JP3117399B2 - Electric zoom camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric zoom camera, and more particularly, to an electric zoom camera having an automatic zoom mode for performing zooming so that a ratio of a subject image to an image frame is constant.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a camera having an auto-zoom mode for performing zooming in accordance with a subject distance so as to keep a ratio of a subject size to a photographing image frame constant. No particular mention was made of the relationship between the mode and the manual zoom.

[0003]

A camera having the above-described conventional auto zoom mode can set the size of a subject to a predetermined size with respect to a shooting image frame. This function is convenient because you do not need to worry about zoom operation, but the size of the subject is automatically set by the operation of the camera side, so the size of the set subject is the intention of the photographer Even if it does not fit, the photographer has no choice but to shift to the shooting operation.

A camera has been proposed which can change the ratio of the size of the subject to the photographed image frame. However, since the photographer must set the ratio,
The operation becomes complicated, and it is difficult to take an immediate response according to the shooting situation, which may cause a missed shutter chance.

In view of the above-mentioned conventional disadvantages, an object of the present invention is to make it possible to set the size of a subject with respect to a photographing frame desired by a photographer in an auto zoom mode, and to perform a simple operation. An object of the present invention is to provide an electric zoom camera that can be realized.

[0006]

Power zoom camera of the present invention, in order to solve the problem] is the electric zoom camera having a remote control mode that can be shifted to a release sequence by receiving a remote control signal, based on the distance to the subject, the photographing field and auto-zoom mode setting means capable of executing the auto zoom operation for a constant ratio of the subject image with respect to the frame, the state set in the auto-zoom mode
If a remote control signal is received,
Auto zoom operation to execute the above auto zoom operation prior to
Zoom means, focal length setting means capable of setting an arbitrary focal length according to a manual operation, and receiving the remote control signal
Before setting the focal length by the focal length setting means.
Is performed, the subsequent auto zoom means
And control means for disabling .

[0007]

[0008]

[0009] Therefore, the electric zoom camera of the present invention, Li
With the remote control mode and auto zoom mode selected
In this state, an arbitrary focal length is set by the focal length setting means.
If set, drive in the auto zoom mode
The set value set by the focal length setting means.
First, after priority, even if the above remote control signal is received, auto
Control so as not to perform the frame operation .

[0010]

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.

FIG. 2 is a block diagram showing a schematic configuration of the remote control transmission circuit 60 and the camera body 61. FIG.
It is explanatory drawing which shows the frequency distribution of the noise pulse which will be radiated from a commercial power supply of 0 Hz and 60 Hz. In the figure, a remote control transmitting circuit 60 comprises a pulse switching means 51 and a pulse generating means 52. The pulse switching means 51 is a means for switching a pulse train that is not synchronized with the commercial power frequency 50 Hz or 60 Hz. By having it, interference with other cameras can be avoided, and the shooting mode can be switched. Remote control switch 5
When 9 is pressed, a pulse signal train is transmitted from the pulse generating means 52 and detected by the pulse detecting means 53 of the camera body.

The pulse detecting means 53 of the camera main body 61 uses the remote control mode setting means 54 to determine whether or not to start pulse detection. The output of the pulse detection means 53 is
The CPU 56, which is input to the standby canceling unit 55 and includes the pulse discriminating unit 57 and the photographing mode switching unit 58, is activated by the output of the standby canceling unit. The pulse discriminating means 57 invalidates the pulse input when the output of the pulse detecting means 53 is not at a predetermined pulse interval. If the interval is a predetermined pulse interval, the imaging mode is switched by the imaging mode switching means 58 in accordance with the pulse signal train.

As shown in FIG. 3, if a noise pulse due to a fluorescent lamp or the like is generated at T = 0 ms in a line l1 plotting a half cycle of 50 Hz and a line l2 plotting a half cycle of 60 Hz, as shown in FIG. , Indicates that the next noise pulse may occur at point x or. So 50Hz and 60H
It is understood that the pulse interval for avoiding the noise of z should be within the range of A surrounded by a circle in the figure.

FIG. 1 is a block diagram of a camera incorporating a camera remote control device according to the present invention. In the figure, a main CPU 1 has a ROM provided therein.
The sequential control is sequentially executed based on the program stored in the CPU, thereby controlling the operation of peripheral ICs and the like.

The AF IC 2 measures the distance to the subject by an infrared light active method, and transfers the obtained subject distance information to the main CPU 1. This AF IC 2 includes I
The light emitting and receiving devices 3, 4, and 5 configured by arranging the RED and the PSD opposite each other are connected to each other.
The distances of the three points on the photographing screen can be respectively measured by 4 and 5.

In these projectors 3, 4, and 5, if there is a variation in the base line length between the constituent elements IRED and PSD, the subject distance information obtained by the distance measurement is based on the base line length. Deviates from the distance measurement data obtained when there is no variation in Therefore, the following EEPR
Correction calculation is performed by the data stored in the OM 6 to make appropriate corrections.

The EEPROM 6 is a non-volatile storage element, and corrects an error caused by a variation in the distance measurement data or a mechanical variation in the lens position when converting the distance measurement data into lens position data during production. Adjustment data is stored in the EEPROM.

The interface IC 7 measures the brightness of the object, measures the temperature in the camera, controls the motor driver 8,
For example, reception of an infrared remote control signal is performed. The sensor for measuring the subject brightness is a light receiving element group 9 in which two light receiving elements are sealed and connected to the interface IC 7.
The sensor performs average photometry and spot photometry, and supplies the photometry result to the interface IC 7. IC7
Converts this photometric result into voltage information and outputs it to the CPU 1. Then, the CPU 1 performs backlight determination, exposure calculation, and the like based on the voltage information.

Incidentally, the measurement of the temperature in the camera is performed immediately after the power of the camera is turned on. That is, if the temperature is measured after the film is wound up, the temperature in the interface IC 7 may have risen and may not be equal to the temperature in the camera. Further, in the present embodiment, since the lens frame supporting the photographing lens expands and contracts due to the temperature, and the focusing accuracy is deteriorated, the position of the photographing lens is corrected using the temperature data. This temperature data
The present invention can be used not only for correcting the lens frame but also for correcting mechanical members that change depending on temperature, correcting IC output, and the like.

The motor driver 8 drives a film feeding motor 10, a shutter driving motor 11, and a zoom motor 12, respectively. The rotational position of each of these motors is, for example, PF for the film feed motor 10.
At detection 19, the shutter drive motor 11 is detected by the encoder 20 and the zoom motor 12 is detected by the encoder 21 and supplied to the main CPU 1. On the other hand, the motor driver 8 receives a motor selection signal from the interface IC 7 and forward / reverse rotation of the motor.
It is operated by a brake / stop signal or the like, and its drive voltage can be set to an arbitrary voltage value.

The signal light emitted from the IRED 16 externally attached to the remote control transmitting unit 13 by infrared light is received by the light receiving element 15 connected to the interface IC 7 and is photoelectrically converted into an electric signal. The electric signal photoelectrically converted by the light receiving element 15 is transferred to the CPU 1 after being subjected to waveform shaping by the interface IC 7. This CPU 1
In order to prevent the power battery from being consumed, the standby state is usually set to reduce the current consumption. However, the transfer line of the signal whose waveform is shaped by the interface IC 7 and transferred to the CPU 1 is used to release the standby state of the CPU 1. Assigned to the input terminal with the function
Even when 1 is in the standby sleep state, when the remote control signal is generated, the sleep state can be immediately released and the remote control processing can be started. The remote control transmission unit 13 is housed in the camera, and when the transmission unit 13 is removed from the camera, the RM switch 14 is switched from off to on in conjunction with the removal, whereby the CPU 1 disconnects the remote control unit 13 from the camera. We can recognize that it was done. Note that this RM switch 14
Also has a standby release function of the CPU 1.

The liquid crystal display panel 23 performs mode display, film frame number display, and the like based on signals from the CPU 1.

The data back 24 imprints a date on the basis of a signal from the CPU 1. LED 31 is an indicator lamp in the viewfinder. AF ranging end, flash emission warning,
A red-eye warning is issued. Note that red-eye is a so-called red-eye phenomenon in which the subject's eyes appear red when the subject is flashed with the strobe light 22 and photographed. Sometimes, this is a warning prompting to switch the mode to the red-eye mode described later.

The LED 32 has an L for self mode display.
ED.

A first release switch (hereinafter, referred to as a first release switch)
R1SW) 25 is a switch that operates when the release button is half-pressed. When this switch 25 is turned on, the distance measurement and photometry are performed, and the distance measurement value and the photometry value are determined by the CPU 1.
Is stored.

A second release switch (hereinafter referred to as R
Reference numeral 2SW) is a switch that operates when the release button is fully pressed. When the R2SW 26 is pressed, the extension and exposure of the taking lens are controlled based on the distance measurement value and the photometry value.

A zoom up switch (hereinafter referred to as ZUS)
A W 27 and a zoom down switch (hereinafter abbreviated as ZDSW) 28 are switches for controlling zooming of the zoom lens. When the ZUSW 27 is operated, the ZDSW 28 is operated in the long focal direction. Zooming in the short focal direction. These zooming operations are not performed at the telephoto end or the white end.

A multi-function mode switch (hereinafter referred to as SBJ)
SW is abbreviated as “SW”.
A switch for switching among a zoom mode, a continuous shooting (continuous shooting) mode, and a self mode.
Is set to the spot mode, a sensor for measuring the distance at the center of the photographing screen is selected from the light emitting and receiving devices 3, 4, and 5 in which the IRED and the PSD are arranged to face each other, and the distance is measured.
The photometry by the photometric light receiving element group 9 is also performed by selecting a spot sensor. SB
When the JSW 29 is set to the auto zoom mode, the focal length of the photographing lens can be changed based on the distance measurement value to the subject so that the ratio of the size of the subject to the photographing frame is fixed at a predetermined value. .

A flash mode changeover switch (hereinafter, referred to as a flash mode changeover switch)
Reference numeral 30 denotes a switch for switching among a red-eye emission mode, a flash off mode, a flash forced emission mode, and a multiple emission mode. First, the red-eye emission mode is a mode having a flash photography function capable of preventing the red-eye phenomenon. Since there are races in countries where this red-eye phenomenon is likely to occur, unless the flash mode is switched, the EEPROM 6 is used. Or, CPU1
In the RAM.

In the multi-emission mode, as will be described later with reference to FIG. 8, an "L" active signal is emitted four times at predetermined pulse intervals while the shutter is open. Thus, for example, the trajectory of the club of the person swinging the golf club can be continuously photographed four times.

FIG. 4 is a block diagram showing a configuration of a receiving circuit built in the interface IC 7. As shown in FIG. In the figure, when a pulse light forming a remote control signal is applied to the light receiving element 33, a photocurrent proportional to the light intensity flows through the resistor 34 and is converted into a voltage. This voltage signal is amplified by an amplifier 35, shaped by a comparator 36, and output from a terminal 37 to the CPU 1.

The photocurrent flowing through the light receiving element 33 is switched by the CPU 1 connected to the terminal 38, and is turned off for saving energy when the remote control mode is released. This switching is performed between the cathode of the light receiving element 33 and Vcc, and is not performed between the resistor 34 and the ground. Therefore, the reason will be described next.

That is, noise due to fluctuations in the power supply voltage from the CPU 1 during switching, etc., comes to the terminal 38, and this noise voltage component is divided by the impedance of the light receiving element 33 and the resistor 34, and Applied to the edge. However, the amplification factor of the amplifier 35 is 50
Since the noise is about 0 to 1000 times, this noise is sent to the CPU 1 as an erroneous output from the receiving circuit. Usually, while the impedance of the light receiving element 33 is about 1 MΩ,
Since the impedance of the resistor 34 is on the order of several KΩ, the impedance of the light receiving element is much larger. Therefore, by switching on the cathode side of the light receiving element 33, the noise at the terminal 38 can be attenuated very small by the impedance ratio.

The operation of the embodiment constructed as described above will be described with reference to the flowcharts shown in FIGS.

FIGS. 5 to 7 are flow charts for explaining the contents of the main sequence control of the main CPU 1. FIG. In the figure, after “power-on reset”, CP
Initialization of the RAM of U1 is performed by "INIT", and when a communication request is generated from an external communication device, "CHKR" is set.
Performs communication processing. Next, the adjustment data and the like stored in the EEPROM 6 (see FIG.
The operation of reading into the AM is performed by “EPRD”. The above "E
The data read into the RAM of the CPU 1 by "PRD"
Checks are periodically performed by a routine "CRCEXE" to be described later in case the data is destroyed by external noise or the like later, and "CRCCAL" generates check data for this. This is EEPROM6
The data may be read periodically from, but if the amount of data is large, the transfer time will be long and impractical.
Check data is created and then checked.

Next, the temperature in the camera is measured by "TEMP" and stored in the RAM of the CPU 1. Further, the battery check “BATCK” and the initial reset of the photographing lens “LE
NR "and zoom reset" ZMRST ".
Proceeding to "BKCK", the state of the back cover is checked. If the back cover is closed, the film is fed idly and the film is wound up by a predetermined amount.

"RWTF", "ALTF", "WDT
F "is 1-bit data stored in the EEPROM 6, and when this data is set, it means that the film was previously being rewound, idle-fed, or wound up by one frame, respectively. Even if the power of the camera is turned off during operation in each of these states, since this state is held in the non-volatile memory, each operation can be continued when the power of the camera is turned on. become.

That is, if "RWTF" is 1, "RWIN
D, and the rewind control is performed.
If “F” is 1, the process proceeds to “ALOAD” and the idle feed control is performed.
If "WDTF" is 1, the process proceeds to "OWIND" to perform one-frame winding control. And these "R
If all of "WTF", "ALTF", and "WDTF" have been reset, the routine proceeds to a routine for determining "imaging area".

In the routine for determining the "photographing area", it is determined whether or not the zoom state is in the "photographing area". If the zoom state is in the photographing area, the process proceeds to "LCDON" and the liquid crystal display panel 23 (see FIG. 1). The display is performed, and then the counter of the display limiter 90 seconds is preset by “T90SET”. By the way, in this embodiment, after the display is performed for 90 seconds for energy saving, the CPU 1 is in the sleep state (STOP),
That is, the original vibration of the CPU 1 is stopped. Next, when strobe charging is necessary, charge control is performed in "SCHRG", and thereafter, the process proceeds to "HALT" and the CPU is controlled.
1 is in a standby state. In this “HALT”, C
Although the original vibration of PU1 is in the operating state, it means that the internal program counter is stopped, so that current consumption can be reduced and power battery consumption can be suppressed as compared with the normal operating state. The effect is exhibited.

If the zoom is not in the "shooting area", the "LCD"
OFF ”to turn off the liquid crystal display and the CPU 1
To the sleep state. In general, in the “HALT”, the operation returns from the standby state after a predetermined time, or the R1S
W25, R2SW26, ZUSW27, ZDSW28, S
When a key input to the BJSW 29, FLSSW 30, RMSW 14, or the like or a remote control signal is generated, the system immediately returns to start processing. Sleep state “STO”
The operation of P "is the same except for the return after a predetermined time.

After the recovery, refresh such as port input / output setting and pull-up setting is performed by "PSET". This refresh is performed at regular intervals for 90 seconds displayed on the liquid crystal display panel 23. Therefore, even if the port setting is reversed due to external noise or the like, the port is restored after a prescribed period of time. The effect can be minimized.

Next, it is determined whether or not the mode is the "remote control mode". "USE" if not in "remote control mode"
RD "subroutine, the EEPROM 6 (FIG. 1)
), Each data indicating the camera state such as the above-mentioned “RWTF” and the like is read out.
Read in AM. In the remote control mode, an erroneous signal of the remote control is generated due to the serial communication noise at the time of reading. Therefore, the data reading from the EEPROM 6 is not performed and the back cover check subroutine "BKCK" is performed.
Proceed to. When the above-described check of the presence or absence of the back cover is performed in this subroutine "BKCK", the process proceeds to a routine for determining whether or not "the presence of a remote control signal".

If there is a remote control signal, "RMCO
The process proceeds to the N "routine to perform remote control processing.
If there is no remote control signal, go to “RMSEN” and go to RM
After recognizing the switch 14, "KEYSCAN"
To determine the key input. Here, if the remote control mode is recognized, this state is stored in the EEPROM 6. However, when a certain time has passed since the remote control mode was entered, the remote control mode is released and the RM switch 1
The remote control mode is not set until 4 is turned on again from off. This is to save the current consumed by the interface IC 7 when the remote control operation is stopped.

When the routine proceeds to the routine for determining the “photographing area”,
It is determined whether or not the zoom state is in the “photographing area”. When the zoom state is in the "photographing area", the 90-second display counter value is subtracted by "DSP90S". In the remote control mode, the remote control signal is received for a certain period of time even after the elapse of 90 seconds.
M. If the zoom state is not in the "shooting area", the flow returns to step 1 and 2 to return to the above-mentioned "LCD OFF" and "STO".
P ”is performed.

Next, "KEY INPUT" with KEYSCAN
If it is recognized, the process proceeds to "LCDON" to turn on the liquid crystal display panel 23, and then proceeds to the "CRCEXE" subroutine to execute the EEPROM stored in the RAM in the CPU 1.
It is checked whether the data of M6 has been "destructed". If the data in EEPROM 6 is "destructed",
After performing the above-mentioned "EPRD" and "CRCCAL", the process proceeds to a routine for determining whether or not the switch "R1SW" 25 to make up when the release button is half-pressed is turned on. On the other hand, if the data in the EEPROM 6 has not been destroyed, the routine immediately proceeds to a routine for determining the state of “R1SW”.

When "R1SW" 25 is ON, FIG.
The release sequence processing “R1” described in
When the USW 27 or the ZDSW 28 is on, the zoom drive processing “ZOOM” is performed. When the SBJSW 29 or the FLSSW 30 is on, the mode switching “M” is performed.
CHAN ”, and then“ display for 90 seconds ”.
Branches to 1.3. If the "remote control mode" is counting for a certain period of time, the process proceeds to "WAKIS" to set the waiting time of the HALT to be longer than that displayed during 90 seconds, and branches to 1.3. 9
By setting the waiting time of the HALT longer during the 0 second display, the effect of energy saving is exhibited.

FIG. 8 is a flowchart of the release sequence subroutine "R1" shown in FIGS. First, when the R1SW 25 is pressed or a remote control signal is received, "R1" is called as a subroutine, and when there is a communication request from an external device, communication processing is performed by "CHKR" and "AFBV" is set. The photometry and the distance measurement proceed. Then, if the zoom is not in the shooting range in “ZMRCV”, the zoom is moved to the shooting range. In "SCHRGCK", the flash charging voltage is checked to determine whether or not flash emission is possible, or to determine whether or not the flash timing needs to be corrected.

Next, in the "auto zoom" mode, the zoom is performed to the target zoom position by "AZZOOM". In the "auto zoom" mode, the zoom up switch 27 or the zoom down switch is used. 28
Is pressed, "AZMF" is set, so that automatic zooming is not performed. Next, the calculation of the extension position of the taking lens is "AFCAL" and the calculation of the exposure is "AECA".
L ".

When a remote control signal is received, "RMDS
The remote control reception display is performed at P ", but in this embodiment,
The LED also serves as the self-mode display LED 32 (see FIG. 1). On the other hand, if no remote control signal is received,
The process proceeds to a second release (R2SW ON) wait loop, in which the display in the finder "FINDD" is executed to turn on / off the display LED 31 (see FIG. 1) in the finder. If the R2SW 26 is on, the process proceeds to a routine for determining whether or not the mode is the “self mode”. "SD" for "self mode"
SP ”and count for a certain time and at the same time LED3
In 2, the self-display is performed.

Next, when it is determined in the red-eye emission mode that photographing by strobe flashing is necessary and that the red-eye effect can occur, the process proceeds to "REDEYEA" to perform one pre-emission. Next, the process proceeds to “LDRIV” to extend the photographing lens.
The pre-emission is performed several times at regular intervals by "EDEYEB".
The pre-emission is to shrink the pupil of the subject before exposure and prevent the red-eye phenomenon.

Next, the operation shifts to the shutter operation "SHUTR". After exposure, the film is wound up by one frame ("OWIN").
D "), the photographic lens extended by" LDRIV "
Reset to the initial position ("LENR"). Thus, the release sequence subroutine "R1" is completed, and the process returns to the main sequence flow shown in FIGS.

Here, the remote control signal transmitted from the remote control transmitting unit (see FIG. 1) 13 and received by the receiving circuit in the interface IC 7 will be described.

FIG. 9 shows a remote control transmitting unit 13 (FIG. 1).
FIG. 5) is a waveform diagram of a remote control transmission signal transmitted from the remote controller. Therefore, this remote control transmission signal is transmitted by the IR signal shown in FIG.
The ED 16 is driven five times to emit light, and the emitted light signal is received by the interface IC 7 and its light receiving element 15 shown in FIG.

The time relationship between these five light emission pulses is as shown in Table 1 below.

[0057]

[Table 1] As can be seen from FIG. 9 and Table 1, the pulse width TWH of the start pulse 41 is set to a constant value of 131.8 μs, and when the start pulse 41 is applied, the CPU 1 is released from the sleep state and started. And this starting pulse 41
4 code pulses 42, 4 delayed from T0 = 120 ms from
3, 44, and 45 are transmitted, and the time width T0 is a time required until the CPU 1 starts operating.

Normally, the generation cycle of a noise pulse emitted from a fluorescent lamp or the like is half the cycle of a commercial power supply, ie, 50 cycles.
It is about 10 ms at 60 Hz and about 8.3 ms at 60 Hz. When this noise pulse is input to the receiving circuit, the noise signal appearing at the output is considered to be generated at intervals of an integral multiple of the period. This is because the noise level fluctuates up and down with respect to the determination level inside the receiving circuit. Therefore, the interval between the remote control signal pulses is set to 45.8 ms and 54.2 ms so that they do not coincide with an integral multiple of the period of the noise pulse. Accordingly, when the pulse interval is different from the set value, the pulse interval is ignored, so that the noise pulse can be discriminated from the remote control signal. The above is the gist of the present invention.

The transmission interval is provided not only at T1 but also at T2 and T3 for the purpose of providing a plurality of transmission codes by this combination, but in order to reduce the probability of malfunction due to external noise other than 50 Hz and 60 Hz. But also. That is, this transmission unit can transmit 2∧3 = 8 types of pulse trains (where ∧ represents a power), thereby defining a plurality of camera modes and avoiding interference with other cameras. Can be.

FIG. 10 is a flowchart of remote control reception. In the figure, when the CPU 1 is started by a start pulse 41 (see FIG. 9), a subroutine "RMCON" is called. First, after resetting the pulse counter N built in the CPU 1 to 0, the timer for measuring the pulse interval is reset and started. Then, code pulses 42, 43, 44, 45 following the start pulse 41
Is determined, that is, the falling of the "remote control signal" is checked. If this does not come, the "limiter" determination is made. The limiter is set to about 60 ms, and when the limiter overflows, it returns and returns to the main flow.

When the falling of the remote control signal is detected, the pulse counter N is incremented and the pulse counter N is incremented.
If the value of the counter N is less than 4, "save the timer value" and return to "timer reset start" again. When N becomes 4, that is, when the trailing edge of the last code pulse is detected, the timer value is saved, and the saved timer value is compared with the transmission intervals T1, T2, and T3 shown in Table 1. The transmission interval T0 is ignored because the startup time of the CPU 1 varies.

As a result of comparison, if they do not match, it is determined that noise is present, and the process returns to the main flow. If they match, the "mode setting" of shooting in the camera is performed, and then the release sequence subroutine "R" shown in FIGS.
1 ". The above-mentioned shooting mode is, for example, a CP.
Switching is performed after U1 receives a remote control signal, that is, shifts to a release sequence, or shifts to a release sequence with a delay.

[0063]

According to the present invention as described above, according to the present invention, O
Even if the zoom mode is set,
It is possible to provide an electric zoom camera that does not escape
I can .

[Brief description of the drawings]

FIG. 1 is a block diagram of an electric zoom camera according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a remote control transmission circuit and a camera body of the embodiment.

FIG. 3 is an explanatory diagram showing a frequency distribution of noise pulses radiated from a commercial power supply of 50 Hz and 60 Hz in the embodiment.

FIG. 4 is a block diagram of a receiving circuit incorporated in the interface IC 7 shown in FIG. 1 in the embodiment.

FIG. 5 is a flowchart illustrating a part of sequence control in the main CPU shown in FIG. 1 in the embodiment.

FIG. 6 is a flowchart illustrating another part of the sequence control in the main CPU shown in FIG. 1 in the embodiment.

FIG. 7 is a flowchart illustrating still another part of the sequence control in the main CPU shown in FIG. 1 in the embodiment.

FIG. 8 is a flowchart of the release sequence subroutine “R1” in FIG. 5 in the embodiment.

FIG. 9 is a waveform diagram of a remote control transmission signal transmitted from a remote control transmission unit 13 in the embodiment.

FIG. 10 is a flowchart of remote control reception in the embodiment.

[Explanation of symbols]

 2 AF IC 12 Zoom motor 27 Zoom up switch 28 Zoom down switch 29 Multifunction mode switch

Continuation of the front page (56) References JP-A-2-201328 (JP, A) JP-A-1-296208 (JP, A) JP-A-61-38917 (JP, A) JP-A-63-192031 (JP) , A) JP-A-63-172243 (JP, A)

Claims (1)

(57) [Claims] 1. An automatic zoom camera having a remote control mode capable of receiving a remote control signal and allowing a transition to a release sequence, wherein the ratio of a subject image to an image frame is kept constant based on a distance to the subject. An auto zoom mode setting means capable of executing an operation, and the remote control in a state where the auto zoom mode is set.
If a release signal is received,
Auto zoom to execute the above auto zoom operation before
Means, a focal length setting means capable of setting an arbitrary focal length according to a manual operation, and the focal length setting means before receiving the remote control signal
If the above focal length setting is made by
Control means for disabling the automatic zoom means .