JPH0398005A - Camera - Google Patents

Abstract

PURPOSE:To make the external constitution simple and to improve the operability by controlling the direction of power zooming and power focusing by one operation member. CONSTITUTION:An operation member 1 can rotate and move forth and back simultaneously and when 1st and 2nd detecting means 2 and 3 generate detection outputs, a control means 6 makes only one detection output which is generated first effective. In such a case, a 1st detecting means 2 detects the rotating operation direction of the operation member 1 and a 2nd detecting means 3 detects the forward/backward operation direction of the operation member 1; when the detecting means 2 generates the detection output, the control means 6 controls a power-zoom means 4 to perform the power zooming. Further, when the detecting means 3 generates the detection output, the control means 6 controls a power focus means 5 to perform the power focusing. Namely, the power focusing and power zooming are performed by the operation member 1. Consequently, the external constitution is simplified and the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a camera equipped with power zoom and power focus functions, and is used in film cameras and video cameras. [Prior Art] Conventionally, it has been proposed to provide a rotary operation member in the lens section of a camera and select the direction of power zoom according to the direction of the rotation operation (see Japanese Patent Laid-Open No. 62-272215). In addition, a rotary operation member is provided on the grip section of the camera body, and it can be used as an operation member for power zoom when in AP mode, and as an operation member for power zoom when in non-AP mode. Cameras are commercially available. [Problems to be Solved by the Invention] In the above-mentioned conventional technology, only one of power zoom and power focus can be performed using the rotary operation member. Therefore, in order to be able to perform both power zoom and lower focus in the same mode, it is necessary to provide two rotary operation members, which poses the problem of complicating the external configuration of the camera. Additionally, there is a problem in that operability deteriorates when the power zoom operation member and the power focus operation member are separate members. The present invention has been made in view of these points, and its purpose is to provide a camera with power zoom and power focus functions that can be operated with the same operating member without the need for mode switching. The purpose is to enable focus. [Means for Solving the Problems] In order to solve the above problems, the camera according to the present invention includes an operating member 1 that can be rotated and moved back and forth, as shown in FIG. A first detection means 2 for detecting the rotation operation direction of the operation member 1, a second detection means 3 for detecting the forward and backward movement operation direction of the operation member 1, a power zoom means 4 for performing power zoom, and a power focus The power zoom means 4 is operated so that the power zoom direction is selected according to the detected operation direction when the power focus means 5 and one of the detection means 2 (or 3) generate a detection output. , a control means 6 for operating the power focus means 5 so that the direction of power focus is selected according to the detected operation direction when the other detection means 3 (or 2) generates a detection output. It is something. Here, the operating member 1 is an operating member that can perform rotational operation and forward/backward movement operation at the same time, and when the first and second detecting means 2 and 3 both generate detection outputs, the control means 6 detects the detection output that occurs first. It is preferable to use a method that enables only the detection output. It further includes a focus detection means 7 and a selection means 8 capable of selecting an autofocus mode for operating the power focus means 5 so that the direction of power focus is selected according to the detection output of the focus detection means 7. , when the autofocus mode is selected, the control means 6 controls the power focus means 5 by operating the operation member 1.
It is preferable to use a means of prohibiting the control of [Operation] The operation of the present invention will be explained below with reference to FIG. The operating member 1 can be rotated as shown by arrow P and moved back and forth as shown by arrow Q. The l-th detection means 2 detects the rotational operation direction of the operating member 1. Further, the second detection means 3 detects the forward and backward movement direction of the operating member 1. When one of the detection means 2 generates a detection output, the power zoom means 4 is controlled by the control means 6 to perform power zoom. The power zoom 1,000-stage 4 is a lens group for variable magnification driven by an actuator (for example, a motor) to make the focal length of the photographic lens variable. The direction of the power zoom is set to the tele side (or wide side) when the operating member 1 is rotated clockwise, and set to the wide side (or tele side) when the operating member 1 is rotated counterclockwise.
When the other detection means 3 generates a detection output, the control means 6 controls the power focusing means 5 to perform power focusing. The power focusing means 5 drives a lens group for focus adjustment by an actuator to make the photographing distance variable. The direction of the power focus is set to the extension side (or retracting side) when the operating member 1 is operated in the forward direction, and is set to the retracting side (l1 (or retracting rs) when the operating member 1 is operated in the backward direction.As a result, 1 Power zoom and power focus can be performed with one operating member ■, which simplifies the external structure of the camera and improves operability.Especially, the operating member 1 is more convenient than the operating ring provided on the outer periphery of the fixed lens barrel of the lens. In this case, you can perform power zoom with the same operating feeling as rotating a conventional zoom ring.Also, power focusing can be performed with the same operating feeling as extending or retracting a lens. In this case, when the operating member 1 is operated forward, the power is focused on the extending side, and when the operating member 1 is operated backward, the power is focused on the retracting side, so that the direction of the power focusing matches the feeling of manual operation. Therefore, a good man-machine interface is achieved.In the present invention, if the rotation operation and the forward/backward movement operation of the operating member 1 can be performed at the same time, power zoom and power focus can be performed in parallel. , it is possible to change the focal length and shooting distance in a short time. However, if the camera is powered by battery power, power consumption will increase if power zoom and power focus are performed at the same time. Therefore, the first and second detection means 2, 3
Preferably, the control stage 6 is configured so that when both of the detection outputs are generated, only the detection output generated first is valid. Next, the focus detection means 7 detects the focus state of the subject and outputs signals for the lens drive amount and drive direction necessary for focusing. By operating the power focusing means 5 so that the direction of power focusing is selected according to the detection output of the focus detecting means 7, the subject can be automatically brought into focus. This mode is called an autofocus mode and can be selected by the selection means 8. When the autofocus mode is selected by the selection means 8, the control means 6 controls the power output force by operating the operation member 1. control of the access means 5 is prohibited. Therefore, in autofocus mode, only power zoom is possible using the operating member 1. Note that the power focus may be controlled by the detection output of the first detection means 2, and the power zoom may be controlled by the detection output of the second detection means 3. [Example] A single-lens reflex camera system equipped with a zoom lens will be described below as an example of the present invention. Figure 2 (L
) shows the external configuration of the camera body BD to which the present invention is applied, and FIG. The names and functions of each part are briefly explained below. Reference numeral 11 denotes a slider for turning on the main switch. When the slider l1 is in the ON position, the camera body BD is in an operable state, and when it is in the OFF position, the camera body BD is in an inoperable state.

12 is a release button, and when pressed to the first step, a shooting preparation switch S1, which will be described later, is turned on and the AF operation is started. 13 is autofocus (AF) and power focus (
This is a knob used to switch between
At the autofocus (AF) position shown in the figure, a switch S2, which will be described later, is turned on. 14 is an AF coupler,
It is rotationally driven based on the rotation of the AF motor inside the camera body BD. Next, the names and functions of each part of the interchangeable lens LE will be explained. 15 is the AF coupler. When the interchangeable lens LE is attached to the camera body BD, the convex part of the AF coupler 14 on the body side engages with the concave part of the AP coupler 15 on the lens side, and the rotation of the AF motor on the body side is transmitted via the AF coupler 14.15. The signal is transmitted to the lens side, and the focusing lens group moves to adjust the shooting distance. Furthermore, the terminals J1 to J6 on the lens side are connected to the terminals Jll to J6 on the body side. is connected to. 20 is the lens barrel of the interchangeable lens LE. Reference numeral 30 denotes an operation ring which can be moved back and forth and rotated with respect to the lens barrel 2o, and is operated to specify the power zoom by rotating the ring, and specify the direction and speed of the power focus by moving it back and forth. The details will be explained later. Next, the circuit configuration of this camera system will be explained.

Figure 3 is a circuit diagram of the internal circuit built into the camera body BD. μC1 is an in-body microcomputer (hereinafter referred to as "in-body microcomputer") that controls the entire camera and performs various calculations.

AFCT is a light receiving circuit for focus detection, and CC for focus detection
D, CCD drive circuit, and A/D that processes the output of COD.
It is equipped with a circuit that converts the data into D and supplies it to the microcomputer μC1 in the body, and connects it to the microcomputer μC1 in the body via a data path.
It is connected to 1. This focus detection light receiving circuit AFc.
Information on the amount of defocus of the subject in the distance measurement area can be obtained. LECT is an in-lens circuit built into the interchangeable lens LE, and information specific to the interchangeable lens is sent to the microcontroller μC1 in the body.
Supply to. This in-lens circuit L E CT will be explained in detail later. M1 is an AF motor that drives a lens group for focus adjustment within the interchangeable lens via AP couplers 14 and 15. The MDI is a motor drive circuit that drives the AF motor M1 based on focus detection information or power focus information, and its forward rotation, reverse rotation, and stop are controlled by commands from the microcomputer μC1 in the body. Next, we will explain the elliptical precepts related to power supplies. E1 is the battery that powers the camera body BD. Tr is a power supply transistor for supplying power for driving the zoom motor inside the lens, and has a MOS structure. GND1 is a ground line for the low power consumption section, and the lens and body are connected via terminals J+t and Jt. The analog section and digital section are separate within the body. It needs to be a ground line, but it is shown as one line in the drawing. GND2 is a ground line for the large power consumption section, and the lens and body are connected via terminals Jll and Jm. Next, we will explain the switches. S1 is a shooting preparation switch that is turned on when the release button l2 is pressed down to the first step. This switch Sl is ON
When this happens, preparatory operations necessary for photographing, such as AP operation, are performed. SM is a main switch that turns ON when slider 1■, which enables camera operation, is in the ON position, and turns OFF when it is in the OFF position. switch SM
When changes from OFF to ON, the internal microcomputer μC
A signal at the "Los" level is input as an interrupt signal to the interrupt terminal INT of No. 1. S2 is a switch whose knob 13 for switching between autofocus (A F ) and power focus (PF) is turned ON when the autofocus (AP) position is set, and turned OFF when the power focus (PF) position is set. Next, the structure for serial data communication will be explained. Three signal lines for serial communication SIN, SOU
T, SCK are terminals J ls, J s; J 14 + J 4
;J. , J s to the lens internal circuit LEcT, and when communicating with the lens internal circuit LECT, the terminal CSLE is set to ゜'Low'' level, and this signal connects the terminals J 3 , J + s. Next, Figure 4 is a circuit diagram of the lens internal circuit LECT built into the interchangeable lens LE.In the figure, μC2 is a zoom mode control built into the interchangeable lens LE. control and camera body B
This is a microcomputer inside the lens that controls data communication with D. The microcomputer μC2 is activated when the interchangeable lens LE is attached to the camera body BD and the power supply voltage VCC2 is supplied, and waits until an interrupt, which will be described later, is applied.

Here, the terminal group J. is connected to the camera body BD. ~J
, J1 is a power supply terminal for supplying power supply voltage Vcc2 for driving the zoom motor from the body side to the lens side, and J2 is a power supply terminal for supplying power supply voltage VCCI other than for driving the zoom motor from the body side to the lens side. J is a terminal for inputting a signal indicating a data communication request, J is a clock terminal for inputting a clock for data communication from the body side, and J5 is a serial input terminal for inputting data from the body side. , J6 are serial output terminals that output data to the body side, J is a ground terminal for circuits other than the motor drive circuit, and J. is the ground terminal of the motor drive circuit. Terminal J3 between interchangeable lens and body
, J l 3 When the signal for the terminal CSLE is transmitted from the in-body microcomputer μC1 to the in-lens microcomputer μC2, the in-lens microcomputer μC
2, an interrupt occurs, and the microcomputer μC2 in the lens is activated, and the interchangeable lens is designated as the object of communication with the body. ZVEN is a zoom setting encoder that is linked to the rotation of the operation ring 30 described above, and sets the direction of power zoom. DVEN is a power focus setting encoder that sets the direction of power focus in conjunction with the back and forth movement of the operation ring 30 described above. M3 is a zoom mode for driving a zoom ring (not shown). MD3 is a motor drive circuit for driving the zoom motor M3, and controls the rotation of the zoom motor M3 in accordance with a control signal indicating the motor drive direction and drive speed given from the microcomputer μC2 in the lens. Also, in response to a motor stop signal and a motor stop signal given from the microcomputer μC2 in the lens, both ends of the zoom motor M3 are short-circuited and voltage application is stopped, respectively. In the present invention, the operating ring 30 is equipped with a rotary switch for setting the direction of power zoom, and a switch that can be moved back and forth for operating the power focus. FIG. 5 is an exploded perspective view of the switch built into the operating ring 30. This switch is powered by rotating the operating ring 30. This is a switch for setting the zoom direction, and by pushing and pulling it back and forth, it becomes a switch for setting the power focus direction. Figure 6 (a), (b)
and FIG. 7 are developed views of the operating ring 30 along the circumferential direction. In the figure, 20 is a fixed lens barrel, 30 is an operation ring, and 30a
~30d is an inner diameter protrusion, 318~31d is a rectangular frame member, 3
2 is a coil spring for automatic return, and 33a to 33d are brushes. The rectangular frame member 31a is located in the small diameter portion 20a of the fixed lens barrel 20, and the rectangular frame member 3lb is located in the small diameter portion on the opposite side of the fixed lens barrel 20. FIG. 7 shows the configuration of the rectangular frame member 31a side, and the rectangular frame member 3lb side is not shown because it is symmetrical to this. Rectangular frame member 3
1a is normally pulled by a coil spring 32 arranged along the guide groove 20g, and the large diameter portion 2 of the fixed lens barrel 20 is pulled.
It is stopped and restricted by the end face of 0d. The other end of the coil spring 32 is fixed to a protrusion 20i of the fixed lens barrel 20. The inner circumference of the operating ring 30 is the large diameter portion 2 of the fixed lens barrel 20.
0d, 20e, etc., and the inner diameter protrusion 3 0a, 3 0b
are loosely fitted into the rectangular frames of the rectangular frame members 31a and 3lb, respectively. As shown in FIG. 7, the inner diameter protrusion 30a comes into almost contact with the outer end surface of the rectangular frame. This also applies to the inner diameter protrusion 30b, and in this state, the operating ring 30 is positioned in the rotational direction with a slight play. In this example, each rectangular frame member 31a,
Attach brushes 33a and 33b to 3lb, respectively,
The number of legs of each brush 3 3a, 3 3b is three. Further, a code plate made of a flexible printed board is disposed in the recess 20h to correspond to the brush 33a, and a code plate is similarly disposed for the brush 33b, but both are omitted from illustration. This brush 3
3a, 33b and the code plate mentioned above encoder ZVE
N has been completed.

We will explain the operation of this rotary switch. first,
If you hold the operating ring 30 and rotate it to the right in Fig. 7,
Engaged with the inner diameter projection 30a, the rectangular frame member 31a resists the tensile force of the coil spring 32 and rotates on the small diameter portion 2Oa until it comes into contact with the end surface of the large diameter portion 20e. and,
The brush 33a integrated with the rectangular frame member 31a moves while sliding on a code board (not shown), and switching is performed according to a preset pattern. At this time, the inner protrusion 30b simultaneously moves within the rectangular frame of the rectangular frame member 3lb;
Since the rectangular frame has a sufficiently large opening, the inner diameter protrusion 3
There is no restriction between 0b and the rectangular frame member 3lb.

Next, when the photographer releases his/her hand from the operating ring 30, the restoring force of the coil spring 32 causes the operating ring 30 to instantaneously rotate in the opposite direction and return to its original state. The same holds true for the rotation operation in the opposite direction, and the operation ring 30 can be rotated in both the left and right directions, and automatically returns to its original position when released. Note that the rectangular frame member 31 is designed so that the inner protrusions 30a and 30b can move freely even when the operation ring 30 moves back and forth.
a, 3lb are opened with a margin in the optical axis direction, and the rectangular frame members 31a, 3lb and the brushes 33a, 33b do not move when moving back and forth. The inner protrusions 30a and 30b of the operating ring 30 are separate members from the operating ring 30 for convenience of assembly. The same applies to the inner diameter projections 30c and 30d. Next, the fli of the switch that can be moved back and forth.
Let me explain about the t precepts. Reference numeral 31c is a rectangular frame member for automatic return during forward operation, and normally it is biased against the rear step portion 21 of the operation ring 30 by a torsion spring 25, as shown by the solid line in FIG. 6(a). There is. At this time, the inner diameter protrusion 30C located within the rectangular frame is in contact with the rectangular frame member 3lc, or has a slight gap therebetween. The brush 33c is fixed to the rectangular frame member 31e, and its legs are attached to the fixed lens barrel 20.
It is in sliding contact with a code board made of a flexible printed board (not shown) provided on the upper flat part 23 (FIG. 5).
When the photographer moves the operating ring 30 forward, the rectangular frame member 31c is pulled by the inner protrusion 30c and moves forward against the torsion spring 25 until it comes into contact with the stopper 22. At this time, the torsion spring 25 deforms as shown by the broken line in FIG. 6(a). Further, the brush 33e integrated with the rectangular frame member 31c moves while sliding on the code plate, and switching is performed according to a preset pattern. Thereafter, when the photographer releases his/her hand, the rectangular frame member 31c and the operating ring 30 return to their original states due to the restoring force of the torsion spring 25. During this time, the inner diameter protrusion 30d shown in FIG.
The rectangular frame has a sufficiently large opening. Further, the rectangular frames of the rectangular frame members 31c and 31cl are opened with a margin in the rotational direction so as not to interfere with the inner diameter protrusions 30e and 30d when the operation ring 30 is rotated.
Therefore, when the operation ring 30 rotates, the rectangular frame member 3
1c, 31d and brushes 33c, 33d are stationary. The automatic return mechanism during the backward operation shown in Fig. 6(b) has the same structure as the automatic return mechanism during the forward operation shown in Fig. 6(.) except for the operating direction, so the explanation will be redundant. is omitted. Brush 3 that moves during this back and forth operation
The above-mentioned encoder DVEN is ovalized by c, 3 and 3d, and the code plate on which they come into sliding contact. If an electric switch having such a structure is used, power zooming and power focusing can be easily performed with one operating ring 30, improving operability. Next, the operation of the microcomputer μC1 in the body is shown in Figures 8 to 11.
This is shown and explained in the flowchart shown in the figure. First, when the main switch SM is operated from OFF to ON, the “High”
A signal that changes from the "Los" level to the "Los" level is input to the interrupt input terminal INT, the evening lock oscillator (not shown) is activated, and the microcomputer μC1 in the body is activated by the SMOH signal in FIG.
Execute the interrupt. First, in order to indicate that the control is from the SMOH interrupt, SMON data is set in the output data from the body to the lens (#5). and,
Execute the serial communication subroutine (#10). Figure 9 shows the subroutine for this serial communication. When the same subroutine is called, the terminal CSLE is
ar” level, perform serial communication twice, and connect terminal C.
Return SLE as “″High” level (#
100~#110), The data transmitted from the body to the lens in the first communication of the two serial communications is the SMON data indicating that the main switch SM has just been turned on, and the AF mode. The data transmitted from the lens to the body is data indicating whether or not power focusing is to be performed, the direction of power focusing, and whether or not the lens is attached. Furthermore, the data transmitted from the lens to the body in the second communication is a conversion coefficient for converting the amount of defocus into the amount of lens drive, and no data is transmitted from the body to the lens. In this embodiment, the conversion coefficient is fixed regardless of the focal length, but an encoder for detecting the focal length may be provided to change the conversion coefficient depending on the focal length. After completing the serial communication subroutine at #■0 in Figure 8, #1
Step 5 determines whether the lens is attached. If it is determined in #15 that a lens is attached, the transistor Tr for zoom mode power supply is set to ONL in #20, and A is set in #22.
Determine whether it is F mode or not. If it is the AF mode in #22, it is determined in #25 whether or not the photographing preparation switch S1 is turned on. At #25, the shooting preparation switch S1 is turned on.
If so, perform focus detection and calculate the defocus amount,
The AF lens drive amount is determined using the defocus amount-lens drive amount conversion coefficient input from the lens, the lens is driven based on this, and the process proceeds to #65 (#30.#35).
If the shooting preparation switch S1 is OFF in #25, #6
Proceed to step 5. If it is not AP mode in #22, P in #40.
Determine whether or not F is in progress based on input data from the lens. If PF is in progress in #40, a power focus subroutine for driving the AF lens according to the operating direction of the lens-side operating ring 30 is executed in #50, and the process proceeds to #65. Figure 10 shows the power focus subroutine. When this subroutine is called, first, a flag LMVF indicating that the lens is being driven is set, and based on the operation direction data input from the lens, the AF lens is retracted if it is in the FAR direction, or the AF lens is extended if it is in the NEAR direction. Output a control signal to the motor drive circuit MDI,
Return (#1 2 0 to #135). If it is determined in #40 of FIG. 8 that PF is not in progress, the process proceeds to #55, where it is determined whether a flag LMVF indicating that the lens is being driven is set. If the flag LMVF is set in #55, it is assumed that the operation has been canceled to finish power focusing, and in #60 a subroutine to stop driving the AF lens is executed, and the process proceeds to #65. #55
If the flag LMVF is not set, proceed to #65. Figure 11 shows the subroutine to stop driving the AF lens. When the same subroutine is called, first the AF
In order to brake the motor M1, a signal that short-circuits both ends of the AF motor M1 is output to the motor drive circuit MDI, and waits for 10 msec to elapse (#150, #155
). Next, a signal to turn off the AF motor M1 is output to the motor drive circuit MDI, the flag LMVF is reset, and the process returns (#160.#165). If the lens is not attached at #l5 in Figure 8, #
At 17, turn off the transistor Tr for zoom motor power supply.
t, Proceed to #65. In #65, main switch SN
Determine whether or not is ON. Main switch SH with #65
If is ON, the SMON data is reset in #70, and after waiting for IQ+nsec in #71, the process proceeds to #10. Also, if main switch S is OFF, #74
After stopping the AF motor, the zoom motor power supply transistor Tr is turned OFF to enter a halt state. next,
The operation of the microcomputer μC2 in the lens is shown and explained in FIGS. 12 and 13. When the csLE signal is input from the body, the microcomputer μC2 in the lens executes the CS interrupt shown in FIG. First, serial communication is performed twice, wait for the terminal CSLE to become "High" level, and then
Determine the presence/absence of H data (#L5 to #L15)
．． If there is SMON data, a flag PZF indicating power zoom, a flag PFF indicating power focus.
Reset and proceed to #L30 (# L 2 0, #
L25). If there is no SMON data, #L20
, skip step #L25 and proceed to #L30. In #L30, it is determined whether the AF mode is on or not based on the data input from the body. If it is AP mode in #L30, reset the flag PFF in #L35, and
Proceed to step 40. If the mode is not AP mode in #30, skip step #L35 and proceed to #L40. In #L40, encoder ZVEN is read. And #L45
It is determined whether the operating ring 3o is being rotated or not.
If it is determined in #L45 that the operating ring 30 is being rotated, it is determined in #L50 whether or not power focusing is being performed using the flag PFF. This is because the rotating operation and the forward/backward movement operation of the operating ring 30 can be performed at the same time, so in this embodiment,
Priority is given to the one operated first. #L5
When the flag PFF indicating power focusing is set at 0, zoom drive is prohibited and the process proceeds to #L5.
If the flag PFF is not set at #L50, set the flag PZF indicating power zoom,
The operating direction is determined, and a control signal is output to the motor drive circuit MD3 to drive the zoom toward the telephoto side in the direction of the telephoto side, and to drive the zoom toward the wide side in the direction of the wide side.
Proceed to 5 (#L 5 5 ~ $L70). If it is determined in #L45 that the operating ring 30 is not rotated, the process proceeds to #L75, where it is determined whether or not a flag PZF indicating power zoom is set, and if it is set, the zoom Assuming that the operation to stop the drive has been released, a zoom stop subroutine is executed in #L80, and the process proceeds to #L85. If the above flag PZF is not set in #L75, #L8
Skip step 0 and proceed to #L85.

The subroutine for stopping the zoom described above is shown in Figure 13. When this subroutine is called, first the zoom motor M3
In order to apply a brake to the motor drive circuit MD3, a signal that short-circuits both ends of the zoom motor M3 is output to the motor drive circuit MD3.
Wait for +sec to elapse (#L130, #L135)
．． Next, a signal to turn off the zoom motor M3 is output to the motor drive circuit MD3, and the flag P. Reset ZF and return (#L140, #L145).

In #L85, it is determined whether or not the AP mode is selected based on the data input from the body.If it is the AF mode, the power focus operation is not performed and #L5G. :
If it is not tr, AF-T--, encoder DVEN is read in #L90. Then, in #L95, it is determined whether or not the operating ring 30 is being operated back and forth, #L9
If it is determined in step 5 that the operating ring 30 is being operated back and forth, the flag PFF is set in #L105, and the flag PFF is set in #L1.
Set the operation direction data in step 10 and proceed to #L5.
If it is determined in #L95 that the operating ring 30 is not being operated back and forth, that is, if the operating ring 30 is not being operated in any way, the flag PFF is reset in #L115 and the process proceeds to #L5. ．． In the above embodiment, power zooming is performed by rotating the operating ring 30, and power focusing is performed by rotating the operating ring 30 back and forth, but the reverse may also be used. Further, a joystick may be used instead of the operating ring, and in short, any operating member that can be operated in at least two directions (at least four directions) may be used. Furthermore, in the embodiment, the zoom lens is interchangeable, but it may also be built into the body. [Effects of the Invention] As described above, in the present invention, the direction of power zoom is selected according to the direction of one operation of the rotation operation and the forward/backward movement operation of the operation member, and the direction of the power zoom is selected according to the direction of the operation of the other operation. Since the direction of the power focus is controlled accordingly, the direction of the power zoom and power focus can be controlled with one operating member 1, which simplifies the external configuration of the camera and improves operability. be.

Further, as in the invention as claimed in claim 2, when the rotation operation and the forward/backward movement operation of the operating member are performed at the same time, if only the previous operation is enabled, it is possible to perform the bow zoom and power focus at the same time. This has the effect of preventing an increase in current consumption and an instantaneous drop in battery voltage. Furthermore, as in the invention as claimed in claim 3, when an autofocus mode is selected in which the power focus means is operated so that the direction of power focus is selected according to the detection output of the focus detection means, the operation member is Prohibiting the control of the power focus means by operation has the effect of preventing power focus from being performed in autofocus mode.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the basic configuration of the present invention, Figure 2 (
a) and (b) are perspective views showing the external configurations of a camera body and an interchangeable lens as an embodiment of the present invention, FIG. 3 is a block circuit diagram of the same camera body, and FIG. 4 is the same interchangeable lens as above. Figure 5 is an exploded perspective view of the operating ring used in the above interchangeable lens, Figure 6 (a),
(b) and Figure 7 are exploded views of the same main parts, Figures 8 to 1.
FIG. 1 is a flowchart showing the operation of the same camera body as above, and FIGS. 12 and 13 are flowcharts showing the operation of the interchangeable lens same as above. 1 is an operating member, 2 is a first detection means, 3 is a second detection means, 4 is a power zoom means, 5 is a power focus means, 6 is a control means, 7 is a focus detection means, and 8 is a selection means. ．．

Claims (3)

[Claims] (1) An operating member capable of rotational operation and forward/backward movement operation, a first detection means for detecting the rotational operation direction of the operating member, a second detection means for detecting the forward/backward movement operation direction of the operating member, and a power The power zoom is configured so that when one of the power zoom means for zooming, the power focus means for power focusing, and one of the detection means generates a detection output, the direction of the power zoom is selected according to the detected operation direction. A camera comprising: a control means for operating the power focus means so that when the other detection means generates a detection output, a power focus direction is selected according to the detected operation direction. (2) The operating member is an operating member that can perform rotational operation and forward/backward movement operation at the same time, and when the first and second detection means both generate detection outputs, the control means only enables the detection output that occurs first. 2. The camera according to claim 1, wherein the camera is a means for: (3) further comprising a focus detection means and a selection means capable of selecting an autofocus mode for operating the power focus means so that the direction of power focus is selected according to the detection output of the focus detection means, and 3. The camera according to claim 1, wherein the means is means for prohibiting control of the power focusing means by operating an operating member when an autofocus mode is selected.