JP2017118213A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus that makes it possible to eliminate displacement of a subject image in still-image photographing, while performing still-image photographing through refocus consecutive photographing during moving-image photographing.SOLUTION: An imaging apparatus comprises: a photographic lens unit 2; a semi-transmission mirror 3 movable in the direction of a photographing optical path; first imaging means 4 that receives a flux of light transmitted through the semi-transmission mirror 3; and second imaging means 5 that receives a flux of light reflected by the semi-transmission mirror 3. The imaging apparatus is capable of a series of static-image consecutive photographing by the second imaging means 5 simultaneously during moving-image photographing by the first imaging means 4. In a series of static-image consecutive photographing during moving-image photographing, the semi-transmission mirror 3 is gradually moved for each static image photographing in the direction of photographing optical axis, thereby photographing such that a focusing position corresponding to the second imaging means 5 is gradually moved for each static image photographing. A photographing area common to all static images obtained by a series of static image consecutive photographing is calculated, and each static image of the series of static image consecutive photographing in the common photographing area is cropped.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an imaging apparatus that can capture still images and moving images.

  In an imaging device such as a digital camera that captures a subject image by converting it into an electrical signal, the imaging light beam is received by the imaging device, a photoelectric conversion signal output from the imaging device is converted into image data, and a memory card, etc. Record on a recording medium. As the image sensor, a CCD (Charge Coupled Device), a CMOS sensor (Complementary Metal Oxide Semiconductor), or the like is used.

  Although it is possible to shoot still images and moving images using one image sensor, if you want to obtain both images at the same time, the difference in pixel readout processing and the optimal shooting conditions differ, so still image shooting During that time, it was necessary to temporarily interrupt the video.

  In order to solve the problem, as proposed in Patent Document 1, the first imaging unit and the second imaging unit are provided, and the first imaging unit captures a still image, and the second imaging unit captures a moving image. There is a technique to do. In addition, as proposed in Patent Document 2, there is a method in which a rotatable mirror is arranged on the photographing optical axis, and separate image pickup devices are arranged behind and above the mirror. The combination of Patent Document 1 and Patent Document 2 can seamlessly shoot moving images and still images. Further, Patent Document 2 describes that the in-focus position of the image sensor disposed above the mirror is changed by moving the mirror in the direction of the photographic optical axis and changing the optical path length. Therefore, with the combination described above, it is possible to shoot moving images and still images at different in-focus positions.

JP 2012-231197 A JP 2005-99608 A

  However, in the prior art disclosed in the above-mentioned patent document, when the mirror is moved in the direction of the photographing optical axis, the subject image captured by the image sensor disposed above the mirror moves in accordance with the movement of the mirror. End up. For example, if the mirror is moved rearward in the photographing optical axis direction, the subject image to be picked up moves downward. Furthermore, when the continuous shooting is performed by moving the mirror little by little and changing the focus position of the image sensor arranged above the mirror little by little (hereinafter referred to as refocus continuous shooting), the subject image is gradually changed. There is a possibility that the image is taken at a different position and the composition is not intended by the photographer. Also, when performing image processing such as synthesis of refocused continuous shot images, if the subject is at a different position, an extra step is added to the processing, which increases the processing time.

  Therefore, an object of the present invention is to eliminate the positional deviation of the subject image of still image shooting while performing still image shooting by refocus continuous shooting without affecting the focus position of the moving image during movie shooting. An object of the present invention is to provide an imaging device that can be made possible.

In order to achieve the above object, an imaging apparatus according to the present invention includes:
Interchangeable photographic lens unit (2) and part of the light beam incident from the photographic lens unit (2) are transmitted, and the remaining light beam is reflected to divide the light beam. A semi-transmissive mirror (3), a first imaging means (4) for receiving the light beam transmitted through the semi-transmissive mirror (3), and a second imaging means for receiving the light beam reflected by the semi-transmissive mirror (3) ( 5) and an imaging device comprising:
The imaging apparatus can simultaneously perform a series of still image continuous shooting by the second imaging means (5) during moving image shooting by the first imaging means (4),
A series of still image continuous shooting performed during moving image shooting is performed by moving the translucent mirror (3) gradually in the direction of the shooting optical axis for each still image shooting up to the second imaging means (5). The optical path length is gradually changed for each still image shooting, and the focusing position with respect to the second imaging means (5) is gradually changed for each still image shooting,
A shooting region common to all still images obtained by a series of still image continuous shootings is calculated, and each still image of a series of still image continuous shootings is cropped in the common shooting region.

  According to the present invention, during moving image shooting, it is possible to eliminate the positional deviation of the subject image of still image shooting while performing still image shooting by continuous refocus without affecting the focus position of the moving image. An image pickup apparatus can be provided.

It is a block diagram which shows the principal part electric circuit structure of the imaging device in this embodiment. It is sectional drawing in the imaging | photography optical axis of the imaging device in this embodiment. It is the flowchart which showed the operation | movement of the camera 1 in this embodiment. It is a screen display on the display device 13 in the still image shooting mode in the present embodiment. It is a screen display on the display device 13 in the moving image shooting mode in the present embodiment. It is a screen display on the display device 13 in the still image / moving image simultaneous shooting mode in the present embodiment. It is a screen display on the display device 13 when still image refocus continuous shooting is set in the present embodiment. It is a screen display on the display device 13 at the time of simultaneous shooting of still images / moving images in the present embodiment. 5 is a flowchart illustrating an operation of still image refocus continuous shooting in the present embodiment. It is the picked-up image which continuously image | photographed with the 2nd imaging means 5, moving the transflective mirror 3 along the imaging | photography optical axis to the front side. FIG. 10 is a photographed image obtained by cropping FIG. 10 in the photographing common area. It is a screen display on the display device 13 at the time of simultaneous shooting of still images / moving images in the present embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Moreover, the same code | symbol is attached | subjected to the common part in each drawing.

  First, the main configuration of the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram illustrating a configuration of an electric circuit of a main part of the imaging apparatus according to the present embodiment. FIG. 2 is a sectional view taken along the photographing optical axis of the image pickup apparatus according to the present embodiment.

  A detachable lens unit 2 is attached to the camera 1. The lens unit includes a focus lens 30 and a lens driving unit 31 for driving the focus lens 30. The light incident from the lens unit 2 is incident on the semi-transmissive mirror 3 disposed at 45 ° with respect to the photographing optical axis AA. The semi-transmission mirror 3 is configured to be movable in parallel with the photographing optical axis AA direction by a lead screw or the like (not shown). Part of the light incident on the semi-transmissive mirror 3 is configured to pass through the semi-transmissive mirror 3 and form an image on the first imaging means 4 inside the camera 1. The remaining light incident on the semi-transmissive mirror 3 is reflected by the semi-transmissive mirror 3 and forms an image on the second imaging means 5. Here, the first image pickup means 4 and the second image pickup means 5 are constituted by, for example, a CCD, a CMOS, or the like.

  The first imaging means 4 has a focus detection sensor 22 built therein. The focus detection sensor 22 performs phase difference type focus detection. A signal output from the focus detection sensor 22 is supplied to the focus drive circuit 23, converted into a subject image signal, and then transmitted to the camera circuit control microcomputer 15. Then, the camera circuit control microcomputer 15 performs focus detection calculation by the phase difference detection method based on the subject image signal. Specifically, the camera circuit control microcomputer 15 calculates the defocus amount and direction using the subject image signal, and the lens via the lens control circuit 19 and the lens drive circuit 31 according to the calculated defocus amount and direction. The focus lens 30 in the unit 2 is driven to the in-focus position. In the present embodiment, the phase difference detection type focus detection sensor arranged in the first imaging unit 4 is described, but other arrangements and other methods may be used. For example, a known phase difference type focus detection unit may be arranged independently, or a known contrast type focus detection by the first imaging unit 4 may be used.

  When the semi-transmissive mirror 3 is normally in the standby position, the optical path length from the lens unit 2 to the first imaging means 4 through the semi-transmissive mirror 3 and the second imaging means 5 reflected from the lens unit 2 by the semi-transmissive mirror 3 are reflected. The optical path length up to is substantially equivalent. Further, by moving the semi-transmissive mirror 3 in the direction of the photographing optical axis AA, the optical path length of the second image pickup unit 5 is changed, and the in-focus position of the second image pickup unit 5 is set to the focus of the first image pickup unit 4. Can be different from the position.

  The first image pickup means 4 is driven / controlled by the first image pickup means drive / control circuit 6, and the analog signal output from the first image pickup means 4 is converted into a digital signal by the first A / D conversion circuit 7. The second imaging means 5 is driven / controlled by the second imaging means drive / control circuit 8, and the analog signal output from the second imaging means 5 is converted to a digital signal by the second A / D conversion circuit 9.

  The digital signals output from the first A / D conversion circuit 7 and the second A / D conversion circuit 9 are processed by the image processing circuit 10 and are generated as image data. The image data is stored in the buffer memory 11 or displayed on the display device 13 and the in-finder display device 50 which are configured by liquid crystal or the like by the display member driving circuit 12. The display device 13 and the in-finder display device 50 can display various information such as a shooting mode, a lens aperture value, a shutter speed value, and ISO sensitivity.

  The eyepiece 51 can enlarge and observe image data and various information displayed on the in-viewfinder display device 50.

  The camera 1 has a digital circuit control microcomputer 14 and a camera circuit control microcomputer 15. The digital circuit control microcomputer 14 communicates and exchanges data with the image processing circuit 10 and the display member drive circuit 12 via the CPU bus, and performs overall control thereof. The camera circuit control microcomputer 15 comprehensively performs various calculation processes of the mirror drive circuit 17 that detects the state of the operation member 16 such as a switch and a button and drives the semi-transmissive mirror 3. In addition, the camera circuit control microcomputer 15 has an in-camera setting storage unit composed of an EEPROM 18, and various setting values of the camera 1 are recorded therein. The camera circuit control microcomputer 15 communicates with the lens control circuit 19 in the lens unit 2 via the mount contact 20. The mount contact 20 also has a function of transmitting a signal to the camera circuit control microcomputer 15 when the lens unit 2 is connected. In-lens memory 21 in the lens unit 2 stores lens specific information, and includes information on the focal length, angle of view, and aperture amount of the lens. The digital circuit control microcomputer 14 and the camera circuit control microcomputer 15 communicate with each other and control the entire camera 1 in cooperation.

  The switch sense circuit 16 transmits an input signal to the camera circuit control microcomputer 15 in accordance with the operation state of each switch. A release button 24 is disposed on the camera 1. The switch SW1 (24a) is turned on by the first stroke (half press) of the release button 24. The switch SW2 (24b) is turned on by the second stroke (full press) of the release button 24. When the switch SW2 (24b) is turned on, an instruction to start photographing is transmitted to the camera circuit control microcomputer 15. A shooting mode setting dial 26, a main switch 27, a moving image distance measuring button 28, and a moving image start / end button 29 are connected to the switch sense circuit 16. The shooting mode setting dial 26 is a dial that can set various shooting modes of the camera 1. The main switch 27 is a switch for switching the power of the camera 1 ON and OFF. The moving image distance measurement button 28 is a button for instructing start of distance measurement at the time of moving image shooting. The moving image start / end button 29 is a button for starting moving image shooting when pressed in a moving image shooting standby state and ending moving image shooting when pressed during moving image shooting.

  The above is the outline of the electric circuit configuration of the main part of the camera 1 in the present embodiment.

  Next, a basic operation of the camera 1 in the present embodiment will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the camera 1 in this embodiment.

  First, in S100, the user selects the shooting mode by operating the shooting mode setting dial 26.

[Still image shooting mode]
If the still image shooting mode is selected in S100, the process proceeds to S101 and enters a still image shooting standby state. In the still image shooting mode, still image shooting is performed by the first imaging unit 4.

  FIG. 4 shows a screen display on the display device 13 in the still image shooting mode.

  As shown in FIG. 4, a through image of the first imaging unit 4 is displayed on the display device 13 and the in-finder display device 50. When the release button 24 is half-pressed, the process proceeds to S102, and the focus lens 30 is driven based on the information of the focus detection sensor 22, and the focusing operation to the distance measuring frame 40 is performed. When the release button 24 is fully pressed, the process proceeds to S103, and the first imaging unit 4 performs still image shooting. In step S104, the camera circuit control microcomputer 15 determines whether the main switch 27 is powered on or off. If the power is on, the process returns to S101, and if the power is off, the process ends.

[Movie shooting mode]
Next, when the moving image shooting mode is selected in S100, the process proceeds to S105 to enter a moving image shooting standby state. In the moving image shooting mode, moving image shooting is performed by the first imaging unit 4.

  FIG. 5 shows a screen display on the display device 13 in the moving image shooting mode.

  As shown in FIG. 5, a through image of the first imaging unit 4 is displayed on the display device 13 and the in-finder display device 50. When an in-focus instruction is issued by pressing the moving image distance measuring button, the process proceeds to S106, and the focus lens 30 is driven based on information from the focus detection sensor 22 to perform an in-focus operation on the distance measuring frame 41. Subsequent focusing instructions may be a user operation, or may be automatic tracking by the camera itself for the subject selected in the distance measuring frame 41. Then, when the start of moving image shooting is selected by pressing the moving image start / end button, the process proceeds to S107, where the first imaging unit 4 performs moving image shooting. When the moving image shooting is terminated by pressing the moving image start / end button in S108, the camera circuit control microcomputer 15 determines whether the main switch 27 is turned on or off in S109. If the power is on, the process returns to S105, and if the power is off, the process ends.

[Still image / video simultaneous shooting mode]
Next, when the still image / moving image simultaneous shooting mode is selected in S100, the process proceeds to S110 to enter a moving image shooting standby state. In the still image / moving image simultaneous shooting mode, the first image pickup unit 4 performs moving image shooting, and the second image pickup unit 5 performs still image shooting.

  FIG. 6 shows a screen display on the display device 13 in the still image / moving image simultaneous shooting mode.

  As shown in FIG. 6, a through image of the first imaging unit 4 is displayed on the display device 13 and the in-finder display device 50.

  In S111, the user selects whether to perform still image refocus continuous shooting during moving image shooting. When still image refocus continuous shooting is performed, the process proceeds to S112, and the refocus area and the number of continuous shots are determined. An example of a specific operation is shown in FIG.

  FIG. 7 shows a screen display on the display device 13 when the still image refocus continuous shooting is set.

  As shown in FIG. 7, the first distance measurement frame 42a and the second distance measurement frame 42b are selected. The frame display of the first distance measuring frame 42a and the second distance measuring frame 42b may be different from the single frame or double frame so that the user can see and distinguish them. May be allowed. Based on the information of the focus detection sensor 22, the defocus amount to the subject selected in the first distance measurement frame 42a and the second distance measurement frame 42b is known. Based on the information, the camera circuit control microcomputer 15 determines the position of the semi-transmissive mirror 3 that is focused on the first distance measuring frame 42a (position a3 in FIG. 2) and the semi-transmissive mirror that is focused on the second distance measuring frame 42b. 3 position (position a2 in FIG. 2) is calculated. Thereby, the distance (distance L in FIG. 2) to which the semi-transmissive mirror 3 should be moved is obtained.

  Next, as illustrated in FIG. 7, the operation unit is operated to set the number n of continuous shots (the value in the number determination frame 43). FIG. 7 shows a case where the number of shots n = 3. Thereby, the camera circuit control microcomputer 15 calculates the position so that the semi-transmissive mirror 3 moves evenly for each continuous shot. The first continuous shot is the initial position (the position of the semi-transmissive mirror 3 that is in focus in the first distance measuring frame 42a), the second continuous shot is the position moved L / (n-1) from the initial position, and the continuous shot. The third sheet is a position moved by 2 × L / (n−1) with respect to the initial stage. The n-th continuous shot is at a position (n−1) × L / (n−1), that is, moved L from the initial stage. In the case of n = 3, as shown in FIG. 2, the position of the semi-transmissive mirror 3 is a position a3 for the first continuous shot and a position moved by L / 2 with respect to the initial position for the second continuous shot (position a1). The third continuous shot is the position (position a2) moved L with respect to the initial stage. Here, since the subject distance in the first distance measuring frame 42a is closer than the subject distance in the second distance measuring frame 42b, the semi-transmissive mirror 3 moves forward on the photographing optical axis (first imaging means 4). From the side to the lens unit 2 side).

  Thereafter, when a focusing instruction is issued by pressing the moving image ranging button, the process proceeds to S113, and the focus lens 30 is driven based on the information of the focus detection sensor 22, and the focusing operation to the ranging frame 44 is performed. Subsequent focusing instructions may be user operation, or may be automatic tracking by the camera itself for the subject selected in the distance measuring frame 44. Then, when the start of moving image shooting is selected by pressing the moving image start / end button, the process proceeds to S114, and moving image shooting by the first imaging unit 4 is started.

  Thereafter, when the user performs a half-press operation of the release button 24, the process proceeds to S115, and the screen is switched to a still image / moving image simultaneous shooting screen. FIG. 8 shows a state of a still image / moving image simultaneous shooting screen displayed on the display device 13. As shown in FIG. 8, the first imaging means distance measuring frame 44 indicating the moving image focusing position of the first imaging means 4, and the second focusing position of the first refocus continuous shooting of the second imaging means 5. An imaging means distance measurement frame 45a and a second imaging means distance measurement frame 45b indicating the focus position at the end of refocus continuous shooting are displayed. However, the second imaging unit distance measurement frames 45a and 45b show only the position where the second imaging unit 5 is focused, and the displayed subject may not be in focus on the through image display. .

  Then, when the release button 24 is fully pressed in S115, the process proceeds to S116, and still image refocus continuous shooting is performed by the second imaging unit 5. FIG. 9 shows a flowchart of still image refocus continuous shooting operation in the present embodiment. As described above, n is the set number of refocus continuous shots and L is the total amount of movement of the semi-transmissive mirror 3 over the calculated total number of refocus continuous shots.

  FIG. 10 shows a photographed image obtained by performing continuous photographing with the second imaging means 5 while moving the semi-transmissive mirror 3 forward along the photographing optical axis. FIG. 10A shows the first photographed image, FIG. 10B shows the second photographed image, and FIG. 10C shows the third photographed image. A solid line frame 46 in the figure is a shooting angle of view, and a dotted line frame 47 is a first shooting angle of view, which is virtually superimposed on the second and third shot images.

  In general, as shown in FIG. 10, when the transflective mirror 3 is moved forward along the photographing optical axis, the captured subject image moves upward, and the first and last refocus continuous shooting is performed. The angle of view is different when comparing still images.

  Therefore, the camera circuit control microcomputer 15 calculates the photographing common area based on the position of the first transflective mirror 3 for the refocus continuous shooting and the position of the semitransparent mirror 3 at the end of the refocus continuous shooting. Then, the continuous shooting is cropped one by one in the calculated shooting common area. By doing so, the angle of view of each continuous shot can be made the same. FIG. 11 shows an example thereof, which is a captured image that is cropped in a common area for the first image of FIG. 10A and the third image of FIG. 10C.

  Returning to the flowchart, the description will be continued. First, the crop area described above is calculated in S130. Next, in S131, the semi-transmissive mirror 3 is moved in parallel to the photographing optical axis from the normal standby position to the initial position of the first refocus continuous shooting. The initial position of the semi-transmissive mirror 3 is calculated by the camera circuit control microcomputer 15 as described above. In step S132, the first still image for refocus continuous shooting is taken. The photographed image is cropped in the photographing common area as described above. In step S133, the transflective mirror 3 is moved in parallel with the photographing optical axis by a distance L / (n-1) from the initial position of the first refocus continuous shot. The movement amount L / (n−1) of the semi-transmissive mirror 3 is calculated by the camera circuit control microcomputer 15 as described above. In step S134, the second still image for the refocus continuous shooting is taken. The photographed image is cropped in the photographing common area as described above. Thereafter, the same processing continues for the refocus continuous shooting set number of sheets. In S135, the transflective mirror 3 is moved in parallel with the imaging optical axis by a distance of (n−1) × L / (n−1) = L from the initial position of the first refocus continuous shooting. In step S136, the refocus continuous nth still image is shot. The photographed image is cropped in the photographing common area as described above. When the set number of continuous shooting processes are completed, the semi-transmissive mirror 3 is returned to the normal standby position before the refocus continuous shooting is performed in S137.

  Returning to the flowchart of FIG. When S116 ends, the process proceeds to S117, and it is determined whether or not the moving image shooting is ended. If the moving image shooting is completed, the process proceeds to S118. If the moving image shooting is being continued, the process returns to S115. In S118, the camera circuit control microcomputer 15 determines whether the main switch 27 is turned on or off. If the power is on, the process returns to S110, and if the power is off, the process ends.

  On the other hand, if it is selected in S111 that still image refocus continuous shooting during moving image shooting is not performed, normal still image shooting can be performed during moving image shooting. After that, when a focus instruction is issued by pressing the moving image ranging button, the process proceeds to S120, the focus lens 30 is driven based on the information of the focus detection sensor 22, and the focusing operation to the distance measuring frame 44 is performed. Subsequent focusing instructions may be user operation, or may be automatic tracking by the camera itself for the subject selected in the distance measuring frame 44. Then, when the start of moving image shooting is selected by pressing the moving image start / end button, the process proceeds to S121, and moving image shooting by the first imaging unit 4 is started.

  Thereafter, when the user performs a half-press operation of the release button 24, the process proceeds to S122, and the screen is switched to a still image / moving image simultaneous shooting screen.

  FIG. 12 shows a state of the still image / moving image simultaneous shooting screen displayed on the display device 13.

  As shown in FIG. 12, the first imaging means distance measurement frame 44 showing the moving image focusing position of the first imaging means 4 and the second imaging means distance measurement frame showing the still image focusing position of the second imaging means 5. 48 is displayed. However, the second image pickup unit distance measurement frame 48 shows only the position where the second image pickup unit 5 is focused, and the displayed subject may not be in focus on the through image display.

  Subsequently, in S123, based on the information of the focus detection sensor 22, without driving the focus lens 30, only the semi-transmission mirror 3 is moved in parallel with the photographing optical axis, and the optical path length is changed, thereby measuring. A focusing operation on the distance frame 48 is performed. When the release button 24 is fully pressed, the process proceeds to S124, and the second image pickup unit 5 performs still image shooting. At this time, the still image of the second imaging unit 5 differs from the moving image of the first imaging unit 4 in the subject position, that is, the angle of view due to the influence of the movement of the semi-transmissive mirror 3. Therefore, a process of cropping a still image and deleting an area not shown in the moving image may be performed.

  Thereafter, the process proceeds to S125, and it is determined whether or not the moving image shooting is finished. If the moving image shooting is completed, the process proceeds to S126. If the moving image shooting is being continued, the process returns to S122. In S126, the camera circuit control microcomputer 15 determines whether the main switch 27 is powered on or off. If the power is on, the process returns to S110, and if the power is off, the process ends.

  As described above, during moving image shooting, it is possible to eliminate the positional deviation of the subject image of still image shooting while performing still image shooting by continuous refocus without affecting the focus position of the moving image.

  In addition, there is a method of continuously driving the focus lens in accordance with the movement of the subject at the time of moving image shooting and continuing to focus on the moving subject (moving image AF). During the moving image servo AF, it is more preferable to determine the moving direction of the semi-transmissive mirror 3 at the time of still image refocus continuous shooting in accordance with the focus position change direction by driving the focus lens. For example, when the in-focus position of the moving image changes from the front to the back, the semi-transmissive mirror 3 is also moved so that the in-focus position changes from the front to the back. In other words, the semi-transmissive mirror 3 is moved forward on the photographing optical axis (from the first imaging means 4 side toward the lens unit 2 side).

  In this way, L, which is the total movement amount of the semi-transmissive mirror 3 over the total number of refocus continuous shots, can be reduced. Therefore, the first and last subject shift amount (angle of view angle shift) in the refocus continuous shooting can be reduced, and the shooting common area in the total number of continuous shots can be expanded, and as a result, the crop area can be expanded. A minimum crop area and a captured image with a wide angle of view can be obtained, which leads to user merit.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

1 camera, 2 lens unit, 3 transflective mirror, 4 first imaging means,
5 second imaging means, 15 camera circuit control microcomputer, 22 focus detection sensor,
30 Focus lens

Claims (2)

An interchangeable photographic lens unit (2);
A translucent mirror (3) movable in the direction of the photographic optical axis, which transmits a part of the light beam incident from the photographing lens unit (2) and divides the light beam by reflecting the remaining light beam;
First imaging means (4) for receiving a light beam transmitted through the semi-transmissive mirror (3);
Second imaging means (5) for receiving the light beam reflected by the semi-transmissive mirror (3);
An imaging device having
The imaging apparatus can simultaneously perform a series of still image continuous shooting by the second imaging means (5) during moving image shooting by the first imaging means (4),
A series of still image continuous shooting performed during moving image shooting is performed by moving the translucent mirror (3) gradually in the direction of the shooting optical axis for each still image shooting up to the second imaging means (5). The optical path length is gradually changed for each still image shooting, and the focusing position with respect to the second imaging means (5) is gradually changed for each still image shooting,
An imaging apparatus that calculates a shooting area common to all still images obtained by a series of still image continuous shooting, and crops each still image of the series of still image continuous shooting in the common shooting area. Focus detection means (22) for performing focus detection of the first imaging means (4);
A focus lens (30) disposed in the replaceable photographic lens unit (2) and moving to a focus position based on a signal from the focus detection means (22);
Further comprising
In moving image shooting by the first imaging means (4), when moving image subject tracking shooting is performed in which the focus lens (30) is continuously moved in accordance with the movement of the subject and the subject is focused.
In-focus position change direction due to movement of the focus lens (30),
While making the direction of focus position change by moving the transflective mirror (3) in the direction of the photographic optical axis the same,
The imaging apparatus according to claim 1, wherein a series of still image continuous shooting is performed by the second imaging means (5).