within the range (within the range of 28 mm or more and 100 mm or less)
When, a flag indicating that learning should not be done (LRF)
is set and the process returns (step Kano 620). wife
In such cases, it is best to use an auto depth card.
As it is not the focal length range or magnification range that is
In other words, special shooting methods are required to use this card.
As it is a shadow, we will not study it. Which focal length and shooting magnification should be learned as described above?
After determining whether or not, the processing after step (0-545)
, but before that, the auto depth card and the portrait report.
The method of learning using card cards is shown in FIG. 40 and will be explained below. In this figure, the zoom program before this learning
Muraishi (°hereinafter referred to as "original line") is (p
o ), and the zoom program after this learning is
The lamb line is (p,). Now, the subject distance is DV and the focal length of the body (actual shooting distance) is DV.
Assume that the latest focal length at the time of shadow) is fa. and
, this object distance (DV) has an integer part (DV+) and a decimal part
(DV@), the original label
In (po), the integer object distance DV+ is the focal length
To f+, set the subject distance as an integer larger than DV+ by 1.
DV+, + are respectively associated with the focal length f1゜1.
Ru. From these focal lengths f1 and f+++, the original
Corresponds to the subject distance DV based on the line (po)
Focal length f. , find. L in the figure is this focal length fc
, and the body focal length (the latest focal length at the time of actual shooting)
) is the deviation from fe, and this deviation is expressed as a predetermined integer n.
Let the divided value be △f. That is, Δf L = L
/ n= (fa-fcn)/n・”■
It is. Here, the value of the integer n (n=1 to 3) is experimentally
shall be determined. Note that instead of the above formula, △f L=
ni-L=k(fe-fcp) -■ Toshidemo
good. However, k is a positive number less than 1, and its value is experimentally
shall be decided based on the Next, the point where the subject distance is DV and the focal length is fl + Δft
and the point where the subject distance is DV+-+ and the focal length is fl-1.
and the point where the subject distance is DV+ and the focal length is fl.
The straight line connecting these is the learning line. Therefore
Then, the focal length f1゛ after learning for the subject distance DV+
is f+' = f++ Δf L/ (1+DVs)
−■, and after learning for object distance DVl−+
The focal length L++' is L++'=f+++10△f L/ (2-DVll)
...■, store these values in ROM,
Changing the zoom program line. Returning to the flowchart in FIG. 39, step (0-54)
Continue the explanation from 5). In step ([1545),
The above deviation △fL is △fL= (fe-fcJ/n...
- Obtained from ■ and has already finished reading (see Figure 39)
0-750. 0-755) Focal length f before learning
, x”frt and f2x=f1−+, the object distance is
The focal length f+x" after learning for distance DVI is f+x'=Lx+Δf L/ (1+DVll)
...obtained as ■, subject distance DV+. against 1
Focal length f2 after learning. ' to f2x'-f2x+ Δf t/ (2-DV9)
−■ (step 0-550.0-55
5). By the way, the zoom program line is based on the subject distance.
As the distance increases, the focal length also increases, but as a result of learning,
When this relationship is reversed (no longer monotonically increasing), the subject
The photographic magnification changes suddenly due to changes in body distance, which is uncomfortable for the photographer.
It may give you a feeling. Therefore, step (0-565
) to (0-585), such subject distance and
Processing is done to prevent the relationship with the focal length from reversing.
Ru. That is, first, in step (0-565), the subject distance is
The focal length f[lX corresponding to DV+-+ is E2PROM
This value feX and flX' are compared, and f
If ax≦fix', just step (0-580)
If f ll, > f I8゛, set Lx””fax and proceed to step (0-580) (step 0-
570, 0-575). At step (0-580) f
18' and f2x", and find that f,,'<,f2.'
Proceed to Raba Sonomama Step (0-590) and fix'
>f2y', set f2X' : flX' and proceed to step (0-590) (step 0-
580.0-585). And step (0-590
) Then, f, x′ obtained in this way, DV+
Write it to the E2PROM as an address and store it, then
The step (0-595) is to set DV+-+ as the address.
After writing LTE f2x' to E2FROM and storing it
Return. Next, the subroutine for AE calculation in the auto depth card.
Explain about Chin with reference to the flowchart in Figure 41.
I will clarify. As already mentioned, this auto-depth card is
Taking photos where everything from the subject to the background is in focus
This is a card whose purpose is Achieve the purpose of this card
In order to
Calculate the aperture value that covers the depth of field using the following formula.
Ru. F=Lp/(2・EEL・α・δ) ・・・■
However, Lp: Current amount of extension of A and F lenses KEL: De
Conversion coefficients α and δ for converting the focus amount into the drive amount: Constants related to depth. The above aperture value F is the current advance from position to position.
When the AF lens is placed at half the position of the amount (Lp), ■
Use an aperture value that provides a depth of field that covers the entire
be. In the flowchart of Fig. 41, the aperture value F is set in steps.
(0-624), and use the Apex system to calculate this.
Set the expressed value as AVDEP (step 0-626)
. Based on this value, the range of depth of field is
AF lens to cover from the current position to the current subject position.
The lens drive is controlled by calculating the amount to shift the lens.
This will be discussed later. In the above equation 0, Lp is O when the subject is at infinity.
The value increases as the distance to the subject decreases. In other words, when the subject is at infinity, the depth of field is large.
There is no need to shift the AF lens, and F=O. on the other hand
, as the subject gets closer, the background also comes into focus.
requires a large movement of the AF lens, and the F value is large.
I hear it. However, in reality there is a limit to the range of permissible aperture values.
Therefore, the AVDgP obtained as above is the lens'
When the aperture value is less than AV11, AVDEP=AVs.
However, when the maximum aperture value is larger than AVmax, AVDE
Set P = AVmaX (steps 0-628 to Q-
634). Then, in the next step (0-636), the camera shake detection
Calculate the reference value TVp of the shutter speed for
Calculate. zFz=16X log2fp150+ 56
... [Phase] TVF = (zFz/2+ 16)/
8-■ However, f: is the 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. The reference value of the shutter speed found in step 2 (camera shake)
(judgment reference value) If the TVF exceeds the specified value, the
TVp>8), TVF-8 tossle (step 0-640
．． 0-64.5). The shutter speed is faster than a certain level.
To prevent camera shake from issuing a warning when
It is. Next, from photometric brightness (main subject brightness) BVs to exposure value E
Calculate Vs (step 0-650). And this
Whether the exposure value EVs exceeds the control limit (AVmax
+ TVwax or AVs + TVm
step 0-655.0-
665), when the exposure value EVs exceeds the control limit value,
As control shutter speed TVC and control aperture value AVc
Set limit values (steps 0-660.0-67'O
). As a result of the above judgment, if the exposure value EVs does not exceed the control limit,
If so, based on the AE program line shown in Figure 42,
Control in steps (0-675) to (0-740)
Calculate aperture value AVc and control shutter speed TVc
. In other words, first, the aperture value is AV = AV, and the image is
Determine shutter speed TV=EVs AVs and calculate this shutter speed.
Is the camera speed TV less than or equal to the reference value TVF for camera shake detection?
is determined (steps 675.0-680). This judgment
As a result of the calculation, when TV≦TVF, it sets AVc”AVe Vc-TV and proceeds to step (Q-745), and TV>TVF(
7), set the aperture value AV as AV=EVs TVF, and set the aperture value AV as AV=EVs TVF.
1) Aperture value to make the depth of field range up to the position)
Determine whether it is less than or equal to AVDEP (step 0-69
5). As a result of this judgment, if AVsAVDEP, the hand
In addition to prioritizing no vibration, close down the aperture as much as possible.
In order to increase the depth of field, AVc=AV TVC=TVF Steps 0-700), Steps (0-745)
Proceed to. On the other hand, if AV > AVDEP (7) then AV
The effect is the same even if you close down the aperture more than DEP, so
increase the shutter speed AV and shutter speed TV at the same rate.
Find the AV based on the line (see Figure 42).
Steps 0-705). Then, the obtained AV is the maximum aperture value
Step 0-7IO)
, when AV>AVmax, AVc = AVmax TVc ” EVs AVmax Steps 0-740), Steps (0-745)
Proceed to. On the other hand, when AV≦AVmay, the control aperture value
Let AVe be AVc""AV, 'rv=gvs-AV, and check whether the TV is less than or equal to the maximum shutter speed TVmax.
(Steps 0-715 to 0-725). So
Then, when TV≦TVmax, set TVc=TV and proceed to step ([1745), and TV>TVmax.
In the case of
), proceed to step (0-745). The control aperture value AVc and control shutter value obtained as above.
Exposure control is performed on the body side based on the shutter speed TVc.
However, in addition to that, the range of depth of field is
AF lens to cover the current subject position.
The lens drive control for shifting is also performed on the body side.
. This lens drive control will be explained with reference to Fig. 43.
Ru. In this figure, the x mark indicates the lens position (or its lens position).
The position of the main subject that will be in focus at
The solid line with marks indicates the range of depth of field. shown in the figure
As shown in the figure, when the control aperture value AVe is less than AVDEP
When the depth of field range corresponds to AVDEP
Because the range is narrower and closer than the depth of field, the main subject
Control the lens drive so that the front part is within the depth of field.
control At this time, the range indicated by the dotted line with an arrow
is out of focus. On the other hand, the control aperture value AVc
exceeds AVDEP, the entire depth of field range is
The depth of field corresponding to AVDEP is
be wider than the range. Therefore, the lens position is AVDE.
The position determined by P (when the aperture value is AVDEP, the depth of field
Lens position such that the range of is from the main subject to position ■
The lens drive is controlled so that the At this time (
1) The camera will focus on the exact position. Returning to the flowchart in Figure 41, step (0-74)
Continue the explanation from 5). After step (0-745)
is based on the zoom program line shown in FIG.
The calculation for determining the focal length fen corresponding to the subject distance is
Perform calculation (APZ calculation). That is, first, the subject distance DV (expressed in logarithm
Take out the integer part DV+ of distance information) and use this integer part DV
Access the table in ROM using + as the address,
While reading out the focal length f1 x (logarithmic value), the integer part D
An integer DV+ that is larger than V+ by l. , as the address
Then read out the focal length f2 x (logarithmic value) in the same way (step
Step 0-745 to 0-755). Next, the subject distance
Take out the fractional part DVs of DV and convert it to subject distance (DV).
The corresponding focal length f. D as fco= f+x+ (f2x f+x) X DV
a...Determine from @ (step 0-760.
0-765). Next, in step (0-770) the camera
Determine whether the posture is vertical or not, and if it is not vertical, return as is.
However, if it is vertical, the focal length is multiplied by 1.3 (logarithmically).
Therefore, we can add logl, 3 to fCD.
) Return (step 0-775). Furthermore, the values of f+x and f2x used in the calculation of the above formula 0 are as follows:
It reflects the learning results from the learning subroutine.
(See steps 0-590.0-595 in Figure 39)
. Therefore, the focal length f determined above. D also has the conclusion of learning.
results are reflected. However, the zoom program due to learning
Changes in the Lamb line (values of f, -, f2x) are shown in Figure 44.
limited to the learning scope indicated in . J2.3.31 Portrait Card Portrait card is used to take portrait photos of people.
This card is suitable for shooting shadows, and you can use this card in your camera.
When worn and photographed, the size of the person can be determined from the photographic magnification.
The camera is controlled to set the appropriate aperture value, and
Photographing is performed with a depth of field that corresponds to the size of the object. below
, I will explain the operation of this card. When this portrait card is attached to the camera, the fourth
5 Execute the reset routine shown in Figure 5 and remove this camera from the camera.
from "'Low" level to the terminal (C8CD) of the board (C8CD).
When a signal that changes to the old gh” level is sent, the fourth
6. Execute the interrupt routine shown in Figure 6. These lycees
The processing contents of the cut routine and interrupt routine are
Depth card reset routine (Figure 35) and
Since they are the same as the import routine (Figure 36),
The explanation will be omitted. Regarding the data setting subroutine shown in Figure 47,
, the learning subroutine called from this subroutine
(Fig. 49), the focal length and shooting distance to be studied are
In determining whether the shadow magnification is correct (Fig. 48), learning is performed.
Focal length f8 range. and the range of imaging magnification β for learning is 35≦f, respectively.
If the point where B≦300 1/10≦β≦1/80 is an auto-depth card (Fig. 38)
). Data settings subroutine
For other parts of the engine (Figures 47 to 49),
The same as in the case of Todepth cards (Figures 37 to 39).
Since there is, I will omit the explanation. For the AE calculation subroutine, please refer to Figure 50.
This will be explained below. When the subroutine is called, first step (P
-624), the focal length f of the lens, (step in Fig. 46)
The current focal length entered from the camera side on the P-53 is
Determine whether it is 50mm or more, and based on this determination result
Find the reference value TVH of shutter speed for camera shake detection.
Melt. That is, when f is 250 mm, T is calculated by the following formula.
Calculate VH (step P-626). zFz-16X log2fo150 +56
...@TV+=1.25X (zFz/2 56
)/16+5.875-■ However, f: focal length of the lens [mm]. The longer the focal length, the faster the shutter speed will be.
Since it is easy to cause shake, the focal length becomes longer in the above formula.
and TVs become faster. On the other hand, even with a wide-angle lens, the shutter
Give a warning if the speed becomes extremely slow.
In order to
(Step P-628). zFz-16X 10g2fp150+ 56
- @) TVH= 1.125X (ZFZ/2 5
6)/16+5°875-78 However, f: Focal length of the lens [mm]. Next, in step (P-630), the imaging magnification β is set to 1.
Determine whether it is smaller than /100, and if β≧1700
Then, set the imaging magnification based on the program line in Figure 52.
Find the aperture value AVβ from β, set it as AVx”AVβ, and proceed to step (P-670) (step P-
632-P-634). The program line in Figure 52 is
A program that provides the relationship between shooting magnification β and aperture value AVβ
line, and the corresponding aperture is set using the shooting magnification β as the address.
Write the value AVβ to E2FROM etc. and store it.
All you have to do is go. On the other hand, when β < 1/100, the main subject appears small.
Since it is difficult to distinguish from the background, the aperture value AVx is
It is assumed that the aperture value AVX is independent of the ratio β, and the value of the aperture value AVX is set to the open aperture value AV
Set as follows according to ll (Step P-636
~P-665). When AVe<3 (7) AVx=33 ≦AVs<
3.577) When AVx=AV[13,5≦AVs<
4 (D Toki AVX=44≦AV[l (7
) When AVx=AVe By setting like this
, when using a lens with a small aperture f-number, the aperture is slightly apertured.
The depth of field is increased a little so that the background is slightly blurred. The aperture value AVx obtained as above is portrait
This is the aperture value that should be set when taking pictures using a card.
However, in reality, the control limits of aperture value and shutter speed
In consideration of camera shake, the control aperture value AVC is the control shutter.
It is determined together with the speed TVc. Below, this controlled shutter speed TVc and controlled aperture value AV
The calculation procedure for , will be explained. First, in step (P-670), the exposure value EVs is
Calculate from EVs = BVs + SV and determine whether the exposure value EVs exceeds the control limit.
Step P-675, P-685), 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. vinegar
That is, the exposure value EVs is the minimum control value AVs + TVm
When it is less than in, AVc = AVll TVc = TVmin (step P-680), maximum control value AVmax
+ TVmaX, set AVc = AVmax TVc = TVma,x (step P-690). On the other hand, in the step (P-675), the exposure value EV
If s is determined to be within the control range, the aperture value is set to the maximum aperture.
Shutter speed TV when value AVll = EVS-
Find AVs, and use this shutter speed TV to detect camera shake.
Determine whether it exceeds the reference value TVH (step
P-700). As a result of this judgment, when TVsTVs
Set AVc=AVll TV, = TV and make the shutter speed as fast as possible (step
P-705). On the other hand, when TV > TVs, adjust the shutter speed to camera shake.
Aperture value AV when used as reference value for judgment = EVS TV
H, and this aperture value AV is the program line group mentioned above.
Determine whether or not the aperture value AV obtained from
P-715). As a result of this determination, when AV<AVx
is AVC = AV TVc-TVH (step P-720), so as not to cause camera shake.
while keeping the control aperture value AVo as close to AV as possible.
Ru. When AV≧AVx, set the aperture value to AV.
Shutter speed when TV""EVs AVx
This shutter speed TV is the maximum shutter speed T
Determine whether it is greater than or equal to Vmax, and if TV<TVmax
If TV≧TVmax, then AVc-EVs TVmax TVc = TVmar (Steps P-725 to P-740). With the above, the control aperture value AVc and the control shutter speed TVc are set.
is determined, and then APZ after step (P-745)
We will move on to processing the calculation, but for this we will use the auto depth car.
(Steps 0-745 to 0-775 in Figure 41)
), so the explanation will be omitted. In addition, the port report
The zoom program line for card cards is shown in Figure 51.
As shown. This card is also an auto depth card.
As in the case, the zoom program line is
Changes within the learning range shown in Figure 51
and the focal length f determined by APZ calculation
cD also reflects the results of learning. [3] Summary As explained above, according to this embodiment, the release
When the switch (S2) is turned on (steps in Figure 29)
(S~470), by the microcomputer (μC3) in the card.
Learning about zooming is performed. For example, if you are using sports cards, learning
The results are deviations from the original zoom program line
It is stored in the E2FROM built into the card as Δf.
and when the release switch (82) is turned on,
The deviation △f is the focal length due to manual zooming.
is changed based on the amount of change Δf1 (step in FIG. 32).
S-54-5 to S-555). Here, the focal length is
The amount of change △f1 is the actual focal length fe of the camera (shooting
(latest focal length at the time) and the focal length f obtained from the card. ,
fBfcn (actually it is a ratio, but the focal length is expressed as a logarithm)
), and the focal length fco
is determined on the body side using the zoom program line.
Subject distance DV (Step #1137 in Figure 20)
is the focal length associated with (step in Figure 30)
S-830 to S-870). asked in this way
The deviation △f will be used later when calculating the focal length using a card.
(Step S-860 in Figure 30), AP
Z(7)2'-ming is the original zoom program.
The entire mu line was shifted by the deviation △f after learning.
Learning outcomes based on line learning
is reflected. However, there are restrictions on the scope of learning about zooming mentioned above.
limits are imposed. In other words, the focal length by manual operation
Before changing the deviation Δf based on the amount of change in distance Δf1,
The camera's actual focal length f[l (the latest focal length at the time of shooting)
It is determined whether or not the distance (distance) is within a predetermined range (step in Fig. 32).
step S-530, step S-605 in Fig. 33)
, only if it is within a predetermined range (flag LRF=O)
The deviation Δf is changed (step S- in FIG. 32).
535). This results in too large a deviation (fco and f
(difference from e), which is not assumed in this example.
It is different from the sports scene, and this big
Changing the zoom program line based on deviation
This is not the intention of this example, and learning is not performed.
I can't get used to it. Next, think about when to use auto depth cards.
Ru. In this case, unlike the case of sports cards,
Learning outcomes are reflected in the Zoom program line itself
. That is, the data representing the zoom program line is
It is stored in the E2PROM built into the card.
(memorizes the focal length for each subject distance), the release
When the switch ($2) is turned on (steps in Figure 37)
0-470), the data representing the zoom program line.
The amount of change L in focal length due to manual zooming
= fB4co (Figure 40, Figure 39)
Steps 0-545 to 0-595 in the figure). Do it like this
The modified zoom program line is then
focal length f. Because it is used when calculating D (the fourth
Steps 0-745 to 0-775 in Figure 1), APZ (7
) Zooming is based on the modified zoom program line.
This will reflect the results of the learning. In addition, zooming when using a portrait card
Learning about is the same as for auto depth cards.
be. However, as with the sports cards mentioned above, the auto
Also regarding depth cards and portrait cards.
There are limits to the scope of learning about
(See Figures 44 and 51). i.e. manual operation
Based on the amount of change in focal length L"fe-fcn
Before changing the camera program line, check the camera's actual
Focal length fe (latest focal length at the time of shooting) and shooting
It is determined whether or not the magnification β is within a predetermined range (see Figure 39).
Step 〇-530 and step P-530 in Fig. 49,
Steps 0-605 to 0-61.5 and 4 in Figure 38
Steps P-605 to P-615 in Figure 8), these are common.
is within a predetermined range (flag LRF = 0)
The zoom program line is changed (Fig. 39)
Step 0-535 of FIG. 49, Step P-535 of FIG.
). This allows you to use auto-depth cards or portraits.
It is considered that taking pictures using a card is a special kind of shooting.
If this happens, no learning will occur. By the way, in this example, the microcomputer in the camera body
Functions are shared between the data and the microcomputer in the card.
However, all microcomputers in the camera body
It may be configured so that it is realized by Also, - in this example
is the zoom program line and the E2FROM in the card.
The learning data is stored in the camera body.
It may be stored in RAM or E2FROM. In addition, in the explanation of the above embodiment, a single-lens reflex camera is used.
As an example, the zooming mentioned above
The dynamic learning function is different from other cameras such as lens-shutter cameras.
The same applies to cameras with built-in viewfinder optical systems.
can be realized. Also, film is used as a shooting medium.
It is not limited to film cameras using CCD or MOS-
In electronic still cameras that use IC as a shooting medium
can also achieve similar functionality. As explained above, according to the camera of the present invention, the shooting conditions
The operation when performing the specified operation manually to set the
Change the control data based on the amount of change in the operating variable, i.e.
You can learn about shooting conditions, but this
The scope of learning is subject to certain limits by means of constraints.
The sea urchin is turning. Therefore, by means of constraints, this theory
The range of shooting can be appropriately restricted, and the shooting conditions can be
learning in areas where the detection accuracy of information is poor, or in special shooting locations.
It is possible to avoid learning extreme shooting conditions on the surface.
This effect can be expected. This ensures high accuracy and appropriate
Only serious learning can be done. And that learning
Shooting conditions are automatically set based on the results of
Manual operations for setting shooting conditions are often unnecessary.
It becomes. Note that if the predetermined operation is a zooming operation, the control
predetermined limits on the controlled range of focal length by means of
is now imposed. Therefore, this range should be appropriately limited by means of constraints.
The zooming is accurate and appropriate.
It is possible to configure the system so that only basic learning is performed. stop
automatically adjusts the focal length based on these learning outcomes.
is set, you can manually zoom when shooting.
is often unnecessary. (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. Figure 5 is a flowchart showing the reset routine of the in-body microcomputer in the camera system. Figure 6 is a flowchart showing the subroutine for A and F lens renormalization. FIG. 8 is a flowchart showing the routine of timer interrupt ■ to control the drive of the AF lens, FIG. 9 is a flowchart showing the AF lens stop subroutine, and FIG. 10 is a flowchart showing the eye proximity detection subroutine. , FIG. 11 is a flowchart showing the subroutine of lens communication ■,
FIG. 12 is a flowchart showing a timer interrupt routine for detecting eye proximity at predetermined time intervals.
Figure 3 is a flowchart showing the subroutine of 5ION,
FIG. 14 is a diagram showing the display contents of the display section on the body,
Fig. 15 is a flowchart showing the subroutine of lens communication ①, and Figs. 16 to 19 are card communication 1 to 1, respectively.
20 is a flowchart showing the AF sub-control subroutine; FIG. 21 is a flowchart showing the AF lens drive subroutine; FIG. 22 is a flowchart showing the exposure calculation subroutine; FIG. 23 is a flowchart showing a subroutine for determining card control. FIG. 24 is a flowchart showing the reset routine of the microcomputer in the lens in the camera system, FIG. 25 is a flowchart showing the 08 interrupt routine, and FIG. 26 is a flowchart showing the PZ subroutine for controlling 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. Flowchart 1 showing the subroutine LR for determining whether or not the sports card is within the learning range. FIG. 34 is a diagram showing the zoom program line for the 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. Figure 37 is a flowchart showing a subroutine for setting data in the auto-depth card, and Figure 38 is a 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. Flowchart showing the calculation subroutine. Figure 42 shows the AE program line for the auto-depth card. Figure 43 shows the AE program line for bringing both the main subject and background into focus when shooting using the auto-depth card. , FIG. 44 is a diagram for explaining the drive control of the F lens, and FIG. 44 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 mounted on 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 1 showing a subroutine for setting data in a portrait card, FIG. 48 is a flowchart showing a subroutine LR for determining whether the focal length and photographing magnification are within the learning range of a portrait card, and FIG. Figure 50 is a flowchart showing the learning subroutine for the boat 1 note card. Figure 50 is a flowchart showing the AE calculation subroutine for the portrait card. Figure 51 is a diagram showing the zoom program line for the portrait card. Figure 52 is a diagram showing the zoom program line for the portrait card. FIG. 7 is a diagram showing a program line that provides a relationship between photographic magnification and aperture value in a 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. (LA)...Zoom lens group. (L")... Focus adjustment lens group (AF lens). (BD)... Camera body. (LE)... Interchangeable lens. (μC1)... Microcomputer in the body. (μC2)...・Microcomputer in the lens. (μC3)...Microcomputer in the card. (S2)...Release switch. (S3)...Learning mode switch. (Ssc)...Single shooting mode/continuous shooting mode changeover switch Figure 2 (a) Figure 2 (b) Figure 2 (c) Figure 2 (d) Figure 4 Figure 16 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 15 Figure 16 Figure 1! [17 Figure 18 Figure 19 Figure 21 Figure 22 Figure 23 Figure 25 Figure 24 Figure 26 Figure 30 (Part 2) - Dimensions ~. N r - Figure 33 Figure 38 Figure 44 28355010020040Of[mml Focal Length Figure 48 Figure 50 (f02)

Claims (4)

[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, the predetermined operation for setting photographing conditions is manually performed, the manipulated variable change amount detection means detects the amount of change in the manipulated variable due to the operation, the rewritable storage means stores the control data, and the manipulated variable change amount detection means detects the amount of change in the manipulated variable caused by the operation. a changing means for changing the control content of the manipulated variable by rewriting the control data stored in the storage means based on the amount of change; A camera comprising: a restriction means for restricting a change in the control content by the change means so that a range of photographing conditions to be set does not exceed a predetermined range set in advance. (2) The predetermined range is the maximum value of the manipulated variable or/
The camera according to claim 1, wherein the range is determined by setting a minimum value and a minimum value. (3) The camera is a camera having a zooming function, and the predetermined operation for setting photographing conditions is a zooming operation, and the operation variable is a focal length. Or the camera according to claim 2. (4) The camera according to claim 3, further comprising a subject distance detection means for detecting a subject distance, wherein the control data is data representing a program line that associates a subject distance with a focal length.