JP2012186726A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire as much information on lenses as possible and utilize the information.SOLUTION: A digital camera 20 acquires a lens image as an appearance image of a lens barrel on which setting values changing in photographing are displayed, analyzes the lens image, recognizes indices and numbers included in the lens image by image recognition, acquires numbers indicated by the indices as the setting values, and displays and outputs the acquired setting values. The setting values include at least one of the F-value of lenses, a range finder value, and a focal length. Thus, for example, even when a lens barrel having no electronic contact point is mounted, lens information can be acquired from an appearance image.

Description

  The present invention relates to a photographing apparatus.

  Conventionally, as a photographing apparatus, a focal length is calculated based on a change amount of an angle of an optical axis of a lens unit and a change amount of two images, and the focal length is recorded as tag information of image data. There have been proposed ones that are used for the calculation of image blur and the blur correction coefficient (for example, see Patent Document 1). In this apparatus, focal length information of the interchangeable lens unit can be acquired without using memory on the lens side or user input.

JP 2010-283463 A

  However, in the above-described apparatus, the focal length can be obtained without being limited to acquisition from the lens unit by electronic connection or the like, but only the set value of the lens unit based on the captured image data obtained by photographing the subject through the lens unit. There was a limit to the information that could be obtained. For this reason, it has been desired to acquire information about as many lenses as possible.

  The present invention has been made in view of such a problem, and a main object of the present invention is to provide an imaging apparatus that can acquire information about as many lenses as possible and use the information.

  The present invention adopts the following means in order to achieve the main object described above.

The photographing apparatus of the present invention
A mounting portion for attaching a lens tube that has a lens and displays a setting value that changes during shooting,
An image acquisition unit that acquires a lens image that is an image of an appearance of a lens cylinder attached to the attachment unit including the setting value;
An information acquisition unit that analyzes the lens image and acquires the setting value;
An output unit for outputting the acquired set value;
A main photographing unit for performing a main photographing with light passing through the lens;
It is equipped with.

  In this photographing apparatus, a lens image that is an external appearance image of a lens cylinder on which a setting value that changes during photographing is displayed is acquired, the lens image is analyzed to obtain a setting value, and the obtained setting value is output. In this way, for example, even when a lens cylinder having no electronic contact is attached, lens information (setting value) can be acquired from the appearance image. Accordingly, it is possible to acquire and use information about as many lenses as possible.

  In the photographing apparatus of the present invention, the information acquisition unit may recognize an index and a number included in the lens image by image recognition, and acquire the number indicated by the index as the set value.

  In the photographing apparatus of the present invention, the information acquisition unit may acquire at least one or more of the F value, T value, distance meter value, and focal length of the lens as the set value. In this way, information such as the F value, T value, distance meter value, and focal length can be used later.

  In the photographing apparatus of the present invention, the image acquisition unit may be disposed in a region above the attachment part on the housing of the photographing apparatus. In this way, it is easy to acquire the set value displayed on the lens tube attached to the attachment portion.

  In the imaging device of the present invention, the image acquisition unit includes an imaging element that captures the lens image, and a position variable unit that relatively changes a position of the lens cylinder attached to the attachment unit and the imaging element. It may be provided. By doing this, it is possible to obtain the set value displayed on the lens cylinder by moving the image sensor, and thus it is possible to obtain information on lenses of a wider variety of lens cylinders. At this time, the position variable unit may include a support member that supports the imaging element so as to be movable between a housing side of the photographing apparatus and a tip end side of a lens tube attached to the attachment unit. Good. If it carries out like this, it will be easy to move an image sensor by supporting by a support member. The position variable unit includes a drive unit that moves the image sensor, and the drive unit moves the position of the image sensor until the information acquisition unit acquires the setting value from the lens image. Also good. By doing so, it is possible to acquire the set value displayed on the lens cylinder by moving the image sensor, so that it is possible to more reliably obtain information about the lens.

  The imaging device of the present invention may include a display unit that displays an image, and the output unit may output the acquired setting value to the display unit. By doing this, it is not necessary to check the set value by looking at the lens tube and confirm the subject by looking at the viewfinder, so that it is easy to shoot. At this time, the output means may display the set value together with an image of the subject on the display unit. In this way, it is not necessary to check the current lens setting while looking away from the subject, and it is easier to shoot.

  The photographing apparatus according to the present invention includes a storage unit that stores the image data of the main photographing, and the output unit associates the image data with the main photographing and outputs the acquired setting value to the storage unit. It is good. In this way, the shooting condition of the image data can be confirmed later, and this shooting condition can be used.

1 is a configuration diagram showing an outline of the configuration of a digital camera 20. FIG. 3 is a cross-sectional view of the digital camera 20. The flowchart which shows an example of a lens information acquisition process routine. Explanatory drawing which acquires the information of 21 A of lens units. Explanatory drawing which acquires the information of the lens unit 21B. Explanatory drawing of the display screen 80 of EVF26. Explanatory drawing of the image data 90 and the imaging | photography information 92. FIG. Explanatory drawing of the information displayed on the lens unit front. Explanatory drawing of digital camera 20B-20D. Explanatory drawing of the digital camera 20E. Explanatory drawing of the display screen 81. FIG.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing an outline of the configuration of a digital camera 20 according to an embodiment of the present invention, and FIG. As shown in FIG. 1, the digital camera 20 according to the present embodiment includes a lens unit 21 that receives light from a subject, a display unit 25 that displays an image, an operation unit 30 that receives input from a user, a memory card, and the like. The memory card controller 36 that exchanges data with the MC, the main controller 40 that controls the entire apparatus, the imaging unit 50 that performs imaging, and setting information related to imaging of the lens unit 21 are acquired from the appearance of the lens unit 21. And a setting acquisition unit 60.

  The lens unit 21 is attached to the housing 11 of the digital camera 20 via an attachment portion 56 that is a lens mount so that the lens unit 21 can be attached and detached. The lens unit 21 is configured by combining a convex lens and a concave lens, a part of which is configured to be movable in the axial direction inside the lens tube, a diaphragm mechanism 23 for adjusting the amount of light, a lens housing. A setting display unit 24 is provided on the upper part of the body (lens tube) for displaying setting values that change during shooting. The lens group 22 includes a fixed lens fixed to the front side of the lens cylinder of the lens unit 21 and a moving lens supported on the rear side (attachment portion 56 side) of the lens cylinder. The lens unit 21 is configured as a so-called old lens unit that is not electronically connected to the housing 11 side. The lens unit 21 can change set values such as an aperture value, an F value, a T value, a distance meter value, and a focal length by rotating one or more rings disposed on the outer periphery of the lens cylinder. . In the lens unit 21, each current setting value can be grasped based on the positional relationship between the index (◯, Δ, |, etc.) of the setting display unit 24 provided on the ring or the lens tube and the number.

  The display unit 25 includes an EVF (Electronic View Finder) 26 that displays a finder image obtained by the image sensor of the finder image capturing unit 54, a monitor 28 that displays various setting screens and captured images obtained from the lens unit 21, and the like. It has.

  The operation unit 30 is a main controller that controls the power key 32 that is pressed when the digital camera 20 is activated and terminated, or the timing at which an image formed on the image sensor 51 is captured through the lens unit 21 when pressed by a user operation. The shutter key 34 to be output to 40 is included. The shutter key 34 can be half-pressed or fully pressed by a user operation. When the shutter key 34 is half-pressed, a half-press signal is output to the main controller 40. When the shutter key 34 is pressed halfway, the full-press signal is output to the main controller 40. Output to. Although not shown, the operation unit 30 has buttons for setting a series of settings necessary for shooting, such as a dial switch capable of setting a shooting mode, a button for setting a shutter speed, and a button for setting white balance. It is arranged.

  The memory card controller 36 reads out image data stored in the memory card MC and executes processing for writing the image data generated by the imaging unit 50 into the memory card MC. The digital camera 20 stores image data including image capturing information including image capturing conditions such as F value, focal length, and shutter speed.

  The main controller 40 is configured as a microprocessor centered on a CPU 42, and exchanges data with a flash memory 43 that stores processing programs and various tables, a RAM 44 that temporarily stores data, and external devices. And an interface (I / F) 45. Various input signals from the operation unit 30, various data read from the memory card MC, various signals from the imaging unit 50, and the like are input to the main controller 40. The main controller 40 outputs various data to be written to the memory card MC, a signal to the display unit 25, and the like.

  The imaging unit 50 generates an image sensor 51 that performs imaging using light that has passed through the lens unit 21, an image generation unit 52 that generates image data from an electrical signal, a lens control unit 53 that controls the lens unit 21, and a finder image. A finder image capturing unit 54, an image capturing mechanism 55 including a structure used for image capturing, and the like are provided. The image sensor 51 is a sensor that converts light into an electrical signal by photoelectric conversion. The image sensor 51 includes a plurality of photodiodes arranged in a matrix and a CCD that is formed for each photodiode and transfers charges received from the photodiode. Note that a CMOS type image sensor may be employed as the image sensor. The image generating unit 52 generates image data from the digital signal by performing an analog front end (AFE) that converts the electrical signal output from the image sensor 51 into a digital signal, white balance processing, sharpness processing, gamma correction processing, and the like. A processing execution unit is provided. The finder image capturing unit 54 includes a finder image sensor, and generates a finder image. The imaging mechanism 55 includes, for example, a mounting portion 56 for mounting the lens unit 21 to the housing 11, a shutter 57 disposed between the lens unit 21 and the image sensor 51, and the like. The mounting portion 56 is equipped with a lens unit that has an electronic contact and can electrically acquire and indicate a set value such as an F value, and a lens unit that does not have an electronic contact and cannot electrically acquire a set value. It is configured to be removable.

  As shown in FIGS. 1 and 2, the setting acquisition unit 60 is disposed in an area above the attachment portion 56 on the housing 11 of the digital camera 20. The setting acquisition unit 60 includes an imaging device 61 that captures an image (lens image) of the lens unit 21, a support member 62 that supports the imaging device 61, a drive unit 63 that moves the support member 62, and a captured lens image. And an image recognition unit 64 that acquires the set value of the lens and an output unit 65 that outputs the acquired set value. The imaging device 61 acquires a lens image that is an image of the appearance of the lens tube of the lens unit 21 including the setting value displayed on the setting display unit 24 by photographing. The imaging device 61 is a mechanism including a lens, an imaging sensor that converts light passing through the lens into an electrical signal by photoelectric conversion, and a light source that illuminates the lens unit 21. The lens unit 21 is arranged to look down.

  The support member 62 is a rod-like member that supports the imaging device 61 so as to be movable between the housing 11 side of the digital camera 20 and the front end side of the lens tube attached to the attachment portion 56. The support member 62 is configured to be able to expand and contract by sliding a plurality of rod-shaped members. The drive unit 63 extends and contracts the support member 62 by a motor (not shown), and moves the imaging device 61. In the setting acquisition unit 60, since the types of old lens units that can be attached to the attachment portion 56 are known in advance, a plurality of positions (casings for photographing the setting display portion 24 of the lens unit attached to the attachment portion 56). 11 is determined in advance, and the drive unit 63 adjusts the length of the support member 62 so that the imaging device 61 is positioned at the determined position. The support member 62 and the drive unit 63 constitute a position variable unit that relatively changes the positions of the lens cylinder attached to the attachment unit 56 and the imaging device 61.

  The image recognition unit 64 analyzes the lens image and acquires the setting value displayed on the setting display unit 24. The image recognizing unit 64 has a function of recognizing an index and a number included in the lens image by image recognition and acquiring a number indicated by the index as a set value. The image recognition unit 64 has a function of acquiring at least one or more of the F value, T value, distance meter value, and focal length of the lens as set values. Specifically, as described above, the index position, index shape, characters, and the like of the lens unit that can be attached to the attachment portion 56 are stored in advance as index data, and the stored data is determined according to the position of the imaging device 61. Image recognition is performed by selecting an index shape, an index position, a character, and the like from the images and comparing them with an image captured by the imaging device 61. The output unit 65 has a function of outputting the setting value acquired by the image recognition unit 64 to the controller 40, the display unit 25, and the memory card controller 36.

  Next, the operation of the digital camera 20 of this embodiment configured as described above will be described. FIG. 3 is a flowchart showing an example of a lens information acquisition process routine executed by the setting acquisition unit 60. In this routine, after the power key 32 is turned on, the set value is not electrically obtained from the lens unit 21 attached to the attachment portion 56, that is, the old lens unit is attached to the attachment portion 56. Executed when. When this routine is started, the setting acquisition unit 60 takes a lens image, which is an appearance image of the lens unit 21 attached to the attachment portion 56, by the imaging device 61 (step S100). Immediately after the power is turned on, the imaging device 61 is disposed closest to the housing 11 side.

  Next, the image recognition unit 64 executes image recognition processing of the lens image (step S110). In the image recognition process, the image recognition unit 64 reads the index data corresponding to the position of the imaging device 61 and performs a process of comparing with the lens image. It is determined whether or not the set value is recognized by this image recognition processing (step S120). When the set value is not recognized, the support member is arranged so that the drive unit 63 is arranged at the next predetermined position. 62 is expanded (step S130), and the processing after step S100 is performed. That is, the processes in steps S100 to S130 are repeated until the set value is recognized.

  Here, the processing of steps S100 to S130 will be specifically described. FIG. 4 is an explanatory diagram for acquiring information about the lens unit 21A, and FIG. 5 is an explanatory diagram for acquiring information about the lens unit 21B. When the setting value of the lens is not recognized by photographing at the initial position (see FIG. 1) of the setting acquisition unit 60, the support member 62 is extended (see FIG. 4). As shown in FIG. 4, when the lens unit 21 </ b> A that matches the position of the expanded image pickup device 61 is attached to the attachment portion 56, the lens image 70 taken by the image pickup device 61 has a number or index on the setting display portion 24. (●) is included. Further, when the lens unit 21B is attached and the lens setting value is not recognized even at the current position, the support member 62 is further extended (see FIG. 5). As shown in FIG. 5, when the lens unit 21 </ b> B that matches the position of the expanded imaging device 61 is attached to the mounting portion 56, the lens image 71 photographed by the imaging device 61 has a number or index of the setting display unit 24. (○) is included. In this manner, the support member 62 is extended to a position where the numbers and indices on the setting display unit 24 can be recognized from the lens image. Thereafter, for example, in FIG. 5, the image recognition unit 64 performs character recognition from the lens image 71 and extracts characters. In addition to recognizing an index (◯) in the vicinity of a character, characters such as “2.8” and “1.5” can be recognized. Among these, “2.8”, which is a multiple of √2, is recognized as an F value, and an F value is obtained. On the other hand, since there is no large value such as “50” in the character-recognized number, it can be estimated that the lens is a single focus lens having a fixed focal length. Furthermore, in the lower character group, pairs of the same numbers such as “2, 2” and “4, 4” are arranged with a vertical line as a boundary. For this reason, it can be estimated that these numbers indicate the values of the distance meter. Since the index (◯) is close, it can be estimated that the subject is set to 1.5. Further, the range of the lower distance meter is referred to from the read F value “2.8” information, and from the characters “1.2” and “2” adjacent to “1.5”, 1.2-2 It can be inferred that the focus is roughly within the range. As described above, in the digital camera 20, the setting information regarding the lens represented in the setting display unit 24 such as the F value and the distance meter value in the lens unit 21 having no electronic contact is acquired from the photographed image of the appearance. To do. When the setting display unit 24 is dark and it is difficult to recognize the lens image 71, the lens image 71 is easily recognized by irradiating the setting display unit 24 with light from the light source of the imaging mechanism. You may do it. Although not shown, when the set value is not recognized no matter what the length of the support member 62 is, a message may be displayed on the monitor 28 and this routine may be terminated.

  Now, after a setting value is recognized by step S120, the setting acquisition unit 60 fixes the support member 62 by the drive part 63 (step S140). Subsequently, in order to grasp the change in the setting of the lens unit 21 by the user, the lens unit 21 is photographed (step S150) and image recognition processing is executed (step S160) and recognized in the same manner as in steps S100 and S110. The set value is displayed and output (step S170). In this display output, the output unit 65 displays the set value on the display unit 25. FIG. 6 is an explanatory diagram of an example of the display screen 80 of the EVF 26. Here, an example in which the set value is displayed on the EVF 26 is shown. As shown in FIG. 6, the display screen 80 displayed on the EVF 26 is obtained by superimposing an information display unit 82 including a shutter speed and an F value as a setting value on the finder image captured by the finder image capturing unit 54. It is configured as a screen. Here, since the focus range (1.2 to 2) estimated from the distance meter value is also displayed, it can also serve as a focus assist. The user takes a picture while viewing such a display screen 80.

  Then, it is determined whether the shutter key 34 has been pressed and the main shooting has been performed (step S180). When the main shooting has been performed, the setting value is stored and output (step S190). In this stored output, the setting value is output to the memory card controller 36 after the depression signal of the shutter key 34 is input from the controller 40. Receiving this, the controller 40 stores the image data of the main photographing and the setting value at the time of photographing on the memory card MC via the memory card controller 36. FIG. 7 is an explanatory diagram of the image data 90 and the shooting information 92. As shown in FIG. 7, the shooting information 92 includes information such as the shooting mode, shooting date and time, and shutter speed obtained from the imaging unit 50, the F value obtained by the setting acquisition unit 60, the distance meter value, Includes focal length. In addition, as shown in FIG. 8, it is good also as what acquires a focal distance by image | photographing the front image of the lens unit 21 using another lens beforehand, and recognizing the character by the image recognition part 64. FIG. For example, information such as a focal length can be acquired by recognizing characters of 35 mm and F1.2.

  After step S190 or when the main shooting is not performed in step S180, it is determined whether the shooting is finished based on whether the power key 32 is turned off (step S200), When shooting is not completed, the processing from step S150 is executed. On the other hand, when the photographing is finished, the support member 62 is contracted and the imaging mechanism is moved to the standby position (step S210), and then this routine is finished. As described above, when the old type lens unit 21 having no electronic contact is attached to the mounting portion 56 of the digital camera 20, the setting acquisition unit 60 acquires the appearance image of the lens unit 21 and sets the setting value. Display output and memory output.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The mounting portion 56 of the present embodiment corresponds to the mounting portion of the present invention, the imaging device 61, the support member 62, and the drive unit 63 correspond to an image acquisition unit, the imaging device 61 corresponds to an imaging device, the support member 62, and The drive unit 63 corresponds to a position variable unit, the support member 62 corresponds to a support member, the drive unit 63 corresponds to a drive unit, the image recognition unit 64 corresponds to an information acquisition unit, and the output unit 65 serves as an output unit. The imaging unit 50 corresponds to the main photographing unit, the display unit 25 corresponds to the display unit, and the memory card controller 36 corresponds to the storage unit.

  According to the digital camera 20 of the present embodiment described in detail above, a lens image that is an external appearance image of a lens barrel on which a setting value that changes during shooting is displayed, the lens image is analyzed, and an index included in the lens image And the number are recognized by image recognition, the number indicated by this index is acquired as a set value, and the acquired set value is output. Thus, for example, lens information can be acquired from the appearance image even when a lens cylinder having no electronic contact is attached. Accordingly, it is possible to acquire and use information about as many lenses as possible. Moreover, since at least one or more of the F value, the distance meter value, and the focal length of the lens is acquired as the set value, these pieces of information can be used later. Furthermore, since the setting acquisition unit 60 is disposed in an area above the attachment portion 56 on the housing 11 of the digital camera 20, the setting acquisition unit 60 acquires the setting value displayed on the lens cylinder attached to the attachment portion 56. Cheap. Furthermore, since the image pickup apparatus 61, the support member 62, and the drive unit 63 are provided, the image pickup element can be supported by the support member and moved to acquire the set value displayed on the lens tube. Information regarding the lens barrel can be obtained more reliably. Since a screen in which the setting value is superimposed on the viewfinder image is displayed on the display unit 25, the user does not need to look away from the subject to check the current lens setting, so that it is easier to take a picture. Since the setting value is stored in the shooting information 92 of the image data 90, the shooting condition of the image data can be confirmed later, and this shooting condition can be used.

  In addition, accuracy such as automatic exposure can be improved by using the set value. Furthermore, since it is realizable with the imaging device 61, it can implement | achieve cheaply and simply. Furthermore, it is possible to deal with a wide variety of interchangeable lenses only by changing the image recognition algorithm. Since the setting value is displayed together with the finder image on the EVF 26, the current setting can be confirmed while looking through the finder, so that the user can concentrate on shooting. Another advantage is that it is difficult to miss a photo opportunity.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, the digital camera 20 includes the setting acquisition unit 60 that extends the rod-shaped support member 62 and photographs the setting display unit 24. However, the configuration of the setting acquisition unit 60 is not limited thereto. Absent. Specifically, the following aspects may be adopted. FIG. 9 is an explanatory diagram of the digital cameras 20B to 20D, and FIG. 10 is an explanatory diagram of the digital camera 20E. For example, as illustrated in FIG. 9A, a digital camera 20 </ b> B including a setting acquisition unit 60 </ b> B fixed to the upper portion of the housing 11 may be used. That is, the support member 62 and the drive unit 63 may be omitted. By so doing, it is possible to acquire as much information regarding the lens as possible while further simplifying the configuration. Further, as shown in FIG. 9B, a digital camera provided with a setting acquisition unit 60 </ b> C that supports the imaging device 61 so as to be rotatable in the vertical direction at the tip of a support member 62 </ b> C fixed to the upper part of the housing 11. It may be 20C. That is, the support member 62 does not have to support the imaging device 61 movably on the attachment portion 56 side and the front end side of the lens unit 21. Even in this way, information about as many lenses as possible can be acquired. The rotation of the imaging device 61 may be controlled by a motor or manually by a user. Further, as shown in FIG. 9C, a setting acquisition unit that fixes the imaging device 61 to the tip of the lens unit 21 and transmits the lens image to the image recognition unit 64 by wireless communication or wired communication using a cable (not shown). The digital camera 20D having 60D may be used. Even in this way, information about as many lenses as possible can be acquired.

  Alternatively, as shown in FIG. 10, one end is pivotally supported by the housing 11, and the other end is a free end, and the image pickup apparatus 61 is movable in parallel with the lens unit 21. A digital camera 20E including a setting acquisition unit 60E having a supporting member 62E may be used. Even in this way, information about as many lenses as possible can be acquired.

  In the above-described embodiment, the imaging device 61 is moved by being driven by the drive unit 63, but is not particularly limited thereto, and the drive unit 63 may be omitted. At this time, the user may manually move the imaging device 61. In the above-described embodiment, the drive unit 63 is provided and the support member 62 is extended until the set value is recognized by the image recognition unit 64. However, the present invention is not limited to this.

  In the embodiment described above, the image recognition unit 64 recognizes an index and a number included in the lens image by image recognition, and acquires the number pointed to by the index as a set value. However, the image recognition unit 64 analyzes and sets the lens image. As long as the value is acquired, the present invention is not particularly limited to this. In the embodiment described above, index data is stored in advance as data related to the old lens unit, and each setting value is acquired by collating this with the lens image. Only the shape of the index and the pattern of the character shape may be stored, and the setting value may be acquired only by image recognition without using the index data. In this way, it is possible to deal with lens units that are not grasped by the manufacturer, and it is possible to acquire more information about the lenses.

  In the above-described embodiment, the setting acquisition unit 60 is disposed in the region above the attachment portion 56 on the housing 11 of the digital camera 20, but this is not particularly limited.

  In the embodiment described above, the display screen 80 displaying the information display unit 82 is displayed on the EVF 26, but the display method is not limited to this. For example, the display screen 80 may be displayed on the monitor 28. Further, although the information display unit 82 is overlaid on the display screen 80, the information display unit 82 may be displayed as a mini window. Further, although the set value is displayed as a number on the information display unit 82, as shown in FIG. 11, a display screen 81 provided with an information image display unit 84 for displaying a lens image may be displayed on the EVF 26. Good. Even in this way, it is easy to confirm the F value and the like.

  In the above-described embodiment, the setting value acquired by the setting acquisition unit 60 is displayed and output on the display unit 25 or stored and output to the memory card MC. However, the setting value is particularly limited if the acquired setting value is output. However, either one may be omitted, or a new output such as a print output or an audio output may be added.

  In the above-described embodiment, the routine is started or ended according to the power operation. However, when there is a mode other than shooting such as the shooting mode and the playback mode, the mode is switched between the shooting mode and the mode other than shooting. The routine may be started or ended according to the operation. In addition, it was determined whether the support member should be extended by first taking a picture and recognizing the image. However, the support member is first extended to the length of the previous support member, and then the shooting and image recognition are performed. It may be determined whether or not the support member is expanded and contracted. Further, the setting value acquired by the image recognition is not limited to being output as it is, but a value converted based on the setting value acquired by the image recognition may be indirectly output as the setting value.

  In the embodiment described above, the image recognition unit 64 has a function of acquiring at least one or more of the lens aperture value, the F value, the T value, the distance meter value, and the focal length as set values. However, the acquisition function of one or more of these values may be omitted, or a value other than these may be acquired.

  In the above-described embodiments, the present invention has been applied to the digital camera 20, but may be applied to a digital video camera, a digital camera control method, or this program.

11 Housing, 20, 20B to 20E Digital camera, 21, 21A, 21B Lens unit, 22 Lens group, 23 Aperture mechanism, 24 Setting display section, 25 Display section, 26 EVF, 28 Monitor, 30 Operation section, 32 Power key , 34 Shutter key, 36 Memory card controller, 40 Main controller, 42 CPU, 43 Flash memory, 44 RAM, 45 I / F, 50 Imaging unit, 51 Image sensor, 52 Image generation unit, 54 Viewfinder image imaging unit, 55 Imaging Mechanism, 56 mounting portion, 57 shutter, 60 setting acquisition unit, 61 imaging device, 62 support member, 63 drive portion, 64 image recognition portion, 65 output portion, 70, 71 lens image, 80, 81 display screen, 82 information display Part, 84 Information image display part, 9 0 Image data, 92 shooting information, MC memory card.

Claims (9)

A mounting portion for attaching a lens tube that has a lens and displays a setting value that changes during shooting,
An image acquisition unit that acquires a lens image that is an image of an appearance of a lens cylinder attached to the attachment unit including the setting value;
An information acquisition unit that analyzes the lens image and acquires the setting value;
An output unit for outputting the acquired set value;
A main photographing unit for performing a main photographing with light passing through the lens;
An imaging device with   The imaging apparatus according to claim 1, wherein the information acquisition unit recognizes an index and a number included in the lens image by image recognition, and acquires the number indicated by the index as the set value.   The imaging apparatus according to claim 1, wherein the information acquisition unit acquires at least one or more of an F value, a T value, a distance meter value, and a focal length of the lens as the setting value.   The imaging device according to any one of claims 1 to 3, wherein the image acquisition unit is disposed in a region above the mounting portion on a housing of the imaging device.   The said image acquisition part is provided with the image pick-up element which image | photographs the said lens image, and the position variable part which changes the position of the lens cylinder attached to the said attachment part, and the said image pick-up element relatively. The imaging device of any one of -4.   The said position variable part is provided with the supporting member which supports the said image pick-up element so that a movement between the housing | casing side of the said imaging device and the front end side of the lens cylinder attached to the said attaching part is possible. Shooting device. The position variable unit includes a drive unit that moves the image sensor,
The imaging device according to claim 5 or 6, wherein the driving unit moves the position of the imaging element until the information acquisition unit acquires the set value from the lens image. The imaging device according to any one of claims 1 to 7,
A display unit for displaying an image,
The output device outputs the acquired set value to the display unit. It is an imaging device of any one of Claims 1-8,
A storage unit for storing the image data of the main shooting,
The output unit is an image capturing apparatus that associates the image data with the actual image data and outputs the acquired setting value to the storage unit.

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