JP2010054820A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To give information in an easy-to-understand manner for not only a visually-impaired or hearing-impaired user but also an able-bodied person even when a photographed image is found to be defective immediately after the photographing, or under a condition in which shutter releasing time is long, suppress camera shake, and prevent missing of taking a photograph. <P>SOLUTION: A camera device has a determination means for determining the state of focusing and exposure of a photographed image in the photographed image, and a vibration drive mechanism for vibrating the camera body according to the result of determining the state of the image, and informs the user by vibration when the photographed image is determined as being defective. Alternatively, the camera device has an exposure time detection part for detecting appropriate photography exposure time, a vibration drive mechanism for vibrating the camera body, and vibration drive control means. The vibration time is changed according to the appropriate exposure amount for an image to be photographed, and the user is informed of the length of the shutter releasing time by vibration. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  According to the present invention, regarding a photographed image of a camera, a warning of a photographing failure according to the state of the photographed image after the completion of photographing, a shutter time length before and after photographing, and guidance of gripping are notified by vibration, and not only a disabled person but a healthy person It also relates to a camera control method that is easy to use.

  When shooting with the camera, the image stabilization function and AF function can often shoot a good image, but the user takes a variety of actions, so in some cases even with these functions, the result was taken. The image may be blurred or the exposure may be poor. If there is a big blur or poor exposure, you can make an immediate judgment by visually checking the LCD screen on the spot, or even switch to the enlarged display for more precise confirmation. There are many cases where there is little effort to confirm by enlarging the display when there is little blur, there is confidence that the user is not shaken, or when considering battery consumption. Such an image can be noticed only after it is confirmed on a personal computer or printed, but in many cases it is difficult to re-shoot the same image.

  Also, it is difficult for visually impaired people to check on the LCD screen.

  Also, the camera's AE function determines the brightness of the subject and determines the shutter time (exposure) necessary for good shooting. This makes it difficult to shoot, especially when the shutter time is long.

  In addition, it is difficult for a hearing-impaired person to hear the notification sound of the camera, so it is difficult to grasp the state of the camera.

  In addition, there is an increased possibility of camera shake due to the user not grasping the camera firmly.

In this way, as means for notifying the user of something unexpected for the user, means for notifying the user by vibration can be considered. (For example, Patent Document 1)
JP 2003-262899 A

  In the method of this document 1, a discriminating means for discriminating the operation status (for example, the charging status of the strobe) of various photographing preparation mechanisms provided in the camera main body, and a predetermined position inside the camera main body provided in the camera main body A vibration generation mechanism that generates vibration is provided, and when the determination unit determines that the preparation for photographing is completed, the vibration generation mechanism is operated to notify the user.

  However, Document 1 is a means for determining the pre-shooting preparatory operation status such as initial setting when turning on the power, charging the flash, and checking exposure conditions, and notifying the user that the shutter can be pressed. And does not notify the user of the status of the captured image after shooting. Therefore, even if the shot image is out of focus immediately after shooting, or as a result, the exposure status is poor, etc., if the user does not display the image and check it closely, it will shoot on the spot. Inability to deal with such problems as inability to take corrective actions such as missing the only image that should be unique to the user. In addition, once the exposure condition is OK, the user cannot grasp even a long shutter time at which camera shake is likely to occur. In addition, the user's grip is not promoted, and camera shake cannot be suppressed.

  The present invention has been made in view of the above-described conventional problems, and there is a problem in visual and auditory sense even when the situation of a photographed image is poor immediately after photographing or under a situation where the shutter time is long. It is an object of the present invention to provide a camera device capable of suppressing camera shake and avoiding missed shooting by notifying a user as well as a healthy person with vibration that can be understood.

In order to solve the above-mentioned problem, the camera of the invention according to claim 1 provides:
The captured image has a blur state determination unit that determines the level of the in-focus state, and includes a vibration drive mechanism that vibrates the camera body according to the determination result of the blur state, and it is determined that the photographed image is blurred. It is characterized by notifying the user by vibration at the time of occurrence.

In order to solve the above problems, the camera of the invention according to claim 2 provides:
The captured image has an exposure state determination means for determining the level of the exposure state, and includes a vibration drive mechanism that vibrates the camera body according to the determination result of the exposure state, and determines that the exposure of the captured image is poor. It is characterized by notifying the user by vibration when it is done.

In order to solve the above problem, the camera of the invention according to claim 3 is:
An exposure time detection unit that detects a proper exposure time for shooting, a vibration drive mechanism that vibrates the camera body, and a drive control unit that controls the vibration drive time according to the length of the detected exposure amount. The vibration time is changed in accordance with the appropriate exposure amount, and the user is notified of the length of the shutter time by vibration.

In order to solve the above problem, the camera of the invention according to claim 4 provides:
The camera according to any one of claims 1 to 3, further comprising a sound generation unit, which notifies the user by sound such as sound or electronic sound together with vibration.

In order to solve the above problem, the camera of the invention according to claim 5 is:
The camera according to any one of claims 1 to 4, wherein a vibration frequency of vibration is controlled in a range of 30Hz ± 20Hz.

  As described above, according to the present invention, not only a user who is visually or hearing impaired but also a healthy person even when the state of a captured image is bad immediately after shooting or under a situation where the shutter time is long. It is possible to provide a camera device capable of suppressing camera shake and avoiding missed shooting by informing through vibration that can be understood by a person. In addition, it is possible to grasp the situation even when it is difficult to visually recognize it in a bright place such as outdoors under a clear sky, in a situation where quietness is required, or even in a noisy place.

  Next, details of the present invention will be described in accordance with the description of the embodiments.

  Hereinafter, an apparatus and a method according to the present invention will be described with reference to the drawings. In the embodiments described below, a case where the apparatus and method according to the present invention are applied to an imaging apparatus that is a digital camera capable of capturing still images and moving images will be described as an example.

  FIG. 2 shows an external view of a digital camera as an example of the imaging apparatus of the present invention. In FIG. 2, 28 is a display unit for displaying images and various information. Reference numeral 72 denotes a power switch for switching between power on and power off. 61 is a shutter button. Reference numeral 60 denotes a mode switch for switching various modes. Reference numeral 111 denotes a connection cable for connecting the digital camera and an external device. Reference numeral 112 denotes a connector between the connection cable 111 and the digital camera. An operation unit 70 receives various operations from the user. The operation unit 70 includes operation members such as various buttons and a touch panel. Specific examples are as follows. Erase button, menu button, SET button, four-way key (up button, down button, right button, left button) arranged on the cross, wheel 73, and the like. Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. Reference numeral 201 denotes a recording medium slot for storing and communicating with the recording medium 200.

  FIG. 1 is a block diagram illustrating a configuration example of a digital camera as an example of an imaging apparatus of the present invention. Reference numeral 103 denotes a photographic lens, 101 denotes a shutter having a diaphragm function, and 22 denotes an imaging unit including a CCD, a CMOS element, or the like that converts an optical image into an electrical signal. Reference numeral 23 denotes an A / D converter that converts an analog signal into a digital signal, and is used when the analog signal output from the imaging unit 22 is converted into a digital signal. Moreover, it is used also when converting the analog signal output from the audio | voice control part 11 into a digital signal. The barrier 102 covers the imaging unit including the lens 103 of the digital camera 100 to prevent the imaging unit from being dirty or damaged.

  A timing generator 12 supplies a clock signal and a control signal to the imaging unit 22, the audio control unit 11, the A / D converter 23, and the D / A converter 13, and is controlled by the memory control unit 15 and the system control unit 50. Be controlled. An image processing unit 24 performs resize processing such as predetermined pixel interpolation and reduction and color conversion processing on the data from the A / D converter 23 or the data from the memory control unit 15. The image processing unit 24 also performs predetermined calculation processing using the captured image data, and the system control unit 50 performs exposure control and distance measurement control based on the obtained calculation result. Thereby, AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing of the TTL (through-the-lens) method are performed. The image processing circuit 24 further performs predetermined arithmetic processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained arithmetic result.

  A vibration drive unit 150 controls vibrations by the system control unit 50 based on the final calculation result.

  Output data from the A / D converter 23 is written into the memory 32 via the image processing unit 24 and the memory control unit 15 or directly via the memory control unit 15. The memory 32 is a memory for storing a file header when the voice data recorded in the microphone 10, a captured still image or moving image, and an image file are configured. The memory 32 has a storage capacity sufficient to store a predetermined number of still images, a moving image and sound for a predetermined time.

  A compression / decompression unit 16 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like, reads a captured image stored in the memory 32 using the shutter 101 as a trigger, performs compression processing, and finishes the processing. The data is written to the memory 32. Further, the compressed image read into the memory 32 from the recording unit 19 or the like is read and decompressed, and the processed data is written into the memory 32. The image data written to the memory 32 by the compression / decompression unit 16 is filed in the file unit of the system control unit 50 and recorded on the recording medium 200 via the interface 18.

  The memory 32 also serves as an image display memory, 13 is a D / A converter, 28 is an image display unit including an LCD, and the display image data written in the memory 32 is D / A. The image is displayed by the image display unit 28 via the converter 13.

  An audio signal 10 output from the microphone is converted into a digital signal by the A / D conversion unit 23 via the audio control unit 11 including an amplifier and the like, and then stored in the memory 32 by the memory control unit 15. Is done. On the other hand, after the audio data recorded on the recording medium 200 is read into the memory 32, a signal controlled by the audio control unit 11 via the D / A conversion unit 13 is generated by the speaker 38.

  The nonvolatile memory 56 is an electrically erasable / recordable memory, and for example, an EEPROM or the like is used. Stores constants, programs, and the like for operation of the system control unit 50.

  Reference numeral 50 denotes a system control unit that controls the entire digital camera 100. A system memory 52 expands constants, variables, programs read from the non-volatile memory 56, and the like for operation of the system control unit 50.

  The first shutter switch SW1 (62), the second shutter switch SW2 (64), and the operation unit 70 are operation means for inputting various operation instructions to the system control unit 50.

  Reference numeral 60 denotes a mode switch, which can switch the operation mode of the system control unit 50 to any one of a still image recording mode, a moving image recording mode, a reproduction mode, and the like.

  The first shutter switch SW1 (62) is turned on during halfway operation of the shutter button 61 provided in the digital camera 100, and AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) ) Process, EF (flash pre-emission) process and the like start operation.

  The second shutter switch SW2 (64) is turned ON when the operation of the shutter button 61 is completed (fully pressed), and starts a series of imaging processing operations from reading a signal from the imaging unit 22 to writing image data on the recording medium 200. Instruct.

  Each operation member of the operation unit 70 is appropriately assigned a function for each scene by selecting and operating various function icons displayed on the display unit 28, and functions as various function buttons. Examples of the function buttons include an end button, a return button, an image advance button, a jump button, a narrowing button, and an attribute change button. For example, when a menu button is pressed, a menu screen on which various settings can be made is displayed on the image display unit 28. The user can make various settings intuitively using the menu screen displayed on the image display unit 28, the four-way key, and the SET button.

  The power switch 72 switches between power on and power off.

  A power control unit 39 includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, and detects whether or not a battery is attached, the type of battery, and the remaining battery level. Further, the DC-DC converter is controlled based on the detection result and the instruction of the system control circuit 50, and a necessary voltage is supplied to each part including the recording medium 200 for a necessary period.

  A power supply unit 30 includes a primary battery such as an alkaline battery and a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, and a Li battery, an AC adapter, and the like. Reference numerals 33 and 34 denote connectors, which connect the power supply unit 30 and the power supply control unit 39.

  Reference numeral 40 denotes an RTC (Real Time Clock), which holds a power supply unit therein separately from the power supply control unit 39, and continues the clock operation state even when the power supply unit 30 is turned off. The system control unit 50 performs timer control using the date and time acquired from the RTC 40 at startup.

  Reference numeral 18 denotes an interface with the recording medium 200 such as a memory card or a hard disk, and reference numeral 35 denotes a connector for connecting the recording medium 200 and the interface 18. A recording medium attachment / detachment detection unit 98 detects whether or not the recording medium 200 is attached to the connector 35.

  Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. The recording medium 200 includes a recording unit 19 composed of a semiconductor memory, a magnetic disk, and the like, an interface 37 with the digital camera 100, and a connector 36 for connecting the recording medium 200 and the digital camera 100.

  The communication unit 110 performs various communication processes such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication.

  A connector (antenna in the case of wireless communication) 112 connects the digital camera 100 to another device via the communication unit 110.

(Overall flow)
FIG. 4 shows a flowchart for explaining the overall operation of the digital camera 100 of the present embodiment.

  When the power switch 72 is operated and the power is turned on, the system control unit 50 initializes flags, control variables, and the like in S301. Subsequently, management processing relating to the file recorded on the recording medium 200 is started (S313). In step S303, the system control unit 50 determines the set position of the mode switch 60. If the still image recording mode is set, the process advances to step S304. Details of the still image recording mode processing in S304 will be described later with reference to FIG. If the mode switch 60 is set to the moving image recording mode in S303, the process proceeds to S310. In the case of the playback mode in S311, the process proceeds to playback mode processing S312. If any other mode has been set, the process proceeds to S305, and the system control unit 50 executes a process according to the selected mode. If the process is completed, the process proceeds to S306.

  In S306, the system control unit 50 determines the setting position of the power switch 72. If the power switch 72 is set to power on, the system control unit 50 returns to S303. If the power switch 72 is set to power off in S306, the process proceeds to S307 to perform a predetermined end process. The termination process includes the following process. The display on the display unit 28 is changed to the end state, and the lens barrier 102 is closed to protect the imaging unit. Parameters, setting values, and setting modes including flags and control variables are recorded in the nonvolatile memory 56. Shut off the power to parts that do not require power supply. When the termination process is completed, the process proceeds to S308 and the process is terminated.

(Shooting mode)
FIG. 3 is a flowchart of the still image recording mode process in S304 described above.

  When starting the still image recording mode, the system control unit 50 determines the shooting mode by one of the following methods (S113). The shooting mode at the end of the previous still image recording mode is acquired from the nonvolatile memory 56 and stored in the system memory 52. Alternatively, if the operation unit 70 is operated by the user and there is an input for setting the shooting mode, the input shooting mode is stored in the system memory 52.

  When the shooting mode is determined, a through display for displaying image data from the imaging unit 22 is performed (S115). Subsequently, the power source control means 39 determines whether the remaining capacity of the power source 30 constituted by a battery or the like, the presence or absence of the recording medium 200, or the remaining capacity has a problem in the operation of the image processing apparatus 100 (S116). If there is, a predetermined warning is displayed by image or sound using the display unit 28 (S114), and then the process returns to the beginning of the still image recording mode.

  If there is no problem with the state of the power supply 30 or the recording medium, automatic assignment on / off setting of classification information is performed as necessary in S117.

  Subsequently, face detection is performed to detect whether or not a human face exists in the through-displayed image signal (S118). When a human face is detected in S118, the position coordinates, size (width, height), detected number, reliability coefficient, etc. detected in the image signal are stored in the system memory 52 as face information. If not detected, 0 is set in areas such as position coordinates, size (width, height), detected number, reliability coefficient, etc. in the system memory 52.

  Subsequently, if the shutter switch SW1 has not been pressed (S119), the classification information automatic assignment on / off setting S117 and the face detection process S118 are repeated.

  If the shutter switch SW1 is pressed (S119), the process proceeds to S122.

  The system control unit 50 performs a distance measurement process to focus the photographing lens 103 on the subject, performs a photometry process, and determines an aperture value and a shutter time (S122). In the photometric process, the flash is set if necessary. At this time, if a face is detected in S118, distance measurement can be performed within the detected face range.

  If the distance measurement / photometry process S122 is completed, the process proceeds to S125.

  If the shutter switch SW2 is not pressed (S125) and the shutter switch SW1 is also released (S126), the process returns to S117.

  If the shutter switch SW2 is pressed (S125), the display state of the image display unit 28 is set to the fixed color display state (S128), and the process proceeds to S129.

  In step S129, the system control unit 50 executes the following shooting process. Exposure for writing captured image data in the memory 32 via the image sensor 22, A / D converter 23, image processing circuit 24, memory control circuit 15, or directly from the A / D converter via the memory control circuit 15. processing. Using the memory control circuit 15 and, if necessary, the image processing circuit 24, image processing written in the memory 32 is read to perform shooting processing consisting of development processing for performing various processing (S129).

  The system control unit 50 performs quick review display of the captured image data on the image display unit 28 (S133).

  After the quick review display, the system control unit 50 executes a recording process for writing the image data obtained by the photographing process as an image file to the recording medium 200 (S120).

  When the recording process S120 ends, it is possible to continue the quick review display on the image display unit 28 until the shutter switch SW2 is released, and to carefully check the captured image data.

  The shutter switch SW2 was released when the recording process S120 was completed, or the shutter switch SW2 was released after the quick review display was confirmed by continuing to press the shutter switch SW2 to confirm the captured image. If so (S135), the process proceeds to S137. In S137, the process proceeds to S139 after a predetermined minimum review time has elapsed.

  The system control unit 50 sets the display state of the image display unit 28 to the through display state (S139), and proceeds to S141.

  In this case, after confirming the photographed image data by the quick review display on the image display unit 28, it is possible to enter a through display state in which the image data from the imaging unit 22 is sequentially displayed for the next photographing.

  If the shutter switch SW1 has been pressed (S141), the system control unit 50 returns to S125 to prepare for the next shooting.

  If the shutter switch SW1 has been released (S141), the system control unit 50 ends the series of shooting operations and returns to the shooting standby state.

(Shooting process)
FIG. 5 is a flowchart of the photographing process in S129.

  In accordance with the photometric data stored in the system memory 52, the system control unit 50 exposes the image sensor 22 by opening the shutter 101 having an aperture function according to the aperture value (S401, S402).

  The system control unit 50 waits for the exposure of the imaging unit 22 to end in accordance with the photometric data (S405), closes the shutter 101 (S406), reads the charge signal from the imaging unit 22, and reads the A / D converter 23 and the image processing circuit 24. The photographed image data is written into the memory 32 via the memory control circuit 15 or directly from the A / D converter 23 via the memory control circuit 15 (S407).

  The system control unit 50 reads the image data written in the memory 32 using the memory control circuit 15 and, if necessary, the image processing circuit 24, and performs image processing such as compression processing using the compression / decompression unit 16 (S408). Are sequentially performed, and the processed image data is written in the memory 32.

  The system control unit 50 reads the image data from the memory 32 and transfers the display image data via the memory control circuit 15 (S409).

  Next, the system control unit 50 processes the image data from the memory 32 via the memory control circuit 15 via the image processing unit 24, and detects the blurred state of the image (S410). When it is determined that the detected image is blurred by the blur state detection method as described later, the vibration drive unit 150 is driven by the system control unit 50. When it is determined that the detected image is not blurred, the vibration driving unit 150 is not driven.

  When the series of processing is finished, the photographing processing routine S129 is finished.

(Detect blur condition)
FIG. 6 shows an example of the blur state detecting means in S410. When determining the blurred state, first, the contrast ratio of the video signals in the horizontal and vertical scanning directions is detected, and the contrast ratio is divided into an area where the contrast ratio is higher than a certain level and a low area (S451). When focus is not achieved, the contrast ratio is lowered and the frequency component is also lowered. It should be noted that the contrast ratio as a threshold may be set in advance as a standard value. If the size of the blur area is equal to or larger than a predetermined area, it is determined as blur, and if it is less than the predetermined area, it is determined as not blur (S452, S453).

  In addition to this example, the in-focus state can be detected by complete digital image processing in which a contour image is extracted by filtering processing and is determined based on a change in luminance. In order to prevent malfunction, not only the area of the out-of-focus area that is out of focus but also whether or not it is continuous around or around the main subject may be added to the judgment material.

(vibration)
The electronic circuit automatically selects whether you want to take a portrait image with a shallow depth of field by manually opening the aperture when the main subject is in focus and the blurred area occupies a certain area or more. If it is determined that the image is out of focus, the vibration drive unit 150 vibrates the digital camera 100, so that it is necessary for the photographer to hold the image again without having to check the photographer. It is transmitted by vibration.

  In the present invention, the vibration by the vibration driving unit 150 may be notified to the user together with an audible notification such as voice or electronic sound so that the user can be more strongly evoked. For example, if it is determined that the photographed image is blurred, a notification sound to call attention (for example, an electronic sound that repeats 0.5 seconds ON and 0.2 seconds OFF 5 times as defined by JIS, etc.) , Vibrates with sound such as “The photographed image is blurred”. As described above, a configuration in which vibration is generated and notification by a plurality of means is easier for a disabled person to determine.

  Further, by setting the frequency of vibration to 30 Hz ± 20 Hz in the vicinity of 30 Hz where humans feel the most slippery, it is possible to encourage the photographer to hold the digital camera 100 more securely.

  FIG. 7 is a flowchart of the photographing process in S129 of the present embodiment.

  In this embodiment, image data taken through exposure (S501 to S506) is written as shooting data (S507), image processing (S508) is performed, image data is transferred (S509), and shooting is completed. The exposure state of the image is detected (S510). When it is determined that the exposure of the detected image is inappropriate by an exposure state detection method as will be described later, the vibration control unit 150 is driven by the system control unit 50. When the exposure of the detected image is determined to be appropriate, the vibration driving unit 150 is not driven.

  When the series of processing is finished, the photographing processing routine S129 is finished.

(Exposure status detection)
FIG. 8 shows an example of the exposure state detection means in S510. When determining the exposure state, first, a histogram of video signals in the horizontal and vertical scanning directions is detected, and the histogram value is divided into an area higher than a certain range and an area lower than the same range (S551). The histogram range serving as the threshold may be set in advance as a standard value. If the size of the histogram area outside the predetermined range is equal to or larger than a predetermined area, it is determined that the exposure is poor, and if it is less than the predetermined area, it is determined that the exposure is good (S552, S553).

  When it is determined that the exposure is poor, the vibration driving unit 150 vibrates the digital camera 100.

  FIG. 9 is an example of a flowchart of the still image recording mode process in S304 described above.

  The system control unit 50 performs a distance measurement process to focus the photographing lens 103 on the subject, performs a photometry process, and determines an aperture value and a shutter time (S122). Further, according to the length of the shutter time determined by the system control unit 50, the vibration driving unit 150 vibrates the digital camera 100. The longer the shutter time, the longer the vibration, and the shorter the shutter time, the vibration. Also control to vibrate for a short time.

Block diagram of digital camera External view of digital camera 7 is a flowchart showing a series of processes in the still image recording mode of the digital camera 100 according to the first and second embodiments. Flow chart of overall operation of digital camera 100 Flowchart of shooting operation of digital camera of embodiment 1 Flowchart for determining the focus of the digital camera of Embodiment 1 Flowchart of shooting operation of digital camera of embodiment 2 Flowchart of exposure judgment of digital camera of embodiment 2 9 is a flowchart showing a series of processes in the still image recording mode of the digital camera 100 according to the third embodiment.

Explanation of symbols

10 Microphone
11 Voice control unit
12 Timing generator
13 D / A converter
15 Memory controller
16 Compression / decompression unit
18 Digital camera side recording media I / F
19 Recording section
22 Imaging unit
23 A / D converter
24 Image processing section
28 Display
30 Power supply
32 memory
33 Power connector
34 Power connector
35 Digital camera / recording medium connector
36 Digital camera / recording medium connector
37 Recording medium side recording medium I / F
38 Speaker
39 Power control
40 RTC
50 System controller
52 System memory
56 Nonvolatile memory
60 Mode selector switch
61 Shutter button
62 Shutter switch
64 Shutter switch
70 Operation unit
72 Power switch
73 wheel
98 Recording medium attachment / detachment detector
100 digital camera
101 shutter
102 barrier
103 Lens
110 Communication Department
111 Connecting cable
112 Connector (antenna)
150 Vibration drive unit
200 recording media
201 Recording media slot

Claims (5)

  It has a blur state determination means for determining the level of the in-focus state for the captured image, and has a vibration drive mechanism that vibrates the camera body according to the determination result of the blur state, and it is determined that the captured image is blurred. This camera is characterized by notifying the user by vibration when touching.   It has an exposure state determination means for determining the level of the exposure state of the captured image, and includes a vibration drive mechanism that vibrates the camera body according to the determination result of the exposure state, and determines that the exposure of the captured image is poor. A camera that notifies the user by vibration when it is pressed.   An exposure time detection unit that detects a proper exposure time for shooting, a vibration drive mechanism that vibrates the camera body, and a drive control unit that controls the vibration drive time according to the length of the detected exposure amount. A camera characterized in that the vibration time is changed according to the appropriate exposure amount, and the user is notified of the length of the shutter time by vibration.   The camera according to any one of claims 1 to 3, further comprising a sound generation unit, which notifies the user by sound or electronic sound together with vibration.   The camera according to any one of claims 1 to 3, wherein the vibration frequency of the vibration is controlled in a range of 30Hz ± 20Hz.

Images