JP2015119299A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of simply performing rotation panning photographing.SOLUTION: Disclosed is an imaging apparatus having an optical system for forming the image of a subject and an imaging element for converting a subject image to be formed into an image signal. This apparatus includes: a drive part 6 which moves the imaging element so as to change a position of the subject image to be formed; a camera work detection part 54 which detects the photographer's specific operation on the imaging apparatus; and a drive control part 53 which, when the specific operation is detected by the camera work detection part, controls the drive part so as to rotate the imaging element for rotation panning photographing around an optical axis of the optical system in the center.

Description

  The present invention relates to an imaging apparatus that performs image capturing with an optical special effect.

  There is a shooting technique called panning as one of the shooting techniques. This obtains an effect of making a main subject stand out by flowing the background of the subject. In the panning shooting, a shooting technique called rotating panning is known in which shooting is performed while rotating the camera with respect to the optical axis. According to this rotational panning shooting, the captured image hardly flows in the central portion, and flows in an arc-shaped locus that is larger in the peripheral portion, so that there is an effect of making the subject in the central portion stand out. In addition, as for panning shot shooting, a shooting technique called inter-exposure zoom is known in which the trajectory radially changes by changing the angle of view during exposure.

  Conventionally, high-level techniques have been required for these shooting techniques, but recently, a camera that easily performs these shootings using a camera shake correction mechanism has been proposed. For example, by detecting the motion vector of the subject and controlling the position of the CCD based on the motion vector using camera shake correction by the CCD shift method, a quality panning shot image without blurring of the main subject can be reliably obtained. A camera that enables this is proposed (Patent Document 1).

JP 2010-193324 A

  There are various difficulties in shooting techniques that express the effects of rotating systems. For example, although the rotation speed and exposure time for rotating the camera with respect to the optical axis are important, it may be difficult to match the rotation operation of the camera and the release timing, and the targeted effect may not be obtained. In addition, there is a problem that, when rotating the camera, if the rotation axis is shaken, the shooting fails.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an imaging apparatus that can easily perform rotary panning shooting.

  To achieve the above object, an image pickup apparatus having an optical system for forming an image of an object and an image sensor for converting the image of the object to be formed into an image signal is configured to change the position of the image of the object to be formed. When the specific operation is detected by the drive unit that moves the image sensor, the camera work detection unit that detects a specific operation of the photographer with respect to the imaging device, and the camera work detection unit, the rotary panning shooting is performed. And a drive control unit that controls the drive unit to rotate the image pickup device around an optical axis centered on the optical axis of the optical system.

  ADVANTAGE OF THE INVENTION According to this invention, the imaging device which can simplify rotation panning imaging | photography can be provided.

It is a whole block diagram which shows an example of an imaging device. It is a functional block diagram in connection with rotational shake correction of a shake control microcomputer. It is a figure which shows an example of the rotation panning imaging | photography image in 1st Embodiment. It is a figure explaining the image movement of the to-be-photographed object in 1st Embodiment. It is a functional block diagram of the shake control microcomputer in a 1st embodiment. It is a figure which shows the relationship between the exposure time in 1st Embodiment, rotation amount, etc. FIG. It is a flowchart which shows the procedure of the rotation correction process in 1st Embodiment. It is a flowchart which shows the procedure of the rotation correction process by the modification of 1st Embodiment. It is an example of the image image | photographed by the zoom & rotation imaging | photography mode in 2nd Embodiment. It is a functional block diagram of the blur control microcomputer in 2nd Embodiment. It is a figure explaining the image movement by zoom-out operation during exposure. It is a figure explaining the image movement by zoom-in operation during exposure. It is a figure which shows the relationship between a focal distance and a field angle. It is a figure which shows an example of the relationship between a field angle and correction | amendment rotation amount in 2nd Embodiment. It is a figure which shows the image movement by which the image movement by the zoom and rotation in 2nd Embodiment was synthesize | combined. It is a flowchart which shows the procedure of the rotation correction process in 2nd Embodiment. It is a whole block diagram which shows the structural example of the imaging device in 3rd Embodiment. It is a functional block diagram of the shake control microcomputer at the time of based on 1st Embodiment in 3rd Embodiment. It is the figure which compared the normal correction range and extended correction range in 3rd Embodiment. It is a flowchart which shows the procedure of the rotation correction process in 3rd Embodiment. It is a functional block diagram of the shake control microcomputer at the time of based on 2nd Embodiment in 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall block diagram illustrating an example of an imaging apparatus 100 according to the present embodiment. An imaging apparatus 100 according to this embodiment includes a camera body 1, an optical system 2, an encoder 3, a shutter 4, an imaging device 5, a drive unit 6, a system controller 7, a shake control microcomputer 8, an angular velocity sensor 9, and a magnification operation unit 10. , A release switch (SW) 11, an EVF 12, and a memory card 13.

  The camera body 1 constitutes a housing of the imaging apparatus 100 by protecting each part such as the optical system 2 inside. The system controller 7 comprehensively controls each part in the camera body 1. The system controller 7 has a CPU and a control program, and executes control of each unit in the camera body 1 by processing of the CPU that has read the control program.

  The optical system 2 forms a subject image on the imaging surface of the imaging element 5. The optical system 2 includes a variable magnification optical unit 2a and a focusing optical unit (not shown). The focusing optical unit adjusts the focusing position of the subject image formed on the image sensor 5. The variable magnification optical unit 2a is moved in the optical axis direction by a drive mechanism (not shown) in the optical system 2 to change the focal length. Due to the change in the focal length, the angle of view of the subject image formed on the imaging surface of the image sensor 5 changes.

  The encoder 3 detects the position of the zoom optical unit 2a in the optical axis direction and notifies the system controller 7 of the detected position information. The zooming operation unit 10 is an operation member that instructs the photographer to move the zooming optical unit 2a. The zoom operation unit 10 is, for example, a zoom ring. When the photographer operates the zoom operation unit 10, for example, a cam mechanism connected to the zoom operation unit 10 is operated, and each lens of the zoom optical unit 2 a moves forward or backward to a predetermined position in the optical axis direction. . The zoom operation unit 10 may be of a zoom switch type, and the zoom optical unit 2a may be operated by an actuator such as a motor when the zoom switch is pressed.

  The shutter 4 is arranged in the vicinity of an imaging surface of an imaging device 5 described later, and switches the imaging surface of the imaging device 5 between an exposed state and a light-shielded state based on an instruction from the system controller 7. For example, the shutter 4 is a focal plane shutter.

  The image sensor 5 photoelectrically converts a subject image formed on the imaging surface into an electric signal. The drive unit 6 is a moving mechanism of the image sensor that supports the image sensor 5 and moves the image sensor 5 on the imaging surface in the vertical, horizontal, and rotational directions. The drive unit 6 moves the image sensor 5 so as to correct the detected camera shake at the time of camera shake correction. Further, at the time of rotational panning shooting, the drive unit 6 rotates the image pickup device 5 with the optical axis direction as the rotation axis to give a rotation effect to the image. Details of the rotary panning shooting will be described later.

  The shake control microcomputer 8 calculates a movement amount for driving the drive unit 6 based on the detection result of the angular velocity sensor 9, and drives the drive unit 6 based on the calculation output. The angular velocity sensor 9 detects a rotational motion that occurs in the camera body 1. In the present embodiment, the angular velocity sensor 9 detects a rotational motion (hereinafter also abbreviated as rotation around the optical axis) with the optical axis direction as the rotational axis.

  The release switch (SW) 11 transmits an information signal for starting a photographing operation of the photographer to the system controller 7. The release switch 11 may be a push button switch disposed on the camera body 1 or a method in which the photographer touches the surface of the EVF 12 (so-called touch panel input) based on the video output indicated by the EVF 12. In the following description, the release switch 11 is described as a two-stage format of 1st and 2nd, but is not limited thereto.

  An EVF (Electronic View Finder) 12 is a display element that displays video data read from the image sensor 5, shooting conditions, operation instructions to the user, and the like. As an example, a liquid crystal display device, an organic EL display element, and the like Is used. The memory card 13 records the image data read from the image sensor 5 and converted by the system controller 7.

  Next, a flow of processing when an image is captured by the imaging apparatus 100 will be briefly described. First, the subject image formed through the optical system 2 is converted into an electric signal by the image sensor 5, and the system controller 7 reads the electric signal accumulated in the image sensor 5 as video data and displays it on the EVF 12. .

  The photographer first captures the subject in the image while confirming the image data output to the EVF 12 with the eyes of the photographer. Then, a desired framing is determined for the target captured image while operating the scaling operation unit 10.

  When the photographer depresses the release switch 11 and performs a photographing operation, the system controller 7 controls the shutter 4 to be in a light-shielded state, and discharges the charge of the image sensor 5 to prepare for still image photographing. Thereafter, the system controller 7 controls the shutter 4 to the open state, exposes the imaging surface of the imaging device 5 and starts imaging.

  At the time of camera shake correction, information accompanying the imaging start operation is also transmitted from the system controller 7 to the shake control microcomputer 8. Based on the angular velocity output detected by the angular velocity sensor 9, the blur control microcomputer 8 integrates the angle change from the start of imaging and drives and controls the drive unit 6 so as to rotate the imaging element 5 in a direction to cancel the angle change. To do. When the camera shake correction is effective, the image pickup device 5 is rotated in a direction to cancel the rotational shake that occurs during the exposure of the camera body 1 with the optical axis as the rotation axis. An image is obtained.

  FIG. 2 is a basic functional block diagram of the shake control microcomputer 8 related to rotational shake correction. Based on FIG. 2, the operation of rotational blur correction will be described. The shake control microcomputer 8 includes a roll rotation amount calculation unit 41, a movement amount calculation unit 42, and a drive control unit 43. The shake control microcomputer 8 has a CPU (not shown) and a control program, and the shake correction process is executed by the CPU that has read the control program. Here, each process of shake correction executed by the CPU of the shake control microcomputer 8 is expressed as a function unit as a roll rotation amount calculation unit 41, a movement amount calculation unit 42, and a drive control unit 43.

  The angular velocity around the optical axis detected by the angular velocity sensor 9 is output to the shake control microcomputer 8. The roll rotation amount calculation unit 41 calculates the rotation amount (angle) of the camera body 1 during a predetermined period based on the angular velocity detected by the angular velocity sensor 9. This amount of rotation is normally the amount of rotation of the camera body 1 per predetermined time from the start to the end of imaging, and is obtained by time-integrating the angular velocity acquired by the angular velocity sensor 9.

  Next, the movement amount calculation unit 42 calculates the movement amount instructed to the drive unit 6 based on the rotation amount obtained by the roll rotation amount calculation unit 41. Specifically, the movement amount calculation unit 42 has the same rotation amount as the rotation amount obtained by the roll rotation amount calculation unit 41 so that the movement amount and the rotation amount are opposite to the detected rotation direction. Calculate the direction. The drive control unit 43 controls the drive unit 6 by instructing the drive unit 6 of the calculated movement amount / rotation direction. The drive unit 6 rotates the image sensor 5 according to the calculated movement amount / rotation direction under the control of the drive control unit 43. The image sensor 5 is rotated so as to cancel the rotation applied to the camera body 1.

  Then, after a predetermined exposure time has elapsed, the system controller 7 sets the shutter 4 in a light-shielded state and ends imaging. After the photographing is completed, the electric charge accumulated in the image sensor 5 is read as a video signal, converted into a recording format, and recorded as image data in the memory card 13. Further, the focal length information of the variable magnification optical unit 2a is acquired from the position detection signal from the encoder 3, and is recorded together with the image as tag information (for example, Exif (registered trademark) information) related to shooting information in the image data. The above is the flow of a series of processes related to normal shooting.

<First Embodiment>
A first embodiment of rotary panning shooting will be described. FIG. 3 is an example of an image photographed by rotating panning photographing. This is an image taken with the screen center O as the rotation center and rotated by θ degrees counterclockwise during exposure.

  FIG. 4 is a diagram illustrating image movement of a subject in rotary panning shooting. FIG. 4A is a diagram illustrating that the magnitude of the image movement amount changes according to the distance from the screen center O. When the image is rotated counterclockwise by the rotation amount θ during exposure, the image movement at point A located at a distance R1 from the screen center O is P1. Similarly, the image movement of point B located at a distance R2 from the screen center O is P2. Both P1 and P2 are arcs centered on the screen center 0. Further, as the radius R increases, the amount of image movement increases (P1 <P2).

  FIG. 4B is a diagram showing a change in the image movement of the subject depending on the position of the screen in rotary panning shooting. An image in the vicinity of the screen center O is formed with little image movement. As the distance from the screen center O increases, the image movement amount increases as the distance from the screen center O increases. That is, the captured image near the center O of the screen is emphasized with respect to the periphery because the amount of rotation is small compared to the periphery and the image is clearly captured compared to the surrounding subject.

  FIG. 5 is a functional block diagram of the shake control microcomputer 8 in the first embodiment. The shake control microcomputer 8 includes a roll rotation amount calculation unit 51, a movement amount calculation unit 52, a drive control unit 53, and a camera work detection unit 54. The configuration of the shake control microcomputer 8 in the first embodiment is obtained by adding a camera work detection unit 54 to the above-described normal configuration of FIG.

  The roll rotation amount calculation unit 51 calculates the rotation amount of the camera body 1 during a predetermined period based on the angular velocity detected by the angular velocity sensor 9.

  The camera work detection unit 54 detects whether an operation intended for a panning shot is performed by the photographer. Here, as an operation intended for panning shot shooting, it is detected here whether a rotation operation (hereinafter also referred to as a rotation effect operation) at a certain speed or higher has been applied to the camera body 1 by the photographer.

  The camera work detection unit 54 detects the angular velocity detected by the angular velocity sensor 9, and when the detected angular velocity exceeds a predetermined threshold, the photographer operates the rotation effect on the camera body 1 for the purpose of rotational panning shooting. It is determined that

  A specific example of the determination of the rotation effect operation will be described. When the camera body 1 is normally held by hand, the angular velocity corresponding to (image) blurring with the optical axis direction as the rotation axis is within ± 2 deg / s. Therefore, a case where the photographer rotates at an angular velocity of 10 deg / s or more is defined as a rotation effect operation. That is, 10 deg / s is the threshold value for the rotational panning shooting determination.

  The movement amount calculation unit 52 performs different processing depending on whether or not the rotation effect operation is detected by the camera work detection unit 54. When the rotation effect operation is not detected by the camera work detection unit 54, the movement amount calculation unit 52 performs the normal camera shake correction process described with reference to FIG.

  When the rotation effect operation is detected by the camera work detection unit 54, the movement amount calculation unit 52 causes the imaging element 5 to rotate by a predetermined amount in the same direction as the roll rotation calculated by the roll rotation amount calculation unit 51. Calculate the amount of movement.

  The movement amount calculator 52 calculates the roll rotation amount θr calculated by the roll rotation amount calculator 51 so that the rotation amount of the actually captured image matches the preset target rotation amount (target rotation angle) θa. Accordingly, the amount by which the image sensor 5 is rotated per unit time is calculated. The amount by which the image sensor 5 is rotated is referred to as a correction rotation amount (correction rotation angle) θi. The rotation angle θ shown in FIG. 3 is the screen rotation amount θe, and the target rotation amount θa is obtained from the screen rotation amount θe and the shutter speed (exposure time t).

  For example, if it is set in advance that a rotation effect of 10 deg in total is to be added and the shutter speed is 1/10 sec, and the unit time is 1 ms, the target rotation amount θa per unit time is 10 ÷ 100 = 0. .1 deg.

  Then, it is assumed that the change in the roll rotation amount θr per unit time calculated by the roll rotation amount calculation unit 51 is 0.05 deg. In this case, the movement amount calculation unit 52 calculates 0.05 deg (corrected rotation amount θi) by subtracting 0.05 deg (roll rotation amount θr) that is a rotation angle change from the target rotation amount θa = 0.1 deg. . The drive control unit 53 issues a 0.05 deg drive instruction to the drive unit 6.

  FIG. 6 is a diagram illustrating the relationship between the exposure time and the rotation amount, etc., during rotary panning shooting. FIG. 6A is a diagram illustrating an example of how to determine the target rotation amount θa. The horizontal axis is the exposure time t, and the vertical axis is the rotation amount θ. In this example, the target rotation amount θa is increased at a constant rate during the exposure period, and the target rotation amount per unit time is determined so as to reach the screen rotation amount θe at the end of exposure. In this example, since the target rotation amount θa increases linearly, the target angular velocity ωa that is the corresponding angular velocity is constant.

  FIG. 6B is a diagram showing a roll angular velocity ωr that is an angular velocity generated by a photographer's rotation operation, camerawork detection timing, and the like. The horizontal axis is the exposure time t, and the vertical axis is the angular velocity ω. tc is the timing when the roll angular velocity ωr exceeds the threshold ωc. The camera work detection unit 54 detects a rotation effect operation at the timing tc. The threshold value ωc is, for example, 10 deg / s.

  The system controller 7 detects the 2nd release, opens the shutter 4 and starts exposure. Further, it is assumed that the target angular velocity ωa = 100 deg / sec is set from the screen rotation amount θe = 10 deg and t = 1/10.

  It is assumed that the roll angular velocity ωr by the photographer is smaller than the target angular velocity ωa immediately after the exposure starts, but the roll angular velocity ωr becomes larger than the target angular velocity ωa from the middle, and the roll angular velocity ωr becomes smaller than the target angular velocity ωa immediately before the end of exposure.

  In this case, the movement amount calculation unit 52 calculates the corrected rotation amount θi so as to correct the deviation of the roll angular velocity ωr from the target angular velocity ωa.

  That is, the movement amount calculation unit 52 calculates the correction rotation amount θi corresponding to the correction angular velocity ωi that is the difference of ωa−ωr every unit time. The drive control unit 63 controls the drive unit 6 based on the calculated correction rotation amount θi, and the image sensor 5 is rotated at the correction angular velocity ωi.

  + ωi indicates that the image sensor 5 is rotated in the same direction as the roll rotation direction. -Ωi indicates that the imaging element 5 is rotated in the direction opposite to the roll rotation direction. The roll angular velocity ωr due to the rotation operation of the photographer during the exposure may be insufficient or may exceed the target angular velocity ωa, and the difference of the roll angular velocity ωr with respect to the target angular velocity ωa is rotated by the rotation of the image sensor 5. Thus, the amount of rotation of the subject image on the surface of the image sensor 5 during exposure can be kept constant.

  FIG. 6C is a diagram in which the curve shown in FIG. 6B is represented by the rotation amount θ on the vertical axis. FIG. 6 is a diagram illustrating a relationship between a rotation amount θr caused by a photographer's roll operation during exposure and a rotation amount θi of the image sensor 5 rotated by a driving unit 6; Similar to the relationship with the angular velocity, the corrected rotation amount θi corrected by the rotation of the image sensor 5 is θa−θr = θi. Immediately after the start of exposure, the drive control unit 53 controls the image sensor 5 to move in the roll rotation direction, and then controls the image sensor 5 to move in the direction opposite to the roll rotation direction. Then, the image pickup device 5 is controlled to move again in the roll rotation direction.

  FIG. 7 is a flowchart showing the procedure of the rotation correction process in the first embodiment. The following rotation correction processing is mainly executed by the shake control microcomputer 8. The initial state of the process described below is a state before the imaging apparatus 100 shown in the first embodiment performs an exposure (photographing) operation, that is, a state of waiting for photographing.

  During photographing standby, the roll rotation amount calculation unit 51 detects a roll angular velocity ωr that is a rotational angular velocity around the optical axis based on an output from the angular velocity sensor 9 (step S10). The camera work detection unit 54 detects whether a rotation effect operation (camera work) has been performed on the camera body 1 based on the detection result of the roll angular velocity ωr by the angular velocity sensor 9 (step S12). Here, the camera work detection unit 54 may determine that the rotation effect operation has been performed when the roll angular velocity ωr exceeds the threshold ωc for a preset time or more. This is to prevent false detection.

  Next, the blur control microcomputer 8 detects whether or not the 2nd release operation of the release switch 11 has been performed (step S14). The shake control microcomputer 8 receives a notification of the 2nd release operation of the release switch 11 from the system controller 7. When the shake control microcomputer 8 does not detect that the 2nd release operation of the release switch 11 has been performed (NO in step S14), the process of steps S10 to S14 is repeated at a predetermined cycle (for example, 1 ms).

  On the other hand, when the blur control microcomputer 8 detects that the 2nd release operation of the release switch 11 has been performed (YES in Step S14), the roll rotation amount calculation unit 51 detects the roll angular velocity ωr by the angular velocity sensor 9 (Step S14). S16). Here, in the process of step S16, since the roll angular velocity ωr has already been detected in the process of step S10 described above, the roll angular velocity ωr detected in step S10 described above is immediately after the process of step S10. May be used as they are.

  Next, the movement amount calculation unit 52 determines whether the rotation effect operation is being performed by the detection of the camera work detection unit 54 in the process of step S12 (step S18).

  When the movement amount calculation unit 52 determines that the rotation effect operation is being performed by the detection of the camera work detection unit 54 (YES in step S18), the movement amount calculation unit 52 calculates the target rotation amount θa (step S20). The movement amount calculation unit 52 calculates a target rotation amount θa based on the shutter speed and the screen rotation amount θe. As described above, the screen rotation amount θe is a predetermined rotation amount (angle) and is, for example, 5 deg or 10 deg.

  The screen rotation amount θe may be a rotation amount determined based on the roll angular velocity ωr or a rotation amount determined based on the set shutter speed. For example, the amount may be set to 5 deg when the shutter speed is 1/30 sec and 10 deg when the shutter speed is 1/10 sec.

  On the other hand, when determining that the rotation effect operation is not being performed (NO in step S18), the movement amount calculation unit 52 performs camera shake correction, and calculates the camera shake correction amount according to the output of the angular velocity sensor 9 (step S22). The camera shake correction amount is a rotation amount that cancels the rotation amount based on the roll angular velocity ωr.

  The drive control unit 53 outputs a drive instruction to the drive unit 6 based on the rotation amount calculated in step S20 or step S22 (step S24), and controls the drive unit 6. The drive control unit 53 outputs a drive instruction to the drive unit 6 based on the target rotation amount θa calculated in step S20 by the movement amount calculation unit 52 or the camera shake correction amount calculated in step S22. When camerawork is detected, the drive control unit 53 rotates the image sensor 5 by the target rotation amount θa so as to perform stable rotational panning photographing as described in FIG. 6 as rotational panning photographing. Let

  The shake control microcomputer 8 determines whether or not to end the rotation correction process (step S26). The blur control microcomputer 8 ends the rotation correction when it receives a notification of the end of exposure from the system controller 7. The blur control microcomputer 8 returns to step S16 and continues the correction until it is determined that the rotation correction has not ended (NO in step S26) until the exposure end notification is received. When receiving the notification of the end of exposure, the blur control microcomputer 8 determines that the rotation correction has ended (YES in step S26), and ends the rotation correction process.

(Modification of the first embodiment)
Next, a modification of the first embodiment will be described. In the first embodiment described above, it is necessary to perform the operation of rotating the camera body 1 and the release operation almost simultaneously in order to start the rotary panning shooting. The modified example of the first embodiment is an example in which the operation can be simplified by enabling rotational panning shooting only by the rotation operation without simultaneously performing the rotation operation and the release operation. The block diagram of the imaging apparatus 100 and the functional block diagram of the shake control microcomputer 8 are the same as those in FIGS.

  FIG. 8 is a flowchart showing the procedure of the rotation correction process according to the modification of the first embodiment. This processing is started when it is assumed that the rotational panning mode is selected in advance by user setting and the release switch 11 is further pressed down for 2nd release. In this example, even if the 2nd release is pressed, the exposure is not started immediately.

  The roll rotation amount calculation unit 51 calculates the roll angular velocity ωr from the output of the angular velocity sensor 9 (step S30). The camera work detection unit 54 detects whether camera work has been performed based on the detected roll angular velocity ωr (step S32). Similar to step S12 in FIG. 7, the camera work detection unit 54 detects whether a specific camera work has been performed such that the roll angular velocity ωr, which is the rotational angular velocity around the optical axis, exceeds a predetermined threshold ωc.

  Next, the shake control microcomputer 8 determines whether the rotation effect operation is being performed (step S34). The shake control microcomputer 8 determines that the rotation effect operation is being performed when the camera work detection unit 54 detects that a specific camera work is being performed. If the shake control microcomputer 8 determines that the rotation effect operation is not being performed (NO in step S34), the process returns to step S30.

  When determining that the rotation effect operation is being performed (YES in step S34), the blur control microcomputer 8 instructs the system controller 7 to start exposure (step S36). The system controller releases the shutter 4 and starts exposure. That is, in the graph of FIG. 6B described above, tc is the position before the start of exposure, but in this modification, tc matches the exposure start position.

  The roll rotation amount calculation unit 51 detects the roll angular velocity ωr (step S38). Note that the roll angular velocity ωr detected in step S30 may be used in the first process immediately after the rotation effect operation is detected.

  The movement amount calculation unit 52 calculates a corrected rotation amount θi from the detected roll angular velocity ωr and a preset target rotation amount θa (step S40). The drive control unit 53 outputs a drive instruction to the drive unit 6 based on the calculated corrected rotation amount θi (step S42), and controls the drive unit 6.

  The shake control microcomputer 8 determines whether or not to end the rotation correction process (step S44). The blur control microcomputer 8 ends the rotation correction when it receives a notification of the end of exposure from the system controller 7. The blur control microcomputer 8 returns to step S38 and continues the correction, assuming that the rotation correction is not completed (NO in step S44) until receiving a notification of the end of exposure. When receiving the notification of the end of exposure, the blur control microcomputer 8 determines that the rotation correction has ended (YES in step S44) and ends the rotation correction process.

  As described above, according to the first embodiment, it is possible to acquire an image to which a stable rotation effect is added even when the rotation operation by the photographer is uneven. Further, according to the modification of the first embodiment, exposure is automatically started by the rotation effect operation, and the release pressing operation is not necessary, so that it is possible to more easily enjoy rotational panning shooting.

Second Embodiment
In the second embodiment, an imaging apparatus that performs zoom shooting during exposure in addition to rotational panning shooting will be described. Inter-exposure zoom photography is photography in which a zoom operation is performed during exposure. In the second embodiment, the rotation effect is provided in accordance with the zoom operation without the photographer actually performing the rotation operation. Since the entire block diagram of the imaging apparatus 200 of the second embodiment is the same as the block diagram of FIG. 1 shown in the first embodiment, a description thereof will be omitted.

  The imaging apparatus 200 is prepared so that a zoom & rotation shooting mode and a normal shooting mode can be selected from a shooting menu for setting a shooting mode. The zoom & rotation shooting mode is executed when the zoom & rotation shooting mode is selected in the shooting menu of the imaging apparatus 200 and a zoom operation by the photographer is detected at the start of shooting. In the zoom & rotation shooting mode, the image sensor is automatically rotated together with the zoom exposure during exposure, and rotational panning shooting is also executed simultaneously. In the second embodiment, it is assumed that the camera body 1 is fixed to a tripod or the like and the zoom operation is performed in a fixed state. This is because it is difficult to perform the release operation and the zoom operation at the same time in a hand-held state.

  FIG. 9 is an example of an image shot in the zoom & rotation shooting mode. The image in FIG. 9 is taken while being rotated counterclockwise while zooming in the tele direction. T is the locus of image movement. The image is moved radially from the screen center O toward the periphery by a zoom-in operation (zoom operation in the tele direction), and at the same time, the image is rotated counterclockwise by the screen rotation amount θ about the screen center O as a rotation center. .

  FIG. 10 is a functional block diagram of the shake control microcomputer 60. The shake control microcomputer 60 includes a roll rotation amount calculation unit 61, a movement amount calculation unit 62, a drive control unit 63, and a field angle change amount calculation unit 64. The system controller 7 determines whether or not the zoom operation unit 10 has performed a zoom operation based on the output from the encoder 3, and notifies the movement amount calculation unit 62 if the zoom operation has been performed. Further, the system controller 7 notifies the movement amount calculation unit 62 of the set shutter speed and the exposure start timing and end timing by the 2nd release.

  The system controller 7 calculates the focal length of the optical system 2 based on the output from the encoder 3, and notifies the calculated angle information to the view angle change amount calculation unit 64. The view angle change amount calculation unit 64 calculates the view angle change amount per unit time based on the change in the focal length notified from the system controller 7.

  The roll rotation amount calculation unit 61 calculates the roll rotation amount θr of the camera body 1 during a predetermined period based on the angular velocity detected by the angular velocity sensor 9 as in the first embodiment.

  In the zoom and rotation shooting mode, the movement amount calculation unit 62 calculates a correction rotation amount θi for rotational panning as the rotation amount of the image sensor based on the view angle change amount by the view angle change amount calculation unit 64. . The movement amount calculation unit 62 calculates a camera shake correction amount from the roll rotation amount θr by the roll rotation amount calculation unit 61 in the normal photographing mode. The drive control unit 63 controls the drive unit 6 by instructing the drive unit 6 to drive based on the movement amount (corrected rotation amount θi or camera shake correction amount) calculated by the movement amount calculation unit 62.

  Next, the relationship between the angle of view that changes due to the zoom operation and the amount of rotation that changes in conjunction with this angle of view will be described. 11 and 12 are diagrams schematically illustrating image movement in the zoom between exposures. FIG. 11 is a diagram for explaining image movement when a zoom-out operation (operation for moving the focal length in the wide direction) is performed during exposure.

  FIG. 11A is a diagram showing image movement between point A at a distance R1 near the screen center O and point B at a distance R2 far from the screen center O. FIG. Q11 indicates the direction and amount of image movement at point A by zooming out, and Q12 indicates the direction and amount of image movement at point B by zooming out. Both the images of points A and B move toward the screen center O, but the image movement amount at the point B far from the screen center O is larger than the image movement amount at the point A near the screen center O.

  FIG. 11B shows the direction and amount of image movement Q at each position on the screen. As shown in FIG. 11B, an image is formed with little image movement at the screen center O, and in the peripheral part, the image movement amount increases as the distance from the screen center O increases, and the image flows toward the screen center. Taken. As a result, the center of the screen is captured as a clear image as compared with the peripheral portion, so that the central portion is more emphasized.

  FIG. 12 is a diagram for explaining image movement when a zoom-in operation (operation for moving the focal length in the tele direction) is performed during exposure. FIG. 12A is a diagram showing image movement between point A at a distance R1 near the screen center O and point B at a distance R2 far from the screen center O. Q21 indicates the direction and amount of image movement at point A by zooming in, and Q22 indicates the direction and amount of image movement at point B by zooming in. Both the images of point A and point B move radially from the screen center O toward the periphery, but the image movement amount at point B far from the screen center O is larger than the image movement amount at point A near the screen center O. growing.

  FIG. 12B shows the direction and amount of image movement at each position on the screen by arrows. As shown in FIG. 12B, an image is formed with little image movement at the center O of the screen, and the amount of image movement increases as the distance from the screen center O increases in the periphery, and the image moves from the center of the screen toward the periphery. Flowing and photographed. As a result, the center of the screen is photographed as a clearer image than the periphery, so that the center is more emphasized.

As described above, the movement amount calculation unit 62 calculates the rotation amount of the image sensor 5 in conjunction with the focal length by the zoom operation. Hereinafter, the relationship between the zoom operation and the rotation amount of the rotation flow shooting will be described. .
FIG. 13 is a diagram illustrating the relationship between the focal length and the angle of view. As shown in FIG. 13, the angle of view changes according to the change in focal length, and the angle of view becomes smaller (narrower) as the focal length becomes longer. The angle of view is determined by the size and focal length of the image sensor. FIG. 14 is a diagram illustrating an example of the relationship between the angle of view and the correction rotation amount θi. The example of FIG. 14 is a case where the relational expression between the angle of view and the correction rotation amount θi is the following quadratic expression. By using the quadratic expression, the locus of image movement is formed in a spiral shape like the image shown in FIG.
θi = α × β ² (Formula 1)
θi: Correction rotation amount (deg) due to rotation of the image sensor
α: Effect coefficient
β: Angle of view (deg)

  Since the degree of the rotation effect can be adjusted by the value of α, α should be appropriately changed depending on the focal length and the desired degree of effect.

  In addition, as an example, the relational expression between the change in the angle of view and the rotation amount is defined as a quadratic expression. However, the present invention is not limited to this form. It doesn't matter. When the angle of view is small, a linear expression may be applied. A table indicating the relationship between the focal length and the angle of view and a table indicating the relationship between the angle of view and the correction rotation amount θi are stored in a memory (not shown). The view angle change amount calculation unit 64 reads a table indicating the relationship between the focal length and the view angle, and calculates the view angle. The movement amount calculation unit 62 reads a table indicating the relationship between the angle of view and the correction rotation amount θi, and calculates the correction rotation amount θi.

  FIG. 15 is a diagram illustrating image movement in which the image movement by the zoom described in FIG. 11 or 12 and the image movement by the rotation described in FIG. 4 are combined. The zoom here is based on a zoom-in operation. FIG. 15A is a diagram illustrating image movement of point A at a position close to the screen center O (distance R1) and point B at a position far from the screen center O (distance R2).

  Image movement due to zooming in at point A is Q21 (broken line) extending outward from the screen center O, and image movement due to rotation at point A is an arc-shaped P1 (broken line) centered on the screen center O. T1 obtained by combining Q1 and P1 is a locus indicating the image movement of the point A in the zoom & rotation shooting mode. The same applies to the point B, and T2 obtained by combining Q22 and P2 becomes a locus indicating the image movement of the point B in the zoom & rotation shooting mode. The trajectory of image movement for both T1 and T2 is a spiral, and T2 is a trajectory longer than T1. FIG. 15B shows the direction and amount of movement of the combined image at each position on the screen.

  FIG. 16 is a flowchart showing the procedure of the rotation correction process in the second embodiment. This processing is started in a state where the zoom & rotation shooting mode is selected in advance by the photographer in the shooting menu or the like. The following rotation correction processing is mainly executed by the shake control microcomputer 60.

  It is periodically determined whether a notification that the 2nd release operation of the release switch 11 has been performed is received from the system controller 7 (step S50). If it is determined that there is no notification of the 2nd release operation from the system controller 7 (step S50 NO), step S50 is looped.

  If it is determined that a 2nd release operation notification has been received from the system controller 7 (YES in step S50), the roll rotation amount calculation unit 61 detects the roll angular velocity ωr from the angular velocity sensor 9 (step S52). The rotation detected here is handled as camera shake in step S60. The system controller 7 starts exposure by a 2nd release operation.

  Next, the movement amount calculation unit 62 determines whether the zoom & rotation shooting mode has been executed (step S54). Here, it is assumed that the zoom & rotation shooting mode is executed when a zoom operation is performed by the photographer. That is, the movement amount calculation unit 62 determines that the zoom & rotation shooting mode has been executed when receiving a zoom operation notification from the system controller 7. If the zoom & rotation shooting mode is not received even if the zoom & rotation shooting mode is selected, the movement amount calculation unit 62 determines that the zoom & rotation shooting mode has not been executed, and performs the normal shooting process. Run. In the first embodiment, the specific camera work for starting the rotation panning shot is the rotation effect operation, but in the second embodiment, the zoom operation in the zoom & rotation shooting mode is the specific camera work.

  When the movement amount calculation unit 62 has not received a zoom operation notification from the system controller 7, the movement amount calculation unit 62 determines that the zoom & rotation shooting mode has not been executed (NO in step S54), and the roll angular velocity ωr detected in step S52. The camera shake correction amount is calculated from (step S60).

  When the movement amount calculation unit 62 receives a zoom operation notification from the system controller 7, the movement amount calculation unit 62 determines that the zoom & rotation shooting mode has been executed (YES in step S <b> 54), and the angle of view change amount calculation unit 64 sets the focal length. The correction rotation amount θi is calculated from the view angle change amount calculated in response (step S56) (step S58). The movement amount calculation unit 62 calculates the correction rotation amount θi from the view angle change amount based on, for example, Equation 1 (FIG. 14).

  The drive control unit 63 outputs a drive instruction to the drive unit 6 based on the camera shake rotation amount calculated in step S60 or the corrected rotation amount θi calculated in step S58 (step S62). To control.

  The shake control microcomputer 60 determines whether to end the rotation correction process (step S64). The blur control microcomputer 60 ends the rotation correction when receiving a notification of the end of exposure from the system controller 7. The blur control microcomputer 60 returns to step S52 and continues the correction, assuming that the rotation correction has not ended (NO in step S64) until receiving the notification of the end of exposure. When receiving the notification of the end of exposure, the blur control microcomputer 60 determines that the rotation correction has ended (YES in step S64), and ends the rotation correction process.

  As described above, according to the second embodiment, it is possible to easily perform a shooting operation that combines rotary shooting and zooming between exposures, and an image with a higher shooting effect can be obtained.

  It should be noted that as a zoom operation to be camera work, it may be determined that the camera work is performed only when the zoom change speed or the change amount is equal to or greater than a certain value, and an erroneous operation may be prevented.

<Third Embodiment>
Next, a third embodiment will be described. In the third embodiment, in the case of rotation effect shooting, the moving range of the image sensor is expanded compared to the case of normal camera shake correction. In addition, about the structure which is common in 1st Embodiment and 2nd Embodiment, description is abbreviate | omitted and the new structure which can be based on 3rd Embodiment is mainly demonstrated.

  FIG. 17 is an overall block diagram illustrating a configuration example of the imaging apparatus 300 according to the third embodiment. The imaging device 300 differs from the imaging device 100 shown in the first embodiment and the imaging device 200 shown in the second embodiment in the number of mounted angular velocity sensors. Specifically, in addition to the angular velocity sensor 9c that detects the angular velocity (roll) that rotates around the optical axis, it rotates perpendicularly to the imaging surface of the imaging device 5 and around the axis in the vertical direction (yaw). The imaging apparatus 300 includes an angular velocity sensor 9a that detects an angular velocity, and an angular velocity sensor 9b that detects an angular velocity that is orthogonal to the optical axis and rotates around a horizontal axis with respect to the imaging surface of the imaging device 5 (pitch). Have. The shake control microcomputer is distinguished from the shake control microcomputer 70 based on the first embodiment and the shake control microcomputer 80 based on the second embodiment, but is otherwise the same as FIG. The description is omitted.

  FIG. 18 is a functional block diagram of correction processing by the shake control microcomputer 70 when the imaging apparatus 100 according to the first embodiment is used as a base. The shake control microcomputer 70 includes a rotation amount calculation unit 71, a movement amount calculation unit 72, a drive control unit 73, a camera work detection unit 74, and a limit setting unit 75.

  The rotation amount calculation unit 71 calculates the rotation amount (angle change) in each direction based on the angular velocities from the angular velocity sensor 9a, the angular velocity sensor 9b, and the angular velocity sensor 9c. The limit setting unit 75 sets the movement limit range of the image sensor 5 by switching between the normal correction range and the extended correction range according to whether camera shake correction or rotation effect shooting is performed, and notifies the movement amount calculation unit 72 of the setting.

  FIG. 19 is a diagram comparing the normal correction range 103 and the extended correction range 104. Reference numeral 101 denotes an image pickup surface of the image pickup element 5, and reference numeral 102 denotes an image circle of an image formed by the optical system 2. The normal correction range 103 is set so as to be within the range of the image circle 102 so that the resolution and the amount of light are guaranteed. The extended correction range 104 is set to be wider than the normal correction range 103, is a size such that a corner portion protrudes from the image circle 102, and is a range in which movement is guaranteed on the mechanical configuration of the drive unit 6.

  The movement amount calculation unit 72 calculates the movement amount of the subject image on the imaging surface of the image sensor 5 based on the rotation amount calculated by the rotation amount calculation unit 71. The movement amount calculation unit 72 sets a normal correction range by a notification from the limit setting unit 75 during camera shake correction, and calculates a camera shake amount correction amount within the set normal correction range. The movement amount calculation unit 72 sets an extended correction range by notification from the limit setting unit 75 at the time of rotation effect shooting, and sets the correction rotation amount θi of the image sensor 5 so as to supplement the target rotation amount θa within the set extended correction range. calculate. Since the camera work detection unit 74 is the same as the camera work detection unit 54, description thereof is omitted.

  At the time of rotation effect imaging, the drive unit 6 moves the imaging surface 101 of the imaging element within a rectangular extended correction range 104 indicated by a broken line. Although the image quality around the screen may be deteriorated by protruding from the image circle 102, there is no problem because the rotational panning shooting is a shooting that emphasizes the center subject.

  At the time of camera shake correction, the rotation amount calculation unit 71 calculates the rotation amount (angle change) in each direction based on the angular velocities from the angular velocity sensor 9a and the angular velocity sensor 9b. The movement amount calculation unit 72 calculates the movement amount due to camera shake of the subject image on the imaging surface of the imaging element 5 based on the information on the angle change and the focal length of the optical system 2. The drive control unit 73 issues a drive instruction to the drive unit 6 with the movement amount that cancels the calculated camera shake amount as a correction amount.

  At the time of camera shake correction, the drive unit 6 moves the imaging surface 101 of the imaging device within a rectangular normal correction range 103 indicated by a broken line. As described above, the correction limit range of the image sensor 5 in the yaw direction and the pitch direction at the time of camera shake correction control is set within the normal correction range 103 that is within the range of the image circle 102.

  As described above, in rotational panning shooting, the periphery of the image is an area where blur occurs due to the periphery of the image. Therefore, the correction limit range is switched from the normal correction range 103 to the extended correction range 104 which is a wider range, and the image sensor 5 is changed. Rotate to a larger angle.

  FIG. 20 is a flowchart illustrating the procedure of the angle blur correction process in the third embodiment. An example based on the first embodiment will be described regarding the procedure of the rotation correction processing. The following rotation correction process is mainly executed by the shake control microcomputer 70.

  The shake control microcomputer 70 periodically determines whether or not a 2nd release operation notification has been received from the system controller 7 (step S70). If the blur control microcomputer 70 determines that it has not received a 2nd release operation notification from the system controller 7 (step S70 NO), it loops step S70.

  If the blur control microcomputer 70 determines that the 2nd release operation notification is received from the system controller 7 (YES in step S70), it determines whether the rotation effect is effective (step S72). The system controller 7 starts exposure by a 2nd release operation. In the example of the first embodiment, that the rotation effect is effective corresponds to the rotation effect operation in step S18. If the rotation effect is being operated, it is determined that the rotation effect is effective.

  When it is determined whether the rotation effect is effective (YES in step S72), the limit setting unit 75 notifies the movement amount calculation unit 72 to set the extended correction range 104 as the movement range, and the movement amount calculation unit 72 sets the extended correction range. 104 is set (step S74).

  If it is determined that the rotation effect is not effective (NO in step S72), the limit setting unit 75 notifies the movement amount calculation unit 72 to set the normal correction range 103 as a movement range, and the movement amount calculation unit 72 notifies the normal correction range 103. Is set (step S76).

  Following the movement range setting in step S74 and step S76, angular velocity detection is performed by the angular velocity sensor 9a or the like (step S78). The movement amount calculation unit 72 calculates a correction amount (step S80). The movement amount calculation unit 72 calculates the rotation correction amount θi as the correction amount when the rotation effect is effective, and calculates the camera shake correction amount as the correction amount when the rotation effect is not effective. The drive control unit 73 issues a drive instruction to the drive unit 6 according to the calculated correction amount (step S82). The drive unit 6 rotates the image sensor 5 by an amount corresponding to the instruction.

  The shake control microcomputer 70 receives the instruction to end the exposure from the system controller 7 and ends the shake correction. The shake control microcomputer 70 determines whether or not the rotation correction is finished (step S84). If the blur control microcomputer 70 determines that the rotation correction is not completed due to exposure (NO in step S84), the process returns to step S78. When the shake control microcomputer 70 determines that the rotation correction is finished when the exposure is finished (YES in step S84), the shake correction process is finished.

  FIG. 21 is a functional block diagram of correction processing by the shake control microcomputer 80 according to the third embodiment when the imaging apparatus 200 according to the second embodiment is used as a base. The shake control microcomputer 80 includes a rotation amount calculation unit 81, a movement amount calculation unit 82, a drive control unit 83, an angle of view change amount calculation unit 84, and a limit setting unit 85. The rotation amount calculation unit 81 is the same as the rotation amount calculation unit 71. The drive control unit 83 and the view angle change amount calculation unit 84 are the same as the drive control unit 63 and the view angle change amount calculation unit 64.

  The limit setting unit 85 sets the normal correction range 103 during camera shake correction as the movement range of the image sensor, sets the extended correction range 104 in the zoom & rotation shooting mode, and notifies the movement amount calculation unit 82 of the setting contents. To do.

  As described in the second embodiment, the movement amount calculation unit 82 calculates the amount of camera shake correction at the time of camera shake correction, and calculates the correction rotation amount θi according to the angle of view change in the zoom & rotation shooting mode. . In response to notification from the limit setting unit 85, the movement amount calculation unit 82 sets the normal correction range 103 during camera shake correction as the movement range of the image sensor 5, and in the zoom & rotation shooting mode, the normal correction range 103 is set. A wide extended correction range 104 is set, and the rotation amount is calculated to a larger angle. In addition, when the shooting mode is the zoom & rotation shooting mode, the movement amount calculation unit 82 executes rotation flow shooting by a zoom operation.

  Since the procedure of the rotation correction process based on the second embodiment is the same as that in the flowchart of FIG. 20, only different points will be described below. The rotation correction process is mainly executed by the shake control microcomputer 80. Then, regarding the rotation effect validity in step S72, the movement amount calculation unit 82 determines that the rotation effect is effective when it is determined that the zoom operation is performed in the zoom & rotation shooting mode state. This is the same as step S54 in FIG.

As described above, according to the third embodiment, at the time of rotational panning shooting, the moving range of the image sensor is expanded as compared with the case of normal camera shake correction, so that an image with a larger rotation amount can be taken.
In the description of the first to third embodiments, it has been described that the blur correction process is performed by software processing by the blur control microcomputer. However, part or all of the blur correction process may be realized by hardware processing.

  Further, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, all the constituent elements shown in the embodiments may be appropriately combined. Furthermore, constituent elements over different embodiments may be appropriately combined. It goes without saying that various modifications and applications are possible without departing from the spirit of the invention.

1 Camera body
2 Optical system
3 Encoder
4 Shutter 5 Image sensor
6 Drive unit
7 System controller 8, 60, 70, 80 Blur correction microcomputer
9, 9a, 9b, 9c Angular velocity sensor
10 Scaling operation section 11 Release switch
41, 51, 61 Roll rotation amount calculation unit 42, 52, 62, 72, 82 Movement amount calculation unit 43, 53, 63, 73, 83 Drive control unit 54, 74 Camera work detection unit 64, 84 Calculation of change in angle of view Part
71, 81 Rotation amount calculation unit 75, 85 Limit setting unit 100, 200, 300 Imaging device

Claims (11)

In an imaging apparatus having an optical system that forms an image of an object and an image sensor that converts the image of the object to be formed into an image signal,
A drive unit that moves the image sensor to change the position of the subject image to be imaged;
A camera work detection unit for detecting a specific operation of the photographer with respect to the imaging device;
When the specific operation is detected by the camera work detection unit, the drive unit is controlled to rotate the imaging element around the optical axis of the optical system for rotation panning shooting. A drive control unit
An imaging apparatus characterized by that. An angular velocity sensor that detects rotation about the optical axis applied from the outside to the imaging device;
The camera work detection unit detects the specific operation by detecting the rotation around the optical axis by the angular velocity sensor, as an operation in which rotation around the optical axis is applied to the imaging device.
The drive control unit is configured to rotate the imaging device around the optical axis by a difference in rotation amount applied around the optical axis from the outside with respect to a target rotation amount determined as a target for rotating the subject image. Control the drive
The imaging apparatus according to claim 1. The target rotation amount is calculated from the exposure time and the rotation amount of the photographed subject image, and the light of the imaging element is calculated from the difference in rotation amount applied around the optical axis from the outside with respect to the calculated target rotation amount. The imaging apparatus according to claim 2, further comprising a movement amount calculation unit that calculates a rotation amount around the axis. The said camera work detection part detects that the said specific operation was made | formed, when the angular velocity around the said optical axis detected by the said angular velocity sensor exceeds a predetermined threshold value. Imaging device. 2. The drive control unit according to claim 1, wherein when the specific operation is not detected by the camera work detection unit, the drive control unit controls the drive unit to correct camera shake by movement of the imaging device. The imaging device described. The imaging apparatus according to claim 2, further comprising a control unit that starts exposure when the angular velocity sensor detects that the angular velocity around the optical axis exceeds a predetermined value. The optical system has a zoom lens,
The camera work unit detects a zooming operation to the zoom lens as the specific operation,
The image pickup apparatus according to claim 1, wherein the drive control unit controls the drive unit so as to change a rotation around the optical axis of the image pickup device according to the scaling operation. 8. The imaging according to claim 7, wherein the drive control unit controls the drive unit to change the rotation around the optical axis of the imaging element in accordance with a change in an angle of view due to the scaling operation. apparatus. A movement amount calculation unit that calculates a movement amount of the imaging element rotated by the drive control unit and outputs the movement amount to the drive control unit;
The drive control unit controls the drive unit to move the image sensor for camera shake correction when the specific operation is not detected by the camera work detection unit,
The movement amount calculation unit calculates a movement amount of the image sensor by setting a wider movement range of the image sensor in the case of the rotary panning shooting than in the case of the camera shake correction. The imaging apparatus according to claim 1. An optical system that forms an image of an object; an image sensor that converts an image of the object to be imaged into an image signal; and a drive unit that moves the image sensor so as to change the position of the image of the object to be imaged. In the rotational panning shooting method in the imaging device,
A camera work detection step of detecting a specific operation of the photographer with respect to the imaging device;
Controlling the drive unit to rotate the imaging device around an optical axis centered on the optical axis of the optical system when the specific operation is detected by the camera work detection step. Rotating panning shooting method characterized by An optical system that forms an image of an object; an image sensor that converts an image of the object to be imaged into an image signal; and a drive unit that moves the image sensor so as to change the position of the image of the object to be imaged. In the program for controlling the computer of the imaging device,
A camera work detection step of detecting a specific operation of the photographer with respect to the imaging device;
When the specific operation is detected by the camera work detection step, the drive unit is controlled to rotate the image sensor around the optical axis of the optical system for rotation panning shooting. A program comprising the steps.