JP2000330156A - Optical apparatus with image blurring correction function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the processing time for supporting state detection by constituting an optical apparatus in such a manner that supporting state detecting operation is not carried out when the apparatus is changed over into an automatic focusing mode with which a photographing condition not requiring the detection of the supporting state is predicted. SOLUTION: This optical apparatus has supporting state detecting means (#17 to #22) which detect the supporting state of the optical apparatus in accordance with the detection result of a deflection detecting means for detecting the deflection state acting on the optical apparatus, an automatic focusing means which is changed over to the first automatic focusing mode and the second automatic focusing mode different from the first automatic focusing mode and a supporting state detection control means (#16) which activates the supporting state detecting means when the automatic focusing means is changed over to the first automatic focusing mode and stops the activation of the supporting state detecting means when the automatic focusing means is changed over to the second automatic focusing mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an optical apparatus having an image blur correcting function such as a camera having a function of correcting an image blur caused by a camera shake or the like.

[0002]

2. Description of the Related Art In a current camera, all operations important for photographing, such as exposure determination and focusing, are automated, so that even a person unskilled in camera operation is very unlikely to fail in photographing.

[0003] Recently, a system for preventing camera shake added to a camera has been studied, and a factor which causes a photographer to make a photographing error has almost disappeared.

Here, an image blur correction device for preventing camera shake will be briefly described.

[0005] The camera shake at the time of photographing is generally a vibration of 1 to 12 Hz as a frequency. However, even if such a camera shake occurs at the time of release of the shutter, a basic method for taking a picture without image shake is possible. As a general idea,
The camera shake due to the camera shake must be detected, and the correction lens must be displaced according to the detected value.
Therefore, in order to achieve a photograph that does not cause image shake even when camera shake occurs, first, camera vibration is accurately detected, and second, optical axis displacement due to camera shake is corrected. It is necessary.

In principle, this vibration (camera shake) is detected by a shake sensor that detects angular acceleration, angular velocity, angular displacement, and the like, and an output signal of the shake sensor that is electrically or mechanically integrated to obtain the angle. This can be performed by mounting a shake detection device, which includes a camera shake detection circuit that outputs displacement, on a camera. Then, based on this detection information, the correction optical device for decentering the photographing optical axis is driven to perform image blur suppression.

Here, an outline of an anti-vibration system having a shake sensor will be described with reference to FIG. The example of FIG. 5 is a schematic diagram of an image shake correction apparatus that suppresses image shake caused by camera vertical shake 81p and camera horizontal shake 81y in the direction of the arrow 81 in the drawing, and the apparatus is provided in an interchangeable lens of a single-lens reflex camera. In the figure, 82 is a lens barrel, 83p and 83y are shake detecting devices for detecting camera vertical shake and camera horizontal shake, respectively. The respective vibration detection directions are indicated by 84p and 84y. It is. Reference numeral 85 denotes a correction optical device (86p and 86y are coils for applying thrust to the correction optical system 85, and 87p and 87y are position detecting elements for detecting the position of the correction optical device 85). A loop is formed and driven by using the outputs from the shake detection devices 83p and 83y as target values,
Stability on the image plane 88 is ensured.

FIG. 6 is an exploded perspective view showing an example of the structure of the correction optical device 85, which will be described.

The rear protruding ear 71a of the base plate 71 is fitted into a lens barrel (not shown), and a known lens barrel roller or the like is screwed into the hole 71b and fixed to the lens barrel. The second yoke 72, which is a magnetic material,
A hole 71c of the base plate 71 is screwed with a screw passing through the hole 72a.
A permanent magnet 73 (shift magnet) such as a neodymium magnet is magnetically attracted to the second yoke 72. The coils 76p and 76y (shift coils) are fitted in the support frame 75 to which the correction lens 74 is fixed by a C-ring or the like. The first yoke 712 is fitted by the positioning hole 712 a and the pin of the base plate 71, and the first yoke 712 is magnetically coupled to the base plate 71 by the magnetic force of the permanent magnet 73 on the receiving surface.

An L-shaped shaft 711 is mounted on a bearing 75 d of the support frame 75, and the other end of the shaft 711 is mounted on a bearing 71 d formed on the main plate 71. Also, this shaft 711 is supported by the support frame 75 with respect to the base plate 71 by arrows 713p, 7
This means that it is slidably supported only in the 13y direction,
Thus, the relative rotation (rolling) of the support frame 75 around the optical axis with respect to the base plate 71 is restricted.

The coils 76p and 76y are located in a closed magnetic path formed by the permanent magnet 73, the first yoke 712, and the second yoke 72. When a current flows through the coil 76p, the support frame 75 moves in the direction of arrow 713p. The support frame 75 is driven in the direction of the arrow 713y by being driven and causing a current to flow through the coil 76y.

When the support frame 75 moves in a plane perpendicular to the optical axis, the incident positions of the light emitted from the light projecting elements 77p and 77y and passing through the slits 75ap and 75ay on the position detecting elements 78p and 78y. Changes. Generally, the outputs of the position detecting elements 78p, 78y are output to ICs 731p, 7
When the coils 76p and 76y are driven by the outputs from the amplifiers 31y, the support frame 75 is driven and the position detecting elements 78 are driven.
The configuration is such that the output of p, 78y changes. Here, the driving direction (polarity) of the coils 76p and 76y is determined by the position detecting element 7.
If the outputs of 8p and 78y are set to decrease (negative feedback), the driving force of the coils 76p and 76y stabilizes the support frame 75 at the position where the outputs of the position detecting elements 78p and 78y become almost zero.

A method of performing driving by negatively feeding back the position detection output in this way is called a position control method. For example, a target value (for example, a shake angle signal) is externally supplied to the ICs 731p and 731y.
, The support frame 75 is driven very faithfully according to the target value.

Actually, the differential amplifiers 731cp and 731c
The output of y is sent to the main board (not shown) via the flexible board 716, where A / D conversion is performed, and is taken into the microcomputer (not shown).

In the microcomputer, the signal is appropriately compared with and amplified with a target value (camera shake angle signal), phase-compensated by a known digital filter method (to make position control more stable), and then passes through the flexible substrate 716 again. IC7
32 (for driving the coils 76p and 76y). IC
Reference numeral 732 performs a known PWM (pulse width modulation) drive of the coils 76 p and 76 y based on the input signal, and
Drive.

When the correction optical device is not operated, the support frame 75 needs to be fixed (locked).
Three projections (not shown) are provided on the back surface of the support frame 75, and the tips thereof are fitted to the inner peripheral surface of the lock ring 719 to fix the support frame 75. Specifically, when the coil 720 is energized by the magnetic circuit of the coil 720 and the lock magnet 718, the lock ring 719 rotates against the lock spring 728, the armature 724 abuts the attraction yoke 729, and the attraction coil 730 is energized. Thus, the armature 724 is sucked by the suction yoke 729. Here, when the energization of the coil 720 is stopped, the lock ring 719 tries to return to the original state by the force of the lock spring 728, but the rotation is restricted because the armature 724 is attracted to the attracting coil 729, and the lock is released. Become. To return to the locked state, the power supply to the attraction coil 730 is stopped, and the lock ring 719 is rotated by the force of the lock spring 728, so that the protrusion of the support frame 75 and the lock ring 7
19 and is locked.

FIG. 7 is a block diagram showing an electrical schematic configuration of the image blur correction device.

The output of the image blur detecting device 2 is supplied to a signal processing circuit 3 for performing amplification, a high-pass filter, a low-pass filter and the like.
, And is converted into a digital signal by an A / D converter 4 in the microcomputer 1, and offset removal, a high-pass filter,
Data processing such as integration is performed in the data processing unit 5.
The output of the position detection device 6 for detecting the position of the correction lens is processed by a signal processing circuit 7 for performing a low-pass filter or the like, and is converted into a digital signal by an A / D conversion unit 8 in the microcomputer 1, and is used for amplification and the like. Data processing is performed by the data processing unit 9
It is performed in. Then, these two signals are calculated by the feedback calculation unit 10, amplification and known phase lead compensation are performed by the phase lead compensation unit 11, and a drive signal of the correction lens is output to the port of the microcomputer 1, and the correction lens drive signal is output. The image blur correction is performed by driving the correction lens by the device 12.

When the image blur correction is not performed, the correction lens is locked (locked), and when the image blur correction is performed, the unlocked state is set. The lock / unlock drive unit 13 drives the correction lens. belongs to.

The image blur correction has optimal characteristics according to various situations, such as when the photographer takes a picture by hand, or when the photographer attaches to a tripod. For example, in the case of a single-lens reflex camera, when the photographer shoots hand-held, the characteristics may be set so as to correct even low frequency shake due to camera shake, but when shooting with the camera mounted on a tripod Since there is no low-frequency camera shake, it is better to set the image blur correction characteristic so as to correct only high-frequency vibration caused by the quick return mirror or shutter of the camera. Conversely, if a low frequency is applied, the drift of the shake sensor will deteriorate the imaging result. In view of this point, it has been proposed to detect a support state of a camera and set an image blur correction characteristic according to the support state.

[0021]

One of the methods for detecting the support state of the camera is to detect the signal level of the shake sensor, and the signal level of the shake sensor within a predetermined time is a predetermined value. If it is smaller, it is determined that the tripod is attached.

Here, when the determination is made based on the angular velocity signal level of the shake sensor, a system for removing the drift component of the shake sensor is provided in a system different from the high-pass filter and the integration in the data processing unit 5 of FIG. Each process of a high-pass filter and a low-pass filter for removing noise components must be performed. Furthermore, a process for detecting a tripod is performed by comparing the result of these calculations with the level of the tripod detection determination. Although these processes are performed in the microcomputer 1,
The calculation time increases due to the tripod detection.

Therefore, in a situation where the possibility of attachment to a tripod is considered to be small, it is better not to perform tripod detection in order to shorten the calculation time.

On the other hand, many proposals have been made for an automatic focus adjustment (AF) device. (1) One-shot AF: AF is performed once after focusing, and (2) Servo AF: AF is repeated many times. Perform (3) Moving object prediction servo AF: For a subject moving at high speed, the AF following delay occurring during the AF operation or the release operation is corrected. Some AF modes have also been proposed.

In a camera having a plurality of AF modes, a framing operation peculiar to the mode is performed, and the signal level of the shake sensor may be different. For example, in the one-shot AF mode, a stationary subject is often aimed, and there is a possibility that the camera is mounted on a tripod. In that case, the signal level of the shake sensor decreases. Since the servo AF follows a subject that moves around irregularly, it is highly likely that the subject is held by a hand or attached to a monopod. Even if it is attached to a tripod, the shake sensor signal level increases due to the framing change. Also in the moving object prediction servo AF, a subject moving in a certain direction is often pursued, and the situation is similar to that of the servo AF.

In the servo AF mode, the subject is often a moving object, in which case the subject shakes greatly, and the necessity of detecting a tripod and performing the optimum shake correction is reduced. In the servo AF mode, communication between the camera and the lens for focus adjustment and lens driving are always performed.
In order to perform high-speed focus adjustment, unnecessary processing should not be performed.

(Object of the Invention) It is an object of the present invention to prevent the support state detection operation from being performed when the automatic focus adjustment mode is switched to a mode in which a photographing situation that does not require detection of the support state is expected. Another object of the present invention is to provide an optical device with an image blur correction function that can reduce the processing time for detecting the support state.

[0028]

According to a first aspect of the present invention, there is provided a vibration detecting means for detecting a vibration state applied to an optical apparatus, and a vibration detecting means for detecting a vibration state applied to the optical apparatus. Supporting state detecting means for detecting a supporting state of the optical device; automatic focusing means for switching between a first automatic focusing mode and a second automatic focusing mode different from the first automatic focusing mode; In the optical apparatus with an image blur correction function having the above, when the automatic focus adjustment means is switched to the first automatic focus adjustment mode, the support state detection means is operated, and the second automatic focus adjustment mode is operated. When the mode is switched to the above, the optical device with the image blur correction function having the support state detection control means for stopping the operation of the support state detection means is provided.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 is a block diagram showing a schematic configuration of an optical apparatus according to a first embodiment of the present invention. In this embodiment, the optical apparatus is applied to an interchangeable lens of a single-lens reflex camera as an example of the optical apparatus. The case is assumed.

In FIG. 1, reference numeral 31 denotes a lens MPU which controls the lens by communicating with a camera. Reference numeral 32 denotes a shake sensor for detecting a shake (an example using an angular velocity sensor is shown in the following embodiment), and an output signal from the shake sensor is a DC signal by a high-pass filter.
The components are cut, and a low-pass filter (HPF / amplification / LPF circuit) 33 for amplification / noise removal is applied to the MPU 31.
Is input to the A / D conversion terminal. The output of the lens position detector 34 for detecting the position of the correction lens is subjected to processing such as a filter in a signal processing circuit 35, and the MPU 31
Is input to the A / D conversion input terminal. The two shake signals and the position detection signal are subjected to feedback calculation in the MPU 31, and the correction lens is driven via the coil driver 36, so that the image shake is corrected.

When the image blur correction is not performed, the correction lens is locked, and when the image blur correction is performed, the correction lens is unlocked (unlocked). The configuration is the same as the configuration shown in the conventional example. A lock / unlock operation is performed via 37.

The MPU 31 has a zoom / focus position detecting device 38 in addition to the image blur correction control described above.
Also, the drive of the focus lens and the drive of the aperture are performed via the motor drivers 39 and 40.

Reference numeral 41 denotes an operation selection switch (ISSW) for determining whether to perform image stabilization (Image Stabilizer), and reference numeral 42 denotes a switch (A / MSW) for selecting between auto focus and manual focus.

The lens MPU 31 includes a camera MPU 4
The camera 3 communicates with the camera lens 3 to check the status (focal length, switch state, etc.) of each camera and lens, and to transmit drive commands such as focus and aperture.

Reference numeral 44 denotes a release button, which is generally a two-stage stroke switch, and the switch SW1 is turned on by the first stroke (half press) of the release button 44,
The release switch SW2 is turned on in the second stroke (fully pressed). Reference numeral 45 denotes an AF mode selection switch for switching the AF mode between the one-shot AF mode and the servo AF mode.

Next, the specific operation of the lens MPU 31 will be described with reference to the flowchart of FIG. In the first embodiment, it is assumed that the tripod detection is started by turning on the switch SW1.

When the lens is mounted on the camera, the camera MP
Serial communication is performed from U43 to the lens MPU31,
The lens MPU 31 starts operation from step # 1.

First, in step # 1, initialization for lens control and image blur correction control is performed, and in the next step # 2, the state detection of the ISSW 41 and A / MSW 42 and the zoom / focus position detection device 38 Detects the zoom and focus state of the lens. And
In the next step # 3, it is determined whether or not there is a focus drive request communication from the camera MPU43. If there is a focus drive request, the process proceeds to step # 4, where the camera MPU 43 instructs the drive amount of the focus lens, and accordingly drives the motor driver 39 to perform focus drive control.

If there is no focus drive request at step # 3, the process proceeds to step # 5, where the communication from the camera MPU 43 and the state of the ISSW 41
The motor driver 37 is driven to perform lock / unlock control, and an image blur correction start flag IS_STAR
T is set. Then, in the next step # 6,
It is determined whether or not a command to stop all driving (stop all driving of the actuator in the lens) has been received from the camera MPU 43. If no operation is performed on the camera side, the full drive stop command is transmitted from the camera MPU 43 after a while. Then, the process proceeds to step # 7, in which all drive stop control is performed. Here, driving of all the actuators is stopped, and the lens MPU 31 is put into a sleep (stop) state. And
Power supply to the image blur correction device is also stopped. Thereafter, when an operation is performed on the camera side, the camera MPU 43
The communication is sent to the PU 31 to release the sleep state.

During these operations, if there is a serial communication interrupt or an image blur correction control interrupt request from the camera, the interrupt processing is performed.

In the serial communication interrupt processing, communication data is decoded, and lens processing such as, for example, aperture driving is performed according to the decoding result. Then, by decoding the communication data, ON of the switch SW1, ON of the release switch SW2, shutter time, camera model, and the like can be determined. As a result, the switch SW1 of the camera
Start tripod detection with N and turn on release switch SW2
Can interrupt tripod detection. Further, the state of the AF mode selection switch 45, that is, the AF mode selected by the camera can also be detected by the serial communication interrupt of the camera. Therefore, the state of the AF mode of the camera is detected by the serial communication, and the tripod detection is performed or not performed according to the detected state. This detailed operation will be described later.

The image blur correction interrupt is a timer interrupt that occurs at regular intervals (for example, 500 μsec). Since the control in the pitch direction (vertical direction) and the control in the yaw direction (horizontal direction) are performed alternately, the sampling cycle in one direction in this case is 1 msec. Also, since the control method is similar in both directions in many directions, only one program is created. Even if the control method (operation coefficient, etc.) is the same, the result of the operation and the like is naturally different data in the pitch direction and the yaw direction. The calculation is performed by switching the reference address between pitch control and yaw control.

When an image blur correction interrupt occurs during the main operation of the camera, the lens MPU 31 starts control of image blur correction from step # 11 in the flowchart shown in FIG. The tripod detection operation is also performed in the image blur correction interrupt.

First, in step # 11, the output of the angular velocity sensor as the shake sensor 32 is A / D converted. In the next step # 12, the image blur correction start flag I
The state of S_START is determined, and if the image blur correction start flag is cleared, the process proceeds to step # 13,
Since the image blur correction is not performed, the high pass and the integration operation are initialized, and the process proceeds to step # 25 in FIG.

On the other hand, if the image blur correction start flag has been set, the process proceeds to step # 14, where a high-pass filter operation is performed to perform the image blur correction. In addition, the time constant is switched for a few seconds from the start of the image blur correction, and the image fluctuation at the start is reduced. In addition, the time constant is changed depending on whether the camera is supported on a tripod or handheld.

In the next step # 15, it is determined whether or not the switch SW1 is turned on. If the switch SW1 is turned on, the process proceeds to step # 16 to start tripod detection, and the AF mode is set to one shot. It is determined whether or not the current mode is the AF mode. If the mode is the one-shot AF mode, the process proceeds to step # 17 to perform a tripod detection operation.
If the mode is the servo AF mode, the process proceeds to step # 24, and the tripod detection is interrupted.

At step # 17, a high-pass filter operation is performed. Here, a high-pass filter operation having a higher cutoff frequency than the high-pass filter operation in step # 14 is performed. This is to remove the drift of the shake sensor 32 as much as possible. And the next step #
At 18, a low-pass filter operation is performed. this is,
This is for removing noise components. Next step # 19
In, it is compared whether the calculation result in the above step # 17 does not exceed the maximum value / minimum value until the previous sampling, and if it does, the maximum value or the minimum value is updated.
Then, in the next step # 20, it is determined whether or not the difference between the maximum value and the minimum value is smaller than a predetermined value D. If the difference is smaller than the predetermined value, the process proceeds to step # 21, and the difference between the maximum value and the minimum value is determined to be a predetermined value. Since it is smaller than D, it is determined that the camera is supported on a tripod (S_KYAKU flag = 1). If the difference between the maximum value and the minimum value is larger than the predetermined value D, the process proceeds from step # 20 to step 22. Since the difference between the maximum value and the minimum value is larger than the predetermined value D, it is determined that the hand is held (S_KYAKU).
Flag = 0).

In step # 15, the switch S
If W1 is not ON, the process proceeds to step # 23, where the high-pass / low-pass / maximum / minimum value for tripod detection is initialized, and the process proceeds to step # 22 described above.

In step # 24, the integral operation of the set characteristics (including the case where the image blur correction characteristics are changed depending on whether the camera is supported on a tripod or held by hand) is performed. This result becomes angular displacement data θ. When panning is performed, the cutoff frequency of integration is switched in accordance with the deflection angle displacement. In the next step # 25 in FIG. 4, since the amount of eccentricity (sensitivity) of the correction lens with respect to the shake angle displacement changes depending on the zoom / focus position, the adjustment is performed.
More specifically, the zoom and focus positions are divided into several zones, and the average image stabilization sensitivity (deg / mm) in each zone is read from the table data and converted into correction lens drive data. The calculation result is stored in a RAM area set by SFTDRV in the lens MPU 31.

In the next step # 26, the output of the lens position detector 34 for detecting the position of the correction lens is
/ D conversion, and the A / D result is converted into an SFT in the lens MPU 31.
It is stored in the RAM area set by PST. Then, in step # 27, the feedback calculation (SFTD
RV-SFTPST), and in the next step # 28, the loop gain is multiplied by the calculation result of the above-mentioned step # 26, and in the following step # 29, a phase compensation calculation is performed to make a stable control system. Finally, step # 30
, The result of step # 29 is output to the port of the lens MPU 31 as PWM, and the interruption is terminated.

The output of the port of the lens MPU 31 is input to the coil driver 36, and the correction lens is driven by the moving magnet to correct the image blur.

According to the above embodiment, the AF of the camera
The determination result of the mode selection switch 45 (step # in FIG. 3)
16) In the one-shot AF mode, the tripod detection operation is performed, and in the servo AF mode, the tripod detection calculation operation is prohibited. Therefore, there is little possibility that the tripod is used, or the influence of subject shake is large. Since unnecessary tripod detection calculation operation in the situation is not performed, the calculation time can be reduced. Then, since the time for driving the AF and the like and the camera lens communication can be spent in the shortened time, a high-speed AF operation can be performed.

(Correspondence between the Invention and the Embodiment) In the above embodiment, the shake sensor 32 corresponds to the shake detection means of the present invention, and the lens MPU 31 performs steps # 17 to # 17 in FIG.
The part that performs the operation of 22 corresponds to the support state detection means of the present invention, and the part of the lens MPU 31 that performs the operation of step # 16 in FIG. 3 corresponds to the support state detection control means of the present invention. The one-shot AF mode corresponds to the first automatic focus adjustment mode of the present invention, and the servo AF mode corresponds to the second automatic focus adjustment mode.

(Modification) In each of the above-described embodiments, an example in which digital control is performed is described. However, analog control may be performed.

Also, the example in which the image blur correction device is incorporated in an interchangeable lens has been described, but the image blur correction device is not provided in the interchangeable lens, but is mounted in front of the interchangeable lens.
It may take the form of an accessory that fits inside any of the lenses.

Further, the present invention may be applied to a camera such as a lens shutter camera and a video camera, and further, may be applied to other optical devices, other devices, and constituent units.

In the above embodiment, the angular velocity sensor is used as an example of the shake sensor.
Any sensor can be used as long as the shake can be detected, such as an acceleration sensor, a speed sensor, an angular displacement sensor, a displacement sensor, and a method of detecting the image shake itself.

As a method of detecting the support state, a method of calculating the difference between the maximum value and the minimum value of the shake angular velocity has been described. However, the shake acceleration and the displacement may be used, and not the difference between the maximum value and the minimum value but the magnitude of the maximum value. Or any method as long as the support state can be detected.

[0060]

As described above, according to the present invention,
When the camera is switched to the auto focus mode in which a shooting situation that does not require detection of the support state is expected, the support state detection operation is not performed, and the processing time for the support state detection can be reduced. It is possible to provide an optical device with an image blur correction function that can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an interchangeable lens for a single-lens reflex camera according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a main operation in the lens MPU of FIG. 1;

FIG. 3 is a flowchart illustrating a part of an image blur correction control operation according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a continuation of the operation in FIG. 3;

FIG. 5 is a perspective view for explaining a configuration of a conventional image blur correction device.

FIG. 6 is an exploded perspective view showing an example of a configuration of a conventional image blur correction device.

FIG. 7 is a block diagram illustrating an example of an electrical configuration of a conventional image blur correction device.

[Explanation of symbols]

 31 Lens MPU 32 Shake Sensor 34 Lens Position Detector 36 Shake Correction Driver 37 Locking Motor Driver 41 Image Shake Correction Selection Switch (ISSW) 45 AF Mode Selection Switch

Claims (4)

[Claims] 1. A shake detection means for detecting a shake state applied to an optical device, a support state detection means for detecting a support state of the optical device based on a detection result of the shake detection means,
An optical apparatus with an image blur correction function comprising: a first automatic focus adjustment mode; and an automatic focus adjustment means that is switched to a second automatic focus adjustment mode different from the first automatic focus adjustment mode. When the unit is switched to the first automatic focus adjustment mode, the support state detection unit is operated. When the unit is switched to the second automatic focus adjustment mode, the operation of the support state detection unit is performed. An optical apparatus with an image blur correction function, comprising: a support state detection control means for stopping the operation. 2. The optical apparatus with an image blur correction function according to claim 1, wherein the first automatic focus adjustment mode is a mode in which, after focusing once, automatic focus adjustment is not performed thereafter. 3. The optical apparatus according to claim 1, wherein the second automatic focus adjustment mode is a mode in which automatic focus adjustment is always performed. 4. The optical apparatus with an image blur correction function according to claim 1, wherein said support state detecting means is means for detecting whether or not said optical apparatus is fixed to a tripod.