JPH1051699A - Image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct camera-shake in all the interchangeable lenses. SOLUTION: In the image photographing device provided with a device main body mounting a CCD image sensor C21, etc., and a main lens L which can be attach/detach-interchanged at this device main body an provided with a function for correcting camera-shake at the time of image pickup, the camera- shape correcting function is satisfied with an electronic camera-shake correcting mechanism executed by varying the image segmenting area of the CCD image sensor C21 to correct camera-shake in all the interchangeable lenses.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image photographing apparatus typified by a still camera, a video camera, or a handy type camera having both functions, and more particularly, to an improvement in a camera shake correcting function at the time of photographing. .

[0002]

2. Description of the Related Art In recent years, a camera having both a silver halide photography function and a video photography function, for example, a camera body for silver halide photography, but by taking out a finder portion, it is possible to perform both silver halide photography and video photography. In the case of this conventional example, the camera is not equipped with a camera shake correction function, realizing more accurate and excellent image quality not only for static subjects but also for dynamic subjects. There was difficulty in doing.

Conventionally, as an image photographing device having a camera shake correction function, for example, a video camera of an interchangeable lens type, which does not have a camera shake correction function on the device body side, and has an optical camera shake correction function ( (A function of correcting camera shake by shifting the lens from the optical axis), and by mounting an interchangeable lens, the camera shake can be corrected by operating a switch provided on the lens side. Is known.

[0004] As another conventional example, there is known a video camera having a general electronic or optical camera shake correction function, which cannot be replaced with a lens.

[0005]

However, with respect to the camera shake correction function in the former lens interchangeable video camera as in the conventional example, if it is desired to satisfy the camera shake correction in all of the interchangeable lenses, all of the interchangeable lenses are required. Needs to be equipped with an optical image stabilization mechanism.
For this reason, there arise problems such as a high product cost and an increase in the size of the lens.

Further, in the case of the latter conventional example, since the lens can not be exchanged even if both electronic and optical camera shake correction functions are provided, an operation for responding to various kinds of image expression by the lens work is performed. There is a problem with sex.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In a camera or the like mainly having both functions of a still camera and a video camera, the camera shake correction function is improved by improving the camera shake correction function. It is an object of the present invention to provide an image photographing apparatus capable of responding to various kinds of video expressions by simple operations.

[0008]

In order to achieve the above object, the present invention has an apparatus main body in which an image pickup device is provided, and a photographing lens which can be attached to and detached from the apparatus main body. In an image photographing apparatus having a function of correcting, the image stabilization function is configured to be satisfied by an electronic image stabilization mechanism performed by changing an image cutout area of the image sensor, so that all the interchangeable lenses can be used. Camera shake correction becomes possible.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration diagram of the present embodiment. As shown in FIG. 1, the image photographing apparatus according to the present embodiment includes a camera body C, a main lens L, and a lighting and flash generating device (hereinafter, referred to as flash and light) F. In addition, a video imaging optical system and a silver halide imaging optical system, which will be described later, are configured by common components.

In the description of the present embodiment, C is attached to the camera body C, L is attached to the main lens L, and F is attached to the flash-and-write F side.
The COP is attached to the configuration of the operation unit COP provided on the camera body C side to facilitate comparison between the drawing and the description.

In this embodiment, the camera body C and the main lens L, and the camera body C and the flash and light F are shown separately. However, in the present invention, the camera body C and the flash and light F are formed separately. The one in which F is integrated is also included.

FIG. 2 schematically shows the configuration of the optical system according to the present embodiment. In FIG. 2, light from a subject passes through a main lens L, the amount of light is controlled by a main lens aperture L11, and a pellicle mirror C04 functioning as an optical path dividing unit has a first optical path reaching a film C08 via a shutter C07 and a pellicle. The light is split from the first optical path by the mirror C04, and is split into a condenser lens C10, a reflection mirror C11, and a second optical path from the ND filter C13 to the relay lens C14. AX is an optical axis directed from the subject to the main lens L.

The amount of light from the subject that has passed through the second optical path and reached the relay lens C14 is controlled by a relay aperture C18, passes through an optical low-pass filter C16 and an IR cut filter C17, and functions as a photoelectric conversion unit.
The light reaches the CD image sensor C21. Although the CCD image sensor C21 is shown as a single plate in FIG. 2, a multi-plate type may be used.

The first optical path is an optical path for still photography using a silver halide film, and the second optical path is an optical path for movie photography using a video recording medium. As shown in the figure, on the camera body C side, silver halide photographing units C06 to C09 as first imaging means using a silver halide photography method.
And video signal photographing sections C21 to C27 as second image pickup means by electrophotography.

Returning to FIG. 1, first, the configuration of the main lens L will be described. L01 and L03 are operation rings that are rotated by the user's hand, L01 is a focus operation ring for operating a focus, and L03 is a focus operation ring. This is a zoom operation ring for operating the zoom. L13 is a fixed cylinder, L02 and L04 are operation ring state detection units for detecting rotation of the operation rings L01 and L03, respectively, and are usually constituted by encoders.

L05 is a focus detection unit for detecting the focal length of the main lens L, L06 is a lens microcomputer which is an arithmetic control unit on the main lens L side, and L07 is a zoom microcomputer for performing a zoom operation of the main lens L. The motor L08 is a zoom motor monitor for detecting the rotation state of the zoom motor L07, and is composed of, for example, a photo interrupter.

L09 is a focus motor for performing a focus operation of the main lens L, L10 is an AF / MF switch button for switching between auto focus and manual focus, L11 is a main lens aperture, L1
Reference numeral 2 denotes a main lens aperture control unit. Main lens aperture control unit L
Reference numeral 12 includes a stepping motor for operating the aperture and an aperture state detection unit.

Focus and zoom operation rings L01, L0
Numeral 3 is rotatably fitted to the outer peripheral surface of the fixed barrel L13, so that it can rotate around the optical axis of the main lens L. Then, a power focus operation can be performed by rotating the focus operation ring L01, and a power zoom operation can be performed by rotating the focus operation ring L03.

L14 is a gyro for detecting camera shake, L15
Is a camera shake correction lens, L16 is a camera shake correction lens L15
The actuator L1
6, the camera shake signal from the gyro L14 is received,
The camera shake is optically corrected by shifting the camera shake correction lens L15. Note that the gyro L14 having the same function (camera shake detection unit C03) may not be provided on the camera body C side.

Next, the configuration of the camera body C will be described. Reference numeral C01 denotes a camera microcomputer which is an arithmetic control unit of the camera body C, and communicates with the main lens L via a communication / power supply contact C30. To exchange information,
The flash operation control unit F is connected to the flash and write F via a hot shoe C20 as a flash contact.
01 and communicating information. FIG. 3 shows the appearance of a hot shoe C20 for mounting an external flash and a light.

Reference numeral C05 denotes an AF auxiliary mirror provided behind the pellicle mirror C04, and the main lens L
The light of the subject that has passed through is split by the pellicle mirror C04, passes through the first optical path, is further split by the AF auxiliary mirror C05, and is guided to the focus detection unit C02. The focus detecting section C02 transmits the focus information to the camera microcomputer C01, and the focus information processed by the camera microcomputer C01 is transmitted to the lens microcomputer L06. Motor L09
Is driven to perform focusing.

A shutter driving unit C06 controls opening and closing of the shutter C07 according to a command from the camera microcomputer C01. In other words, the camera microcomputer C01 uses the shutter drive unit C06 based on information from the operation unit COP, the luminance detection unit C12, and the like.
To the command signal. C08 denotes a silver halide film member, on the film surface of which a subject image is exposed by light obtained by opening and closing the shutter C07 through a first optical path, and forms a latent image. C09 denotes a film feed control unit that performs film feed and rewind by driving a built-in motor.

The light split by the pellicle mirror C04 and passing through the second optical path passes through the condenser lens C10, the reflection mirror C11, the ND filter C13, and the relay lens C14.
Optical system including the optical low-pass filter C16, I
CCD image sensor C via R cut filter C17
It is led to 21. The reflection mirror C11 is partially a semi-transmissive mirror, from which part of the light is guided into the luminance detection unit C12 to detect the luminance of the subject.

Reference numeral C15 denotes an ND filter control unit, which is a silver halide film member C08 mounted in the camera body C.
The ND filter C13 is controlled by the ND density information set on the camera microcomputer C01 side based on the sensitivity difference between the CCD image sensor C21 and the brightness of the subject detected by the brightness detection unit C12. A relay diaphragm C18 is provided in the relay optical system, and a light amount guided to the CCD image sensor C21 is controlled by a relay diaphragm controller C1.
9 is controlled.

The CCD image sensor C21 receives a command from the camera microcomputer C01.
The light from the subject is photoelectrically converted by the drive pulse from the drive pulse generator C23. The photoelectrically converted electric signal is
After being sent to the imaging processing unit C22 and subjected to analog processing such as subsampling, it is A / D converted and sent to the image processing unit C24.

The image processing unit C24 includes a processing unit for converting γ, white balance (WB), and luminance / color difference (Y / C) signals, a memory unit for recording image data from the processing unit, and a camera unit. Microcomputer C01
An arithmetic control unit for performing image processing according to a command from
A memory unit for recording an image signal from the arithmetic control unit,
The image signal processed by the image processing unit C24 includes a viewfinder unit C27, a recording / reproducing unit C25, and an external output port also shown in FIG. It is sent to C32. In FIG. 1, the transmission line between the image processing unit C24 and the external output port C32 is omitted between a and a for convenience of display.

The viewfinder C27 comprises a finder comprising a liquid crystal finder and a CRT, and a converter for converting an image signal from the image processor C24 to drive the display, and displays images. Since the view finder section C27 shown in the figure is composed of a liquid crystal finder, it is hereinafter referred to as an EVF section. C35 is an operation display unit, which is a large liquid crystal display panel C3 shown in FIGS.
5A and a lamp C35B shown in FIG.
The information on the operation of the OP is displayed.

The recording / reproducing conversion unit C25 encodes the image signal from the image processing unit C24, the audio signal from the audio processing unit C31, and various signals from the camera microcomputer C01 into a recording format. send. C28 is a recording medium, which can use a magnetic tape, a magneto-optical disk, a solid-state memory (RAM), or the like.

Reference numeral C36 denotes a recording medium driving unit which drives a recording medium C28 such as a magnetic tape or a magneto-optical disk. The signal sent to the head section C26 is recorded on the recording medium C28 driven by the recording medium driving section C36. Similarly, data recorded on the recording medium C28 is read out by the head unit C26, decoded by the recording / reproducing conversion unit C25 to reproduce image signals, audio signals, and various signals, and transmitted to the image processing unit C24 and the audio processing unit C31. Send out. For convenience of explanation, in this embodiment, the recording medium C28 is represented by a cassette tape loaded with a magnetic tape, if necessary.

Audio is picked up by a stereo microphone C34 provided at an appropriate position in front of the camera body C as shown in FIG. 5, and is processed by an audio processing unit C31. The audio signal processed by the audio processing unit C31 is transferred to the recording / reproducing conversion unit C2.
5, the speaker C33, and the output port C32.
In FIG. 1, the audio processing unit C31 and the microphone C3
The transmission line between 4 and bb is omitted for convenience of display. C29 is a battery provided on the camera body C side, and supplies power to the camera body C and the main lens L.

Reference numeral C03 denotes a camera shake detection unit which detects a camera shake of the entire camera on which the main lens L is mounted, and transmits a detection signal to the camera microcomputer C01. The camera shake correction in the video signal photographing unit controls the read area of the CCD image sensor C21 based on this detection signal. The main lens L shown in FIG.
An example in which an optical camera shake correction function is mounted but a lens not mounted is mounted is also shown. The camera shake correction will be described later in detail.

Next, the operation unit COP will be described with reference to the external views of the apparatus of this embodiment shown in FIGS. 3 to 6. In FIGS. 3 to 6, COP09 is an operation mode changeover switch also serving as a main switch. By operating the switch COP09, OFF, PM, Ph, M
Six operation modes, v, V, Sv, and E, can be selected.

That is, the operation mode changeover switch C
When OP09 is set to OFF, the entire device is powered off.
In addition to being able to be in the F state, when set to PM, it will be in a simultaneous shooting mode that can shoot video and silver halide photography at the same time, in Ph will be in silver halide shooting mode that can shoot silver halide, and in Mv will be video video V is a video playback mode for playing back recorded video, V is a still video shooting mode that can shoot video still images, and E is a video shooting mode that can record video still images. It can be switched to an edit mode for rewriting existing information.

COP01 is a release button for photographing silver halide. COP02 is a switching dial for switching the aperture AV and shutter speed TV and for switching the mode during shooting of silver halide and video. By turning this switching dial COP02 while pressing a mode button COP11 described later, You can select the shooting scene,
By turning this switching dial COP02 while pressing a program button COP06 to be described later, an A (aperture priority) mode, an S (shutter speed priority) mode, and an M (manual) mode can be selected.

COP03 is a deck open button for taking out a cassette tape C28 as a recording medium. By operating this button COP03, the grip portion is opened and the cassette tape C28 can be attached and detached.
COP04 is video shooting mode (Mv), simultaneous shooting mode
The operation button functions as a fade button for starting fade-out in (PM), and functions as a trigger button for still image preview in silver halide shooting mode (Ph) and still video shooting mode (Sv).

COP05 is a silver halide photography mode (Ph),
A red-eye reduction button for setting an action for reducing red-eye when using a flash in the still video shooting mode (Sv),
COP06 is a program button, and when used alone, sets the shooting mode to program. Simultaneous shooting mode (PM), silver halide shooting mode (Ph),
Video shooting mode (Mv), still video shooting mode (S
With v), A (aperture priority) mode, S (shutter speed priority) mode, and M (manual) mode can be selected.

COP07 is a video screen changeover switch, COP08 is a screen size changeover switch during silver halide shooting, COP10 is a film cartridge loading,
This is a film cartridge replacement button for attaching and detaching.
COP11 is a mode button, and is used simultaneously with the above-mentioned mode switching dial COP02 to be used in simultaneous shooting mode (PM), silver halide shooting mode (Ph), video shooting mode (Mv), and still video shooting mode (Sv). Used to set a scene select mode such as a portrait or sports mode. The COP 12 is a lens replacement button for removing the main lens L from the camera body C.

The COP 13 is a zoom button for changing the focal length of the main lens L, like the zoom ring of the main lens L. The COP 14 is a recording on / off button for controlling start and stop of recording on the recording medium C28 in the simultaneous photographing mode (PM) and the video photographing mode (Mv), and a silver halide photographing mode (Ph) and a still video photographing mode. (Sv)
At this time, by pressing the operation button COP04 while holding down the button COP14, an image of the aperture open state can be displayed as an EVF, and M (manual)
In the mode, when the switching dial COP02 is switched while pressing the button COP14, the AV can be switched.

The COP 15 is an on / off button for image stabilization control in the simultaneous shooting mode (PM) and the video shooting mode (Mv). This button is used in the silver halide shooting mode (Ph) and the still video shooting mode (Sv). When the mode switching dial COP02 is switched while pressing the COP15, the exposure can be corrected. The COP 16 is a first liquid crystal unit pop-up button. By operating this button COP 16, the liquid crystal unit constituting the EVF C27 pops out, the grip is unlocked, and the EVF C is released.
27 can rotate around the camera body C together with the grip, so that not only the eye level but also the waist level can be photographed.

The COP 17 is a forced flash button of a flash in the silver halide shooting mode (Ph) and the still video shooting mode (Sv). The COP 18 is an on / off button for displaying a message on the EVF unit C27. COP19 is
Adjustment of volume in V mode and video on EVF section C27
(Brightness, color, etc.) COP20
Is a second liquid crystal unit pop-up button. By operating this button, the liquid crystal unit constituting the EVF unit C27 is raised in the vertical direction, and the silver halide shooting mode is set.
(Ph) and waist level shooting in the vertical position in the still video shooting mode (Sv).

The COP 21 is an auto-rewind button, and the button COP 21 enables rewinding in the middle of the film. COP 22 is a silver halide shooting mode (Ph),
A single shooting / continuous shooting / self-timer button for switching between single shooting, continuous shooting, and a self-timer in the still video shooting mode (Sv). 5 and 6, C4
Reference numeral 0 denotes a cover of the battery storage unit, and C41 denotes a tripod hole.

FIG. 12 shows an example of a large liquid crystal display panel C35A of the operation display section C35. This large liquid crystal display panel C35A
As shown, the camera operation mode display, tape running counter, date display, shutter speed display, exposure compensation display, red-eye reduction display, aperture value / exposure compensation value display, mode display, battery capacity display, self-timer mark, A film counter, a patrone mark, a wireless flash display, a winding mode display, a shooting scene select display, a manual focus display, and the like are provided.

In the shooting scene selection display, when conditions such as portrait, commemorative shooting / scenery, close-up, sports, night view portrait / night view, etc. are arbitrarily selected, the display is turned on. Further, FIG.
The lamp C35B shown in FIG. 7 emits light when a self-timer or red-eye reduction is performed.

In the present embodiment, as described above, the photographing modes include the simultaneous photographing mode (PM) and the silver halide photographing mode.
(Ph), video shooting mode (Mv), and still video shooting mode (Sv).
Also, regarding the interchangeable lens for photography, which is the main lens L,
Two types of lenses, a lens having an optical camera shake correction function and a lens not having the same function, can be mounted.

When the camera shake correction control button COP015 is turned on in the state where the main lens L is mounted, the camera shake correction function is operated. According to the combination of each mode and the main lens L which is an interchangeable lens, Various functions of the camera shake correction mode are set by the function of the electronic camera shake correction function of the camera shake detection unit C03 and the function of the optical camera shake correction function of the main lens L, which is an interchangeable lens. Table 1 below shows a specific control example.

[0046]

[Table 1]

In Table 1 above, the initial setting mode when the interchangeable lens is equipped with a camera shake correction function is marked with *. To change the image stabilization control, use E
Menu button C arranged near VF section C27
The change or the change of the initial setting can be performed by calling the menu by OP23. Further, when the remaining amount of the battery C29 becomes smaller than the specified value, the power saving mode may be automatically changed to the power saving mode.

The operation when the camera shake correction function is not mounted on the interchangeable lens as the main lens L is as shown in Table 1, as shown in the video shooting mode (Mv) and the simultaneous shooting mode (PM).
In the still video shooting mode (Sv), camera shake is corrected by the electronic camera shake correction mechanism on the apparatus main body side, but in the silver halide shooting mode (Ph), the camera shake correction function does not operate.

The operation when the camera shake correction function is mounted on the interchangeable lens as the main lens L will be specifically described. When the operation mode changeover switch COP09 is set to the video shooting mode (Mv), If the camera shake correction is set in the performed video shooting mode (Mv), the control mode is as set. If the camera shake correction is not set, the camera shake correction control on / off button COP15 is turned on. The camera shake correction mode is set.

In this case, the initial setting is an electronic camera shake correction function, and the camera shake correction operation is performed regardless of whether recording is on or off. Then, when the amount of camera shake becomes large and correction cannot be performed only by the electronic camera shake correction function, the optical camera shake correction function is also automatically operated, and correction is performed according to the degree of camera shake at that time.

When the operation mode changeover switch COP09 is set to the silver halide photography mode (Ph), if the camera shake correction function has been set in the previous silver halide photography mode (Ph), the control mode is as set. If not set, the camera shake correction control on / off button COP1
By turning on 5, the camera shake correction mode is set.

In this case, the initial setting is instantaneous driving by the optical camera shake correction function on the lens side. However, the operation does not start when the switch S1 of the release button COP01 is turned on, starts when the switch S2 is turned on, and starts when the shutter is closed. finish. For this reason, an effect of saving power consumption is generated.
The camera shake correction effect cannot be confirmed on the F section C27. When the optical constant driving is selected by the menu button COP23, the operation starts when the switch S1 of the release button COP01 is turned on, and ends when the shutter is closed.

In the simultaneous shooting mode, when performing after-view for confirming the image at the time of silver halide shooting with a video image, at least almost the same shutter speed is required for video and silver halide, but optical camera shake correction is performed. As a result, the range of shutter speeds that can tolerate camera shake due to silver halide is widened, and the range of selection of the AE program is widened. FIG. 8 shows an operation procedure of camera shake correction in the simultaneous shooting mode (PM). When the operation mode switch COP09 is set to the simultaneous shooting mode (PM), the previous simultaneous shooting mode (P
If the image stabilization is set at the time of M), the control mode is as set, and if not, the image stabilization control on / off button C is set at step # 5.
When the OP 15 is turned on, a camera shake correction mode is set. In step # 10, it is determined whether or not the interchangeable lens is a lens with an optical camera shake correction function. If the interchangeable lens does not have the optical camera shake correction function, the process proceeds to step # 15.

If the lens has an optical camera shake correction function,
Initial settings are made in step # 20. This initial setting is an instantaneous drive using both an electronic type and an optical type. In this case, the electronic image stabilization operation is performed regardless of whether recording is on or off. Further, the optical camera shake correction at the time of silver halide photography starts when the release button COP01 is turned on by the switch S2, and ends when the shutter is closed.

If the amount of camera shake becomes large during video shooting and cannot be corrected only by the electronic camera shake correction function, the optical camera shake correction function is also operated to perform camera shake correction. When the electronic image stabilization function of step # 35 is selected by the menu button COP23 in step # 30, the electronic image stabilization operation is performed irrespective of ON / OFF of the recording, but the image stabilization operation at the time of silver halide shooting is not performed. I can't.

At step # 30, the menu button COP2
If the optical correction function of step # 45 is selected in step 3, the recording is turned on / off, and the release button switch S
1, regardless of whether S2 is on or not, the optical camera shake correction operation is performed. Further, during video shooting, if the amount of camera shake becomes large and correction cannot be performed only by the optical system, the electronic system automatically operates and performs correction.

In the simultaneous shooting mode (PM), when the exposure control is set to the program AE and a function such as after-view for monitoring a simultaneous shooting silver halide photograph with a video image is used, the video shooting unit and the silver halide shooting In some cases, it is necessary to make the shutter speeds of the imaging units uniform. By the way, when the electronic and optical image stabilization is selected, the initial setting is a low-speed shutter program (step # 5).
0). If optical camera shake correction cannot be performed, it is necessary to increase the shutter speed during silver halide photography (step # 55). In other words, the shutter speed is generally considered to be 1 / focal length (unit mm) sec, but the basic shutter speed for video shooting is 1/60 sec, so giving priority to video images or correcting camera shake Must be selected.

In this case, it is considered that the occurrence of the sensation in the video image caused by the high-speed shutter (the moving image looks awkward, such as a so-called dropped frame) is acceptable to some extent, but the blurred photograph is acceptable. I can't get it. For this reason, a high-speed shutter program is usually employed (step # 60). in this case,
The image stabilization system may be any of an optical type, an electronic type, and a combination of an electronic type and an optical type (step #).
65). However, in the present embodiment, when an interchangeable lens equipped with an optical correction mechanism is mounted, a camera shake photograph does not occur even if silver halide photography is performed at a shutter speed of 1/60 sec, so a low-speed shutter (for example, shutter speed = 1/60 sec) (step # 70).

FIG. 9 shows an example. In this example,
The initial setting of the AE program when the optical or electronic / optical combination is selected for the camera shake correction is a low-speed program (step # 25 in FIG. 8). The initial setting when the electronic camera shake correction is selected is a high-speed program (step # 40 in FIG. 8). Of course, this setting can be changed by the menu button COP23.
Conversely, if the low-speed shutter program is selected while the camera shake correction control button COP15 is on (step # 70 in FIG. 8), the camera shake correction is used both electronically and optically (step # 75 in FIG. 8). If the optical correction lens is not mounted, the high-speed shutter AE program is executed as in step # 15.

Next, the operation mode changeover switch COP09
Is set to SV, the previous still video mode (S
If the camera shake correction is set at the time of v), the control mode is as set. If the camera shake correction is not set, the camera shake correction mode is set by turning on the camera shake correction control button COP15. The initial setting is an instantaneous drive using both the electronic and optical systems, and the electronic camera shake correction operation is performed regardless of whether the switches S1 and S2 of the release button COP01 are on. Optical image stabilization is achieved with the release button COP
When the switch S1 of 01 is not turned on, the operation does not start. When the switch S2 is turned on, the operation starts. When the electronic shutter is closed, the operation ends. For this reason, not only power saving but also a camera shake correction effect on the finder can be confirmed.

The features of the image stabilizing function having the above-described structure will be described.
Regarding the image stabilization function of the image photographing apparatus in which (Mv) can be set, it is necessary to mount an optical image stabilization mechanism on all the interchangeable lenses if all the interchangeable lenses are to satisfy the image stabilization. Is expensive,
Problems such as a large lens occur.

On the other hand, in the present embodiment, the apparatus main body comprises the above-mentioned camera shake detecting section C03, camera microcomputer C01, CCD image sensor C21, etc., and the image cutout area of the CCD image sensor C21 is changed. Since the electronic camera shake correction mechanism is mounted, camera shake correction can be performed for all interchangeable lenses without increasing the size or cost of the lens.

In the electronic camera shake correction mechanism, since a part of the CCD image sensor C21 is used for correction, the resolution of the output image may be deteriorated. However, the resolution is not deteriorated by the optical system. For this reason, in the present embodiment,
Detects whether or not the mounted interchangeable lens is equipped with an optical image stabilization mechanism, and uses an optical image stabilization with less deterioration when using an interchangeable lens with an optical image stabilization function. I did it.

The optical image stabilizing mechanism can easily obtain high image quality, but has a disadvantage that the power consumption is larger than that of the electronic image stabilizing mechanism. Therefore, it is detected whether or not an optical image stabilization mechanism is mounted on the mounted interchangeable lens, and the image stabilization when the interchangeable lens having the optical image stabilization mechanism is mounted is optical image stabilization, Either of electronic image stabilization can be selected. Thus, for example, when the power saving mode is set, the power consumption can be suppressed by adopting the electronic image stabilization mechanism.

The image stabilizing function of the image photographing apparatus of this embodiment, which can shoot a lens in which the lens can be exchanged, and the camera which can shoot a video,
In order to satisfy the camera shake correction, it is necessary to mount an optical camera shake correction mechanism on all the interchangeable lenses, but problems such as high cost and an increase in the size of the lens occur. Therefore, as described above, by mounting an electronic image stabilization mechanism for video shooting on the apparatus main body side, camera shake correction can be performed for all interchangeable lenses without making the lens large or expensive in video shooting. I made it possible.

Further, it is detected whether or not the mounted interchangeable lens has an optical image stabilizing function. When an optical image stabilizing lens is mounted, the electronic image stabilizing mechanism is replaced with an electronic type and an optical type. Since there are two conveniences, the camera shake correction when an interchangeable lens with an optical camera shake function is mounted can be performed by using an optical camera shake correction mechanism without image quality deterioration, or by using an optical camera shake correction mechanism or an electronic camera shake Any of the correction mechanisms can be selected arbitrarily.

As described above, according to the present embodiment, the shooting modes include a silver halide shooting mode (Ph), a video shooting mode (Mv), a simultaneous shooting mode of video and silver halide (PM), and a still video shooting mode (PM). Sv) is an image photographing apparatus having a plurality of photographing modes having at least two photographing modes, and a camera shake correction when an interchangeable lens equipped with an optical camera shake correction function is mounted is as shown in Table 1. Since the method changes depending on the shooting mode, appropriate camera shake correction can be performed for each shooting mode.

That is, in the video shooting mode (Mv), it is possible to arbitrarily select between optical camera shake correction, optical camera shake correction without image quality deterioration, and electronic camera shake correction that saves energy. . Also, in the video shooting mode (Mv), when one of the camera shake correction mechanisms is operating and a camera shake larger than the limit of the camera shake correction function occurs, the other camera shake correction mechanism is operated and the camera shake correction is performed. We try to increase the limits of the function.

The present embodiment has an electric display element having a function as a finder, that is, an EVF section C27. In an electrophotographic system for outputting an image to the finder in the silver halide photographing mode (Ph), an electrophotographic method is used. In the silver halide photography mode (Ph) by adopting the optical camera shake correction at the time of silver halide photography,
At the time of preparation for photographing, the user can concentrate on the composition without worrying about shaking of the viewfinder image due to camera shake. Further, in actual photographing, correction cannot be performed by the electronic image stabilization mechanism. Therefore, the operation of the optical image stabilization mechanism corrects the blur of the image latent on the film.

In the simultaneous shooting mode (PM), silver halide,
By adopting the optical image stabilization mechanism in any video shooting, a video image can be shot without deterioration. Also, in the simultaneous shooting mode (PM), an electronic camera shake method is adopted in the electrophotography method, and an optical camera shake correction is adopted in the silver halide photographing, so that the electronic camera and the silver halide camera are used in the video shooting. At this time, when optical camera shake correction is performed, camera shake correction can be performed at the same time, and energy is saved.

In the simultaneous photographing mode (PM), by changing the AE program line by the camera shake correction mechanism to be adopted or by changing the camera shake correction mechanism to be adopted by the AE program to be selected, the image at the time of silver halide photography can be converted to a video. When performing after-view to check with images,
At least the same shutter speed is required for video and silver halide. However, by performing optical image stabilization, the range of shutter speeds that can allow camera shake in silver halide is widened, and the selection range of the AE program is widened.

In the still video shooting mode (Sv), an electronic camera shake method is used when outputting an image to the EVF unit C27, and an optical camera shake correction is used when capturing an image. The user can concentrate on the composition without worrying about the shaking of the image. In actual shooting, the camera is in the electronic mode and the energy saving mode in the shooting preparation state, and is in the optical mode in the shooting state.

By the way, if the camera shake correction on / off button is arranged on the lens side, there is a disadvantage that it is necessary to check on / off of the camera shake correction every time the lens is replaced. Therefore, in the present embodiment, since the on / off button COP15 of the camera shake correction function is disposed on the apparatus main body side, the camera shake correction state can be continued regardless of the electronic type or the optical type. The trouble is eliminated.

[0074]

As described above, according to the present invention, the image pickup device is provided with an apparatus main body, and the apparatus main body has a detachable and replaceable photographing lens, and has a function of correcting camera shake during photographing. In the image photographing apparatus provided, the image stabilization function is configured to be satisfied by an electronic image stabilization mechanism performed by changing an image cutout area of the image sensor.

That is, with respect to the camera shake correction function of a video camera having interchangeable lenses, in order to satisfy the camera shake correction in all the interchangeable lenses, it is necessary to provide an optical camera shake correction mechanism in all the interchangeable lenses. However, disadvantages such as high cost and a large lens are caused. On the other hand, in the present invention, by mounting an electronic image stabilization mechanism on the apparatus main body side, it becomes possible to perform image stabilization in all interchangeable lenses without making the lens large or expensive. It has a superior effect that cannot be seen.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of the optical system.

FIG. 3 is a plan view showing the appearance of the apparatus.

FIG. 4 is also a rear view.

FIG. 5 is a front view of the same.

FIG. 6 is a bottom view of the same.

FIG. 7 is an enlarged plan view showing an operation display unit.

FIG. 8 is a flowchart showing an operation procedure of camera shake correction in a simultaneous shooting mode.

FIG. 9 is a diagram showing a program curve in a simultaneous shooting mode.

[Explanation of symbols]

L Main lens L01 Focus operation ring L02 Focus operation ring state detector L03 Zoom operation ring L04 Zoom operation ring state detector L05 Focus detector L06 Lens microcomputer L07 Zoom motor L08 Zoom motor monitor L09 Focus motor L10 AF / MF switch button L11 Main lens aperture L12 Main lens aperture control unit L13 Fixed cylinder L14 Gyro for camera shake detection L15 Camera shake correction lens L16 Actuator C Camera body C01 Camera microcomputer C02 Focus detection unit C03 Camera shake detection unit C04 Pellicle mirror C05 AF auxiliary Mirror C06 Shutter drive section C07 Shutter C08 Film C09 Film feed control section C10 Condenser lens C11 Reflection mirror C12 Brightness detection Unit C13 ND filter C14 Relay lens C15 ND filter control unit C16 Optical low-pass filter C17 IR cut filter C18 Second stop, relay stop C19 Relay stop control unit C20 Hot shoe C21 CCD image sensor C22 Image processing unit C23 CCD drive pulse generation unit C24 Image processing unit C25 Recording / reproducing unit C26 Head unit C27 EVF unit C28 Recording medium C29 Battery C30 Communication / power supply contact C31 Audio processing unit C32 External output port C33 Speaker C34 Stereo microphone C35 Operation display unit C35A
Large liquid crystal display panel C35B Light-emitting lamp C36 Recording medium drive C40 Battery cover C41 Tripod hole COP Operation unit COP01
Release button COP02 Mode switching dial COP03
Open button COP04 Still image preview and fade button COP05 Red eye reduction button COP06
Program button COP07 Video screen changeover switch COP08 Silver halide shooting screen size changeover switch COP09 Operation mode changeover switch COP10
Film change button COP11 Scene select mode button COP12
Lens exchange button COP13 Zoom button COP14 Recording ON / OFF / Aperture release button COP15 Camera shake correction control ON / OFF and exposure correction button COP16 First liquid crystal unit pop-up button COP17 Flash forced light button COP18 Message display ON / OFF button COP19 Volume / video adjustment Button COP20 Second liquid crystal unit pop-up button COP21 Auto rewind button COP22 Self-timer button COP23
Menu button F Flash and light F01
Flash operation control unit

Claims (1)

[Claims] 1. An image photographing apparatus, comprising: an apparatus main body in which an image pickup device is provided; and a photographing lens which is detachably mounted on the apparatus main body, and which has a function of correcting a camera shake at the time of photographing. An image photographing apparatus characterized in that the image pickup apparatus is configured to be satisfied by an electronic image stabilization mechanism performed by changing an image cutout area of the image sensor.