JP2004012896A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable correct detection of shake generated in a camera and to enable correct announcement of a detected result even when an inexpensive, unidirectionally arranged range-finding sensor is used. <P>SOLUTION: The movement for the longitudinal direction of the base line of the camera is detected by the image signal of a subject detected by an AF (Autofocus) sensor 5c, by which the shake in the transverse direction of the camera is detected. The shake in the longitudinal direction of the camera is detected by detecting the change of the image signal of the subject with lapse of time. The announcement display different in the case the shake is strong in the transverse direction and the case the shake is strong in the longitudinal direction is made by an LCD 6a within a finder. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a camera having an improved display mode of a shooting mode set according to a user's preference, such as a camera shake prevention mode for detecting camera shake occurring during shooting and giving a vibration warning to a photographer.
[0002]
[Prior art]
Normally, when a photographer holds a camera with his / her hand and takes a picture, the camera shakes during exposure, resulting in a failed photograph, that is, so-called camera shake may occur. In order to prevent this camera shake, various anti-shake techniques have been studied. This anti-vibration technology can be divided into two technologies, that is, detection of vibration and measures against the detected vibration.
[0003]
In addition, techniques for preventing camera shake are classified into a warning technique for allowing a user to recognize a shaking state and a technique for controlling the driving of a photographing lens to prevent image deterioration due to camera shake. Among them, as a warning technique, the present applicant has proposed, for example, in Japanese Patent Application No. 11-201845, a camera that suppresses failure due to camera shake by devising display means.
Usually, these warnings are made to be recognized by the photographer by turning on or blinking a display unit provided in the camera.
[0004]
Further, in the technique of detecting vibration, an example in which a distance measuring sensor is applied is disclosed in Japanese Patent Application Laid-Open No. 2001-165622, and previously, Japanese Patent Publication No. 62-27686. For example, the technology disclosed in Japanese Patent Application Laid-Open No. 2001-165622 performs a correlation operation using data near a point where the output change is large, based on the outputs of two ranging sensors having different sampling timings, and performs correlation calculation. The image shift, that is, the vibration is detected from the data shift amount at which the amount becomes the largest.
[0005]
[Problems to be solved by the invention]
However, when the distance measurement sensors are arranged only in one direction in the horizontal direction with respect to the camera, and when the fluctuation component in the horizontal direction is strong, the vibration can be detected from the data shift amount, but the vertical When the fluctuation component is strong, the data shift amount is detected to be small. In other words, when the vertical swing component is strong, it is determined that no camera shake has occurred even if camera shake has occurred, and there is a possibility that an appropriate shake warning cannot be issued.
[0006]
The present invention has been made in view of the above circumstances, and even when an inexpensive one-way distance measuring sensor is used, a camera that can correctly detect shaking occurring in the camera and correctly notify the detected result. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a camera according to the present invention is configured by arranging a plurality of pixels in a base line length direction of a camera, and a sensor array for detecting an image signal of a subject, and a sensor array for detecting an image signal of the subject. Detecting means for detecting a change, and vibration detecting means for performing vibration detection in accordance with a change in the image signal detected by the detecting means, wherein the detecting means detects the change in the image signal detected by the sensor array. A first detection unit that detects movement in a base line length direction, a second detection unit that detects a time change of an image signal output from a predetermined pixel among the plurality of pixels, and the first detection unit or the second detection A notification unit that notifies vibration detection information to the vibration detection unit based on a detection result of the unit, wherein the notification unit detects vibration based on a detection result from the first detection unit. A case where the announcement of the broadcast, and performs notification of the different notification form in the case of making a notification of the vibration detection information based on the detection result from the second detection unit.
[0008]
That is, the camera of the present invention uses a sensor array arranged in the base line length direction to detect a change in the position of the image signal in the base line length direction by the first detection unit in the detection means, and also detects the time change of the image signal. Is detected by the second detection unit. Further, the detection result by the first detection unit or the second detection unit is notified by the notification unit. That is, using a sensor array arranged in the base line length direction, the shaking in the direction orthogonal to the base line length direction is detected, and the shaking is notified based on the detection result.
[0009]
Further, in order to achieve the above object, the camera according to the present invention, when the notification unit notifies the vibration detection information based on the detection result from the first detection unit, the notification unit, It is characterized by performing stepwise notification.
[0010]
That is, in the camera according to the present invention, when detection is performed by the first detection unit having high reliability at the time of vibration detection, notification is performed stepwise by the notification unit.
[0011]
Furthermore, in order to achieve the above object, the camera according to the present invention, when the notification unit notifies the vibration detection information based on the detection result from the second detection unit, the notification unit, It is characterized by performing binary notification.
[0012]
That is, in the camera according to the present invention, when detection is performed by the second detection unit having low reliability at the time of vibration detection, a binary notification is performed by the notification unit.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a block circuit diagram of a camera according to an embodiment of the present invention.
[0015]
In this configuration, a CPU 1 for controlling the entire camera, an IFIC 2, a memory (EEPROM) 4 for storing adjustment data, an autofocus (AF) unit 5a, a photometric unit 5b, an AF sensor 5c, and a camera A liquid crystal display element (LCD) 6 for displaying information relating to a setting state and photographing, an LCD 6a provided in the finder for displaying information relating to photographing, and a strobe circuit 8 including an arc tube for emitting auxiliary light and the like. A main condenser 8a for charging electric charge for causing the arc tube to emit light, a photographing lens 9 having a zooming function, a warning display unit 11 including an LED, and a resistor 11a connected in series to the warning display unit 11. Switches 13a and 13b for starting a camera shooting sequence and a mode switch for setting a blur detection mode. A changeover switch 13c, a flash switch 13d for changing the light emission state of a strobe of a camera, a motor 18 for driving a driving mechanism such as a photographing lens, a shutter, and film feeding, and a rotation that rotates in conjunction with the motor 18. It is configured to include the blade 16 and a photo interrupter 17 that optically detects a hole of the rotary blade 16 that rotates for drive control of the motor 18.
[0016]
When driving each driving mechanism such as the shutter 19 and the zoom lens barrel, the motor 18 may switch the driving destination by a switching mechanism, or each driving mechanism may include a separate motor.
[0017]
In this configuration, the CPU 1 controls a camera shooting sequence according to the operation states of the switches 13a and 13b. That is, in addition to the notification display by the LCD 6a in the finder for camera shake notification in accordance with the output of the AF sensor 5c, the AF unit 5a at the time of shooting and the photometry unit 5b for measuring the brightness value of the subject for exposure control are driven, and necessary signals are output. The motor 18 is controlled via the IFIC 2 described above. At this time, the rotation of the motor 18 is transmitted to the rotary blade 16, and the signal output from the photointerrupter 17 is subjected to waveform matching by the IFIC 2 in accordance with the position of the adjustment hole, and the CPU 1 monitors the rotation state of the motor 18. Further, the strobe circuit 8 is controlled as necessary to emit auxiliary light.
[0018]
FIG. 2 is an explanatory diagram of the principle of distance measurement by the AF sensor 5c. The AF sensor 5c includes a pair of light receiving lenses 5d and a pair of sensor arrays 5e.
[0019]
The pair of light receiving lenses 5d are arranged apart from each other by a distance (base line length) B between principal points, and form an image of the subject 101 on the pair of sensor arrays 5e. The sensor array 5e is composed of a plurality of pixels arranged in a base line length direction of a pair of light receiving lenses 5d, and an electric signal corresponding to the brightness of an image of the subject 101 formed on the sensor array 5e by the light receiving lenses 5d. To form an image signal. The image signal at this time becomes, for example, the image signal 102, and is generated at different positions on the pair of sensor arrays 5e due to the parallax of the light receiving lens 5d. That is, by detecting the relative position difference x between the two image signals 102, the principle formula of triangulation L = Bf / x
Thus, the subject distance L can be obtained. Here, f is the focal length of the light receiving lens 5d.
[0020]
The image signal output from the AF sensor 5c is used not only for calculating the subject distance but also for determining the camera shake state. The determination of the swing state will be described later.
[0021]
FIG. 3 shows an example of a swing notification pattern displayed on the LCD 6a in the finder as a first display example of the swing notification. As the LCD 6a in the viewfinder, a screen display in the panorama mode or a blackout display indicating that the shutter has been released is used.
[0022]
First, FIG. 3A will be described. FIG. 3A shows an example in which the swing notification is performed stepwise according to the magnitude of the shake. Here, assuming that the magnitude of the shake is notified in four stages, if the shake is the smallest, nothing is displayed on the LCD 6a in the finder as indicated by a-0. Next, when the fluctuation increases by one step, only the lower LCD in the viewfinder is darkened as shown in a-1. When the fluctuation is further increased by one step, the LCD in the lower part of the viewfinder and in the center of the viewfinder are darkened as shown in a-2. When the fluctuation is further increased by one step, all LCDs in the viewfinder are darkened as shown in a-3. In other words, by displaying a-0 to a-3 in accordance with the magnitude of the vibration occurring at that time, the vibration is notified stepwise according to the magnitude of the vibration.
[0023]
Next, FIG. 3B will be described. FIG. 3B is an example in which the swing notification is performed in a binary manner. In this case, the shaking is notified in two ways, "having" and "no". If there is no shaking (the size of the shaking is equal to or less than the predetermined value), nothing is displayed on the LCD 6a in the finder as indicated by b-0. On the other hand, when there is a swing (the magnitude of the swing is larger than the predetermined value), the upper and lower portions of the LCD 6a in the finder are darkened as indicated by b-1. By the two types of display, b-0 and b-1, a binary swing notification is performed according to the presence or absence of the swing.
[0024]
FIGS. 4A and 5 show the appearance of a configuration example of a camera having such a shake detection mode. Here, FIG. 4A shows a configuration viewed from the back side of the camera, and FIG. 5 shows a configuration viewed from the front oblique direction. With reference to these figures, the operation of notifying the occurrence of camera shake due to the holding check will be described. In addition, here, a second display example of the swing notification in which the notification is performed without using the above-described LCD 6a in the finder will be described.
[0025]
As shown in FIG. 4A, a finder eyepiece 61 is provided on the back of the camera 10, and a light emitting diode (LED) 11 is provided beside the finder eyepiece 61. In a state where camera shake has occurred, the user can recognize the notification even when the camera is held by blinking the two LEDs 11 simultaneously or alternately.
[0026]
When the swing notification is performed in a plurality of stages as described above using these two LEDs 11, for example, the blinking cycle of the LEDs is changed. FIG. 4B shows the relationship between the magnitude of the shaking and the blinking cycle of the LED. When the swing is the smallest, it is a-0, and the blinking cycle of the LED 11 is made the longest. For example, a cycle of about 0.5 seconds can be considered. Next, the blinking cycle is shortened as the swing gradually increases. When the magnitude of the swing becomes larger than a predetermined value, the cycle becomes a-3, and the blinking cycle of the LED 11 is minimized. For example, a cycle of about 0.1 second is conceivable. In other words, by changing the blinking period of the LED 11 according to the magnitude of the shaking, the shaking is notified stepwise.
[0027]
FIG. 4C shows an example in which the above-described binary swing notification is performed. When there is no shaking, both LEDs 11 are not turned on as shown by b-0. On the other hand, when there is shaking, both LEDs 11 are turned on as indicated by b-1. Binary swing notification is performed by these two types of LED display.
[0028]
When recognizing the notification made in the LCD 6a in the finder or the notification made by the LED 11 as described above, the photographer attaches the left hand to the camera holding with one hand (for example, right hand) and holds the camera. Measures to prevent shaking, such as holding firmly, can be made.
[0029]
As shown in FIG. 4A, a mode display LCD 6, a mode setting switch 13c, a release button 51, and the like are provided on the upper surface of the camera 10.
[0030]
Further, as shown in FIG. 5, a photographing lens 63 is provided on the front surface of the camera 10, and a finder objective unit 64, a light receiving lens 5 of the AF unit 5a and the photometry unit 5b, a strobe light emitting unit 62, and a self-timer are provided above the taking lens 63. LED 65 is arranged. At the time of camera shake, if the LED 65 is blinkingly displayed together with the LED 11, the user requests another person to take an image of himself / herself, and recognizes that camera shake has occurred to the photographer even when he is in front of the camera. The camera shake can be notified to the photographer. At this time, when the swing is notified stepwise using the LED 65, the blinking cycle of the LED 65 is changed stepwise according to the magnitude of the shake as described above. In the case of performing a binary swing notification, the LED 65 is turned off when the magnitude of the swing is equal to or smaller than a predetermined value, and the LED 65 is turned on when the magnitude of the shake is larger than the predetermined value.
[0031]
Further, as shown in FIG. 5, a barrier 10a is provided on the front surface of the camera 10 so as to be slidable and cover the photographing lens 63, the finder objective section 64 and the like when the camera is carried. The barrier 10a also functions as a power switch of the camera. When the barrier 10a is opened, the power is turned on, and the retracted photographing lens 63 is extended to a predetermined position to enable photographing. When the user wants to close the camera 10a, the photographing lens 63 may be retracted in the camera 10 and the power may be turned off.
[0032]
The LED 11 provided in the vicinity of the finder eyepiece 61 on the back side of the camera 10 described above may also be used as an existing LED for strobe charging display and AF focusing display.
[0033]
Furthermore, if the holding is unstable and the camera shakes after setting the camera after setting the camera shake detection mode, the LCD 6a in the finder blinks as described above, or as shown in FIG. The LED 11 near the finder eyepiece 61 of the camera may blink to notify the shaking.
[0034]
Next, a method of determining a camera shake based on the image output of the AF sensor 5c of the camera having the above configuration will be described.
[0035]
As shown in FIG. 5, when the light receiving lenses 5 are arranged in the lateral direction of the camera 10, that is, when the base line length direction is set in the lateral direction of the camera, as shown in FIG. For example, when the position is shifted in the direction of arrow a, the monitor range 200 of the AF sensor 5c changes to the monitor range 201. At this time, the image signal of the person 101 is subject, in the timing of t ₂ after the shift before t ₁ of the timing and a camera in which the camera is deviated, horizontal direction as shown in FIG. 6 (A), i.e., It changes in the direction in which the AF sensors 5c are arranged. Therefore, by detecting the deviation amount ΔX of the image signal at this time, it is possible to determine the magnitude of the fluctuation substantially quantitatively.
[0036]
On the other hand, when the camera 10 is displaced in the vertical direction, for example, in the direction of the arrow b as shown in FIG. 8B, the monitor range 200 of the AF sensor 5c changes to the monitor range 202. At this time, the monitor position itself changes, for example, the monitor range 200 monitors the vicinity of the eyes of the person 101 and monitors the vicinity of the mouth of the person 101 as shown in the monitor range 202. at the timing of t ₂ after the shift before t ₁ of the timing and a camera in which the camera is shifted occurs significant changes in the image signal, such as the shape itself of the image signal as shown in FIG. 7 (a) is changed .
[0037]
Therefore, as shown in FIG. 7B, by taking the difference between the image signals for each pixel before and after the image signal changes, it can be determined whether or not the image signal has changed. That is, by using the maximum change value ΔI _MAX of the image signal as a representative output thereof and comparing this ΔI _MAX with a predetermined value ΔI ₀ , it is determined whether or not the camera is displaced. "/" None "can be determined. However, in this case, only the presence or absence of the shaking is known, and the magnitude of the shaking is not known.
[0038]
Further, this ΔI _MAX cannot be used for judging the shake when the shake component in the lateral direction of the camera is strong. In other words, if ΔI _MAX is used when the horizontal fluctuation component is strong, even if the actual vertical fluctuation is small, the output image signal of the same pixel is extremely low as shown in FIG. , And as a result, ΔI _MAX becomes large. That is, in the method of determining ΔI _MAX , if the camera has a strong horizontal swing component, it is determined that there is a vertical swing even if the actual vertical swing is small.
[0039]
Therefore, in the present embodiment, when a lateral shift amount that cannot be ignored is detected, the swing determination based on ΔI _MAX is not performed, and the magnitude relationship between the image signal change and the shake amount is corrected. Is used to determine the swing state. This makes it possible to make a highly reliable swing determination.
[0040]
FIG. 9 shows the relationship between the shift amount of the image signal and the swing amount. 9A shows a shift amount of a horizontal image signal with respect to a horizontal swing amount, and FIG. 9B shows a shift amount of a vertical image signal with respect to a vertical shake amount. In other words, when the lateral vibration occurs, the deviation amount ΔX of the image signal at that time is substantially proportional to the lateral vibration amount. On the other hand, when a vertical swing occurs, ΔI _MAX is saturated in a section where the swing amount is equal to or greater than the predetermined value ΔM.
[0041]
FIG. 10 and FIG. 11 show a procedure in which the CPU built in the camera performs determination control in order to perform such a camera shake determination. In this example, an example in which the notification is performed by the LCD 6a in the finder will be described. However, even when the notification is performed using the LED 11, the other control is the same except that the notification method is different as described above.
First, the CPU 1 determines whether or not the barrier 10a of the camera has been opened (step S1). If it is determined that the barrier 10a has not been opened, the process waits until the barrier 10a is opened.
[0042]
On the other hand, when it is determined that the barrier 10a has been opened, the image of the subject 101 received through the light receiving lens 5 is detected (step S2). Then, the difference between the image signals output by the adjacent pixels, i.e., performs adjacent difference maximum region determination determining the largest area contrast, to detect an image signal I ₁ in that region (step S3). The timing for detecting the image signal I ₁ is a timing t ₁ of the foregoing. Further, if the image signal is detected from the region having the largest contrast in this manner, it is easy to perform the subsequent determination.
[0043]
Next, after waiting for a predetermined time (step S4) to generate the timing t2 of the _second image signal detection, the image of the subject 101 is detected again (step S5). Next, by performing the adjacent difference maximum region determination determining the largest area is the contrast between adjacent pixels, for detecting an image signal I ₂ in the region (step S6).
[0044]
After detection of the image signal I ₁ and the image signal I _2, compares the detected image signal. First, an image shift amount ΔX is detected in order to determine the lateral shake of the camera (step S7). Next, it is determined whether or not the detected ΔX is larger than a predetermined value X0 (Step S8).
[0045]
When it is determined that ΔX is larger than the predetermined value X0, a notice is given of the camera shake in the lateral direction. In this case, the stepwise notification is performed as described above. For this purpose, first, it is determined whether or not the detected ΔX is larger than a predetermined value X1 (step S9). If it is determined that ΔX is equal to or smaller than the predetermined value X1, the above-described notification of a-1, that is, a display for darkening only the lower part of the LCD 6a in the finder is performed (step S10), and the process proceeds to step S18.
[0046]
On the other hand, if it is determined in step S9 that ΔX is larger than the predetermined value X1, it is determined whether ΔX is larger than the predetermined value X2 (step S11). If it is determined that ΔX is equal to or smaller than the predetermined value X2, the above-mentioned notification of a-2, that is, the display for darkening the lower portion and the center portion of the LCD 6a in the finder is performed (step S12), and then the process proceeds to step S18. .
[0047]
On the other hand, if it is determined in step S11 that ΔX is larger than the predetermined value X2, the above-described notification of a-3, that is, the display for darkening all parts of the LCD 6a in the finder is performed ( Step S13) and proceed to step S18.
[0048]
On the other hand, if it is determined in step S8 that ΔX is equal to or smaller than the predetermined value X0, the camera is notified of the vertical swing. In this case, since only the presence or absence of the vertical swing is known, the notification in the vertical direction is performed by the above-described binary notification. Therefore, first detects the maximum [Delta] I _MAX of the absolute value of the difference between the pixel output of the image signal _{I 1} and the image signal _{I 2} (step S14). Next, it is determined whether the detected ΔI _MAX is larger than a predetermined value ΔI ₀ (step S15). When it is determined that ΔI _MAX is larger than the predetermined value ΔI _0, it is determined that the shaking is “present”, and the notification of b-1 described above, that is, the display for darkening the upper and lower parts of the LCD 6a in the finder is performed. Thereafter (step S16), the process proceeds to step S18.
[0049]
On the other hand, if it is determined in step S15 that ΔI _MAX is equal to or smaller than the predetermined value ΔI _0, it is determined that there is no shaking, and no display is performed on the LCD 6a in the finder (step S17). Proceed to S18. This step S17 corresponds to the above-mentioned announcement a-0 or announcement b-0.
[0050]
After making any notification, it is determined whether or not the release button 51 has been operated (step S18). If it is determined that the release button 51 has not been operated, the process returns to step S1, and the operation control of the swing notification is repeated until the release button 51 is operated.
[0051]
On the other hand, if it is determined in step S18 that the release button 51 has been operated, the display of the shake notification ends (step S19), and then the shooting sequence starts. First, distance measurement for calculating a subject distance is performed (step S20). Next, it is determined whether or not the distance measurement result has been correctly obtained (step S21). If it is determined that the distance measurement result could not be obtained correctly due to camera shake or the like, the notification is performed again as described above (step S22). By recognizing this notice, the photographer can take measures against shaking such as re-holding the camera. After such notification, the exposure sequence is started. It should be noted that a known control can be applied as it is to the exposure sequence, and a description thereof will be omitted.
[0052]
On the other hand, if it is determined in step S21 that the distance measurement result has been correctly obtained, the photographing lens 63 is focused (step S23), and the subsequent exposure sequence is started.
[0053]
As described above, according to the present embodiment, it is possible to accurately detect a position change in a direction orthogonal to the direction by using an AF sensor that can detect a position change in only one direction of the camera. This makes it possible to perform highly reliable swing determination.
[0054]
Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the present invention. is there.
[0055]
【The invention's effect】
As described in detail above, according to the present invention, even when an inexpensive distance measuring sensor arranged in one direction is used, a camera that can correctly detect shaking occurring in the camera and can correctly notify the detected result is provided. can do.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram of a camera according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a principle of distance measurement by an AF sensor.
FIG. 3 is an explanatory diagram of a display example when a shake notification is performed on an LCD in a finder.
FIG. 4A is a rear perspective view of a camera according to an embodiment of the present invention, and FIGS. 4B and 4C are examples of display when a shake notification is given to an LED. FIG.
FIG. 5 is a front perspective view of the camera according to the embodiment of the present invention.
FIG. 6 is a distribution diagram illustrating image signals when a camera shakes in the horizontal direction.
FIG. 7 is a distribution diagram illustrating image signals when a camera shakes in the vertical direction.
FIG. 8 is an explanatory diagram regarding a monitoring range of an AF sensor when the camera shakes.
FIG. 9 is a graph showing an image shift amount with respect to a shake amount.
FIG. 10 is a first half of a flowchart for explaining a main operation of the camera according to the embodiment of the present invention;
FIG. 11 is a latter half of a flowchart for describing a main operation of the camera according to the embodiment of the present invention.
[Explanation of symbols]
1 CPU
2 IFIC
4 Memory 5, 5d Light receiving lens 5a Autofocus (AF) unit 5b Photometry unit 5c AF sensor 6 Liquid crystal display (LCD)
6a LCD in viewfinder
8 Strobe circuit 8a Main condenser 9, 63 Photographing lens 10a Barrier 11 Light emitting diode (LED) for warning display
11a Resistance 13a, 13b, 13c Switch 13d Flash switch 16 Rotating blade 17 Photo interrupter 18 Motor 19 Shutter 51 Release button 61 Viewfinder eyepiece 62 Strobe light emitter 64 Viewfinder objective 65 LED for self-timer

Claims (3)

A sensor array configured by arranging a plurality of pixels in a camera base length direction and detecting an image signal of a subject;
Detecting means for detecting a change in an image signal detected by the sensor array;
According to a change in the image signal detected by the detection means, vibration detection means for performing vibration detection,
With
The detection unit detects a movement of an image signal detected by the sensor array in the base line length direction, and detects a time change of an image signal output from a predetermined pixel among the plurality of pixels. A second detection unit, and a notification unit that notifies vibration detection information to the vibration detection unit based on a detection result of the first detection unit or the second detection unit. The notification unit includes the first detection unit. Notification of vibration detection information based on the detection result from the unit and notification of vibration detection information based on the detection result from the second detection unit. Features camera. 2. The camera according to claim 1, wherein the notifying unit performs stepwise notification when notifying vibration detection information based on a detection result from the first detecting unit. 3. 2. The camera according to claim 1, wherein the notification unit performs a binary notification when notifying the vibration detection information based on a detection result from the second detection unit. 3.

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