JP2014035536A - Imaging device and rotary driving control method of rotary optical element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a desired photographing effect obtained by a rotary optical element, for example, even if a posture of a body is changed after determining the desired photographic effect by adjusting a rotation angle position of the rotary optical element with the posture of the body fixed.SOLUTION: When a posture of a body 200 acquired by a posture acquisition part 130 is changed after an input operation of a photographing effect lock part 150 is performed, a rotary driving control part 120 rotationally drives a rotary optical element 110 via a rotary driving part 111, and maintains a rotary angle position to a gravity direction of the rotary optical element 110 at a point of time when the input operation of the photographing effect lock part 150 is performed.

Description

  The present invention relates to a photographing apparatus including a rotating optical element that gives different photographing effects by rotating around an optical axis on an optical path of a photographing optical system, and a rotation drive control method for the rotating optical element in the photographing apparatus.

  Conventionally, a camera body (body body) has a photographic optical system and a polarization filter (rotational optics) that changes the polarization state of a light beam passing through the photographic optical system by rotating around the optical axis on the optical path of the photographic optical system. There is known a polarization filter built-in digital camera (photographing device) including an element) and a rotation driving unit that rotationally drives the polarization filter.

  When taking a picture using this type of digital camera, the photographer fixes the camera body in a predetermined posture in a horizontal composition or a vertical composition, and rotates the polarizing filter through a rotation drive unit to obtain a desired polarization effect. Rotate to the angular position and press the shutter button to take a picture. Thereby, the photographer can obtain a photographed image reflecting a desired polarization effect by the polarization filter.

  However, in an actual shooting scene, as shown in FIG. 6, after rotating the polarizing filter to a rotation angle position where a desired polarization effect can be obtained via the rotation driving unit, before the shooting is performed by pressing the shutter button. In some cases, the posture of the camera body may be changed by rotating the camera body by 90 ° from the horizontal composition to the vertical composition (or from the vertical composition to the horizontal composition). As the posture of the camera body is changed, the rotation angle position of the polarizing filter with respect to the gravitational direction is also shifted by 90 °, so that the polarization effect obtained by the polarizing filter is significantly changed. In the illustrated example, fish underwater can be clearly photographed by removing the water surface reflection by the polarization effect of the polarizing filter before the camera body posture change, but after the camera body posture change, the water surface reflection cannot be completely removed. Underwater fish are almost invisible. For this reason, the rotation angle position of the polarizing filter must be adjusted again after the camera body is changed in posture, which may be complicated, and a photo opportunity may be missed during the adjustment.

  On the other hand, in Patent Document 1, after setting the rotation angle position with the lowest photometric data as the optimum rotation angle position of the polarizing filter, a warning is given when the posture of the camera body changes before the exposure operation is performed, It is disclosed to reset the rotation angle position of the polarizing filter. In that case, the optimal polarization can be obtained by resetting the rotation angle position of the polarization filter with reference to the position at the start of the resetting operation (after attitude change) instead of the initial setting operation position (before attitude change). We are trying to speed up the return to a state where we can achieve the effect.

  However, in Patent Document 1, every time a change in the posture of the camera body is detected, an operation for searching for the optimum rotation angle position of the polarization filter must be performed again. Therefore, the control sequence becomes complicated, and the rotation angle position of the polarization filter is increased. The time lag due to the resetting operation increases. For this reason, there is a possibility that a great inconvenience may occur with respect to shooting of moving objects and the like. Further, what kind of polarization effect is desired to be obtained by the polarizing filter varies depending on the photographer. However, in Patent Document 1, the rotation angle position with the lowest photometric data is uniformly set as the optimum rotation angle position of the polarization filter. Since it is set, it is considered that the degree of satisfaction is low because it is not possible to correspond to the photography preferences of each photographer.

JP 2001-174898 A

  The present invention has been completed based on the above awareness of the problem, and after determining the desired photographing effect by adjusting the rotational angle position of the rotating optical element while fixing the posture of the body body, It is an object of the present invention to provide a photographing apparatus and a rotational driving control method for a rotating optical element that can maintain a desired photographing effect obtained by the rotating optical element even if the posture of the main body changes.

  The imaging device of the present invention includes a body main body, a photographic optical system, a rotating optical element that gives different photographic effects by rotating around an optical axis on an optical path of the photographic optical system, and the rotational optical element that rotates. In the photographing apparatus including the rotation driving unit, a posture acquisition unit that acquires the posture of the body main body, and a photographing effect lock unit that performs an input operation for storing a rotation angle position of the rotating optical element with respect to the gravity direction; When the posture of the body main body acquired by the posture acquisition unit is changed after the input operation of the shooting effect lock unit is performed, the rotary optical element is rotationally driven via the rotation driving unit, and the shooting is performed. A rotation drive control unit that maintains a rotation angle position of the rotary optical element with respect to the direction of gravity at the time when the input operation of the effect lock unit is performed.

  The posture acquisition unit acquires a rotation angle position centered on an axis parallel to the optical axis with respect to a horizontal direction of the body body, and the rotation drive control unit is configured to perform an input operation of the shooting effect lock unit. When the rotation angle position of the body main body acquired by the posture acquisition unit is changed after being performed, the rotation optical element is rotationally driven via the rotation drive unit so as to cancel the change of the rotation angle position. be able to.

  The posture acquisition unit may include a horizontal level that detects a rotational angle position around an axis parallel to the optical axis with respect to the horizontal direction of the body body.

  The photographing apparatus of the present invention further includes a filter rotation switch that performs an input operation for rotationally driving the rotary optical element via the rotational drive unit, and the rotational drive control unit includes the photographing effect lock unit. When the input operation is not performed, the input operation of the filter rotation switch can be validated, and after the input operation of the photographing effect lock unit is performed, the input operation of the filter rotation switch can be invalidated. .

  The imaging apparatus of the present invention is an insertion / removal drive that drives the rotation optical element between an insertion position located on the optical path of the imaging optical system and a separation position separated from the optical path of the imaging optical system. A mechanism may be further provided.

  The rotating optical element can be composed of a polarizing filter that changes a polarization state of a light beam passing through the photographing optical system.

  The rotational drive control method of the rotating optical element of the present invention includes a body optical system, a rotating optical element that gives a different shooting effect by rotating around an optical axis on an optical path of the shooting optical system, In a photographing apparatus including a rotational drive unit that rotationally drives a rotating optical element, the method includes: a step of controlling rotational driving of the rotating optical element, the step of acquiring the posture of the body main body, and the gravitational direction of the rotating optical element A step of performing an input operation for storing a rotation angle position with respect to the position, and when the posture of the body main body obtained after the input operation is changed, the rotational optical element is rotationally driven via the rotational drive unit. And maintaining the rotational angle position of the rotating optical element with respect to the direction of gravity when the input operation is performed.

  In the obtaining step, a rotational angle position around an axis parallel to the optical axis is obtained with reference to a horizontal direction of the body body, and in the maintaining step, the obtaining is performed after performing the input operation. When the rotational angle position of the body main body changes, the rotary optical element can be rotationally driven via the rotational drive unit so as to cancel the change of the rotational angle position.

  According to the present invention, when the rotation of the body main body acquired by the posture acquisition unit changes after the input operation of the photographing effect lock unit is performed, the rotation drive control unit moves the rotation optical element via the rotation drive unit. Rotation is driven, and the rotational angle position of the rotating optical element with respect to the direction of gravity at the time when the input operation of the photographing effect lock unit is performed is maintained. For this reason, after adjusting the rotation angle position of the rotating optical element with the posture of the body main body fixed and determining a desired photographing effect, even if the posture of the body main body is changed, it is obtained by the rotating optical element. A desired shooting effect can be maintained.

It is a block diagram which shows the structure of the digital camera by this invention. FIG. 2A is a diagram for explaining how the polarization direction is adjusted by rotating the polarizing filter around the photographing optical axis, and FIG. 2B shows the rotation angle position of the polarizing filter and incident on the CCD. It is a figure which shows the relationship with the signal output of a to-be-photographed light beam. It is a figure which shows the transition of the rotation angle position centering on an axis | shaft parallel to a photographic optical axis on the basis of the horizontal direction of a camera body. It is a figure for demonstrating the preferential effect of the rotation drive control method of the digital camera and polarizing filter by this invention. 4 is a flowchart illustrating a rotation driving control method for a polarizing filter according to the present invention. It is a figure for demonstrating the technical subject of the rotation drive control method of the conventional digital camera and a polarizing filter.

  FIG. 1 is a block diagram of a digital camera (photographing apparatus) 100 according to the present invention. The digital camera 100 is positioned on the photographing optical axis Z inside the camera body (body main body) 200, and in order from the object side, includes a fixed lens 101, a movable focusing lens 102, and a CCD (imaging device) 103. The photographic optical system is provided. The fixed lens 101 and the focusing lens 102 image the incident subject light beam on the imaging surface 103 a of the CCD 103. The focusing lens 102 is driven by a focusing lens driving unit 102a including a focusing motor, and moves in the photographing optical axis Z direction during focusing.

  The digital camera 100 includes a polarizing filter (rotating optical element) 110 between the fixed lens 101 and the focusing lens 102 in front of the CCD 103. The polarizing filter 110 can be inserted / removed between an insertion position located on the photographing optical axis Z (within the photographing optical path) and a separation position removed from the photographing optical axis Z (the photographing optical path) by an unillustrated insertion / removal drive mechanism. It is. FIG. 1 depicts the case where the polarizing filter 110 is in the insertion position. An insertion / removal driving mechanism for inserting / removing the polarizing filter 110 is well known as described in, for example, Japanese Patent Application Laid-Open No. 2007-3970.

  The polarizing filter 110 is driven by a polarizing filter driving unit (rotation driving unit) 111 at its insertion position, and is rotatable about the photographing optical axis Z. Although not shown, the polarizing filter driving unit 111 includes a stepping motor that drives the polarizing filter 110 step by step by a predetermined angle, and a motor driver that controls rotation of the stepping motor.

  The polarization filter 110 is a linear polarization filter having a function of transmitting only light that vibrates in its own polarization direction (direction of the polarization grating), for example. Therefore, by rotating the polarizing filter 110 around the photographing optical axis Z and adjusting the polarization direction (direction of the polarization grating), the polarization state of the subject luminous flux incident on the CCD 103 is changed to reduce the reflection of the subject. Can be removed.

  2A and 2B show the relationship between the rotation angle position of the polarizing filter 110 when the polarizing filter 110 is rotated about the photographing optical axis Z and the signal output of the subject luminous flux incident on the CCD 103 (polarization characteristics). Is shown. Here, when the rotation angle position when the polarization direction of the polarization filter 110 is directed in the gravitational direction (vertical direction) is defined as 0 ° or 180 °, the polarization filter 110 is rotated clockwise in the figure. The rotation angle is shown as a positive value. The polarizing filter 110 has a polarization characteristic in which the polarization effect when the rotation angle position is θ ° and the polarization effect when the rotation angle position is θ + 180 ° are the same. As indicated by points X1 and X2, when the rotation angle position of the polarizing filter 110 is 0 ° or 180 °, the light transmittance is maximum, and the signal output of the subject luminous flux incident on the CCD 103 is the maximum value (maximum amplitude value). ). As indicated by points Y 1, Y 2, Y 3, and Y 4, when the rotation angle position of the polarizing filter 110 is 45 °, 135 °, 225 °, or 315 °, the light transmittance is intermediate, and the subject luminous flux incident on the CCD 103 Signal output indicates an intermediate value (intermediate amplitude value). As indicated by points Z 1 and Z 2, when the rotation angle position of the polarizing filter 110 is 90 ° or 270 °, the light transmittance is minimum, and the signal output of the subject luminous flux incident on the CCD 103 is the minimum value (minimum amplitude value). ).

  The digital camera 100 includes a CPU (rotation drive control unit) 120, an A / D converter 104, a signal processing circuit 105, an image recording unit 106, an LCD monitor 107, and a photographing operation unit 108. The CPU 120 comprehensively controls each component of the digital camera 100. The A / D converter 104 converts the subject image formed on the imaging surface 103 a of the CCD 103 from an analog signal to a digital signal and sends the signal to the signal processing circuit 105. The signal processing circuit 105 performs predetermined image processing on the digital signal sent from the A / D converter 104 to obtain an image signal. This image signal is recorded in the image recording unit 106 via the CPU 120 and displayed on the LCD monitor 107. The photographing operation unit 108 performs photographing operations such as a power lever, a zoom switch, a shutter button, and a mode dial.

  The digital camera 100 includes a horizontal level (posture acquisition unit) 130 that acquires the posture of the camera body 200. As the horizontal level 130, for example, an electronic level built in the camera body 200, or an attachment type electronic level or liquid level attached to an accessory shoe of the camera body 200 can be used. The aspect is not ask | required.

  As shown in FIG. 3, the horizontal level 130 detects (acquires) a rotational angle position around an axis P that is parallel to the photographing optical axis Z and that is based on the horizontal direction of the camera body 200. The level level 130 outputs the detected (acquired) rotation angle position of the camera body 200 to the CPU 120. The CPU 120 monitors the posture (rotational angle position) of the camera body 200 in real time, and further stores changes in the posture (rotational angle position) of the camera body 200 in a memory (not shown). Here, in order to facilitate understanding of the present invention, a state in which the camera body 200 is held sideways and the photographing optical axis Z is oriented in the horizontal direction (horizontal composition), the rotation angle position of the camera body 200 is 0 °. It is defined as the reference posture position. The rotation angle when the camera body 200 is rotated clockwise as viewed from the front from this reference posture position is indicated by a positive value.

  The digital camera 100 includes a filter rotation switch 140 that performs an input operation for rotating the polarizing filter 110 at the insertion position about the photographing optical axis Z. In a state where the filter rotation switch 140 is pressed, a filter rotation instruction signal is input from the filter rotation switch 140 to the CPU 120, and the CPU 120 rotates the polarization filter 110 via the polarization filter driving unit 111. On the other hand, when the filter rotation switch 140 is not pressed, no filter rotation instruction signal is input from the filter rotation switch 140 to the CPU 120, and the CPU 120 does not drive the polarization filter 110 to rotate by the polarization filter drive unit 111. Thus, the photographer adjusts the polarization effect obtained by the polarization filter 110 by operating the filter rotation switch 140 while changing the rotation angle position of the polarization filter 110 while viewing the live view image displayed on the LCD monitor 107. can do.

  The stepping motor of the polarizing filter driving unit 111 that rotationally drives the polarizing filter 110 is provided with a Hall IC, and the CPU 120 reads the output of the Hall IC (varies according to the rotation angle of the rotor of the stepping motor). Thus, the rotational angle position of the polarizing filter 110 is detected.

  The digital camera 100 includes a polarization effect lock switch (polarization effect lock unit, photographing effect lock unit) 150. The polarization effect lock switch 150 performs an input operation when a desired polarization effect by the polarization filter 110 is determined by operating the filter rotation switch 140, and the gravitational direction of the polarization filter 110 at the time when the input operation is performed. The rotation angle position with respect to (vertical direction) is stored, and a function for maintaining the polarization effect by the polarization filter 110 is provided.

  More specifically, when the input operation of the polarization effect lock switch 150 is performed, the CPU 120 determines the polarization filter at the time when the input operation of the polarization effect lock switch 150 is performed from the relative rotation position of the polarization filter 110 with respect to the camera body 200. The rotation angle position with respect to the gravitational direction (vertical direction) of 110 is stored. For example, when the rotation angle position of the camera body 200 is the reference posture position of 0 °, the CPU 120 uses the gravitational direction (vertical direction) of the polarizing filter 110 as a reference, as shown in FIGS. Is stored.

  When the input operation of the polarization effect lock switch 150 is not performed, the CPU (rotation drive control unit) 120 rotates the polarization filter 110 via the polarization filter drive unit 111 according to the operation of the filter rotation switch 140. To do. This rotational drive control is the same as that of the conventional product.

  On the other hand, the CPU (rotation drive control unit) 120 does not accept the operation of the filter rotation switch 140 after the input operation of the polarization effect lock switch 150 is performed, and the posture of the camera body 200 input from the horizontal level 130. The polarization filter 110 is rotationally driven via the polarization filter driving unit 111 with special control content corresponding to (rotational angle position).

  That is, when the rotation angle position of the camera body 200 input from the horizontal level 130 is changed after the input operation of the shooting effect lock switch 150 is performed, the CPU (rotation drive control unit) 120 changes the rotation angle position. By rotating and driving the polarizing filter 110 via the polarizing filter driving unit 111 so as to cancel out, the rotational angular position of the polarizing filter 110 with respect to the gravitational direction (vertical direction) at the time when the input operation of the photographing effect lock switch 150 is performed. To maintain.

  For example, as shown in FIG. 4, when the input operation of the shooting effect lock switch 150 is performed, the rotation angle position of the camera body 200 is the reference posture position (horizontal composition) at 0 °, and the shooting effect lock switch 150 Assume that the rotation angle position of the camera body 200 changes to 90 ° (vertical composition) after the input operation is performed. In this case, the CPU (rotation drive control unit) 120 causes the polarization filter 110 to be −90 ° via the polarization filter drive unit 111 in conjunction with the rotation angle position of the camera body 200 changing from 0 ° to 90 °. By rotationally driving, the rotation angle position of the polarizing filter 110 with respect to the gravitational direction (vertical direction) at the time when the input operation of the photographing effect lock switch 150 is performed is maintained. Thereby, before and after the posture (rotation angle position) of the camera body 200 is changed, the underwater fish can be clearly photographed by removing the water surface reflection by the polarization effect of the polarizing filter 110.

  Next, a rotation drive control method for the polarizing filter 110 according to the present invention will be described with reference to the flowchart of FIG.

  First, the CPU (rotation drive control unit) 120 determines whether or not the polarizing filter 110 is at an insertion position located on the photographing optical axis Z (in the photographing optical path) (step S1). When the CPU 120 determines that the polarizing filter 110 is not in the insertion position (step S1: NO), the CPU 120 does not rotate the polarizing filter 110 by the polarizing filter driving unit 111.

  When the polarizing filter 110 is in the insertion position (step S1: YES), the CPU 120 rotates the polarizing filter 110 via the polarizing filter driving unit 111 in accordance with an input operation of the filter rotation switch 140 by the photographer. Thus, the polarization effect obtained by the polarization filter 110 is adjusted (step S2).

  Next, the CPU 120 determines whether or not an input operation of the polarization effect lock switch 150 has been performed (step S3). When the CPU 120 determines that the input operation of the polarization effect lock switch 150 is not performed (step S3: NO), the polarization filter driving unit 111 continues the polarization filter 110 according to the input operation of the filter rotation switch 140. The rotation is driven (step S2).

  On the other hand, when the CPU 120 determines that the input operation of the polarization effect lock switch 150 has been performed (step S3: YES), the input operation of the polarization effect lock switch 150 detected by the horizontal level 130 from a memory (not shown) is performed. The rotation angle α ° about the axis P parallel to the photographing optical axis Z is obtained (extracted) with reference to the horizontal direction of the camera body 200 at the time of being performed (step S4). The CPU 120 disables the input operation of the filter rotation switch 140 after the input operation of the polarization effect lock switch 150 is performed.

  Even after the input operation of the polarization effect lock switch 150 is performed, the CPU 120 is input in real time from the horizontal level 130 and is parallel to the photographing optical axis Z with respect to the horizontal direction of the camera body 200 at the present time. A rotation angle β ° of the polarizing filter 110 about the correct axis P is acquired (step S5).

  The CPU 120 compares the rotation angle α ° of the camera body 200 at the time when the input operation of the polarization effect lock switch 150 is performed with the current rotation angle β ° of the camera body 200, so that the polarization effect lock switch 150. It is determined whether or not the posture (rotational angle position) of the camera body 200 has changed after the input operation has been performed (step S6).

  When the CPU 120 determines that the rotation angle position of the camera body 200 has not changed (α ° = β °) after the input operation of the polarization effect lock switch 150 is performed (step S6: NO), the polarization filter drive The polarization filter 110 is not rotationally driven by the unit 111 (step S7).

  On the other hand, when the CPU 120 determines that the rotational angle position of the camera body 200 has changed after the input operation of the polarization effect lock switch 150 is performed (α ° ≠ β °) (step S6: YES), this rotational angle. Polarization polarization at the time when the input operation of the imaging effect lock switch 150 is performed by rotationally driving the polarization filter 110 via the polarization filter drive unit 111 by a rotation drive amount (α ° −β °) that cancels the change in position. The rotation angle position of the filter 110 with respect to the gravitational direction (vertical direction) is maintained (step S8).

  The CPU 120 monitors the change in the rotation angle position of the polarization filter 110 by reading the output of the Hall IC provided in the stepping motor of the polarization filter drive unit 111, and changes the rotation angle position of the polarization filter 110. May be processed to confirm whether or not the value coincides with the rotational drive amount (α ° −β °) for canceling the change in the rotational angle position of the camera body 200.

  As described above, in the present embodiment, when the rotation of the body main body 200 acquired by the posture acquisition unit 130 is changed after the rotation drive control unit 120 performs the input operation of the photographing effect lock unit 150, the rotation drive unit 111 is changed. The rotational optical element 110 is rotationally driven via the, and the rotational angle position of the rotational optical element 110 with respect to the gravitational direction at the time when the input operation of the imaging effect lock unit 150 is performed is maintained. For this reason, after adjusting the rotation angle position of the rotary optical element 110 with the posture of the body main body 200 fixed and determining a desired photographing effect, the rotary optical element even if the posture of the body main body 200 changes. The desired shooting effect obtained by 110 can be maintained.

  In the above embodiment, the case where a linear polarizing filter is used as the polarizing filter 110 has been described as an example. However, a circular polarizing filter can also be used. The circular polarization filter has a polarization characteristic in which the polarization effect when the rotation angle position is θ ° and the polarization effect when the rotation angle position is θ + 90 ° are the same.

  In the above embodiment, the case where the polarizing filter 110 is used as the rotating optical element has been described as an example. However, the rotating optical element only needs to provide a different imaging effect by rotating around the optical axis on the optical path of the imaging optical system. For example, a cross filter, a multi-surface effect filter, an ND filter can be used in addition to the polarizing filter. It is also possible to use a half ND filter or the like.

  In the above embodiment, the case where the horizontal level 130 is used as the posture acquisition unit that acquires the posture (rotational angle position) of the camera body 200 has been described as an example. For example, various sensors such as an acceleration sensor and an angular velocity sensor are used. Alternatively, the posture acquisition unit can be configured by a combination thereof.

  In the above embodiment, the case where the horizontal level 130 is used as the posture acquisition unit that acquires the posture (rotational angle position) of the camera body 200 has been described as an example. However, the CPU 120 obtains the posture (rotational angle position) of the camera body 200 by detecting the posture (rotational angle position) of the camera body 200 outside the digital camera 100 and transmitting it to the CPU 120 (wireless or prioritized). It is also possible to do. In this aspect, the CPU 120 constitutes an attitude acquisition unit.

  In the above embodiment, the case where the photographer operates the filter rotation switch 140 to adjust the rotation angle position of the polarization filter 110 to determine the polarization effect obtained by the polarization filter 110 (manual adjustment) will be described as an example. did. However, it is also possible for the CPU 120 to automatically adjust the rotation angle position of the polarization filter 110 by controlling the rotation of the polarization filter 110 via the polarization filter drive unit 111 based on some index such as subject brightness. .

  In the above embodiment, the case where the polarization effect lock switch 150 is activated by performing an input operation of the polarization effect lock switch 150 provided as a component different from the photographing operation unit 108 and the like has been described as an example. However, various changes can be made to the manner in which the polarization effect lock switch 150 is provided and the trigger. For example, the function of the polarization effect lock switch 150 can be provided as one function of the shutter button of the photographing operation unit 108, and the polarization effect lock switch 150 can be activated when the shutter button is half-released. Alternatively, the polarization effect lock switch 150 can be activated by selecting from a touch panel type menu using the LCD monitor 107.

100 Digital camera (photographing device)
101 Fixed lens (shooting optical system)
102 Focusing lens (photographing optical system)
102a Focusing lens driving unit 103 CCD (imaging optical system, image sensor)
103a Imaging surface 104 A / D converter 105 Signal processing circuit 106 Image recording unit 107 LCD monitor 108 Shooting operation unit 110 Polarizing filter (rotating optical element)
111 Polarizing filter drive unit (rotation drive unit)
120 CPU (rotation drive control unit, posture acquisition unit)
130 Horizontal level (posture acquisition unit)
140 Filter rotation switch 150 Polarization effect lock switch (polarization effect lock unit, photographing effect lock unit)
200 Camera body (body body)
Z Shooting optical axis P Camera body rotation axis

Claims (8)

The body body includes a photographing optical system, a rotating optical element that gives different photographing effects by rotating around an optical axis on an optical path of the photographing optical system, and a rotation driving unit that rotationally drives the rotating optical element. In the shooting device
A posture acquisition unit that acquires the posture of the body body;
A shooting effect lock unit for performing an input operation for storing a rotational angle position of the rotating optical element with respect to a gravitational direction;
When the posture of the body main body acquired by the posture acquisition unit is changed after the input operation of the shooting effect lock unit is performed, the rotation optical element is rotationally driven via the rotation driving unit, and the shooting effect is acquired. A rotation drive control unit that maintains a rotational angle position with respect to the direction of gravity of the rotating optical element at the time when an input operation of the lock unit is performed;
An imaging apparatus comprising: The imaging device according to claim 1,
The posture acquisition unit acquires a rotational angle position around an axis parallel to the optical axis with respect to a horizontal direction of the body body;
When the rotation angle position of the body main body acquired by the posture acquisition unit changes after the input operation of the shooting effect lock unit is performed, the rotation drive control unit cancels the change in the rotation angle position. An imaging apparatus that rotationally drives the rotating optical element via the rotation driving unit. The imaging device according to claim 2,
The posture acquisition unit is a photographing apparatus including a horizontal level that detects a rotational angle position around an axis parallel to the optical axis with respect to a horizontal direction of the body main body. In the imaging device according to any one of claims 1 to 3,
A filter rotation switch for performing an input operation for rotationally driving the rotary optical element via the rotation drive unit;
The rotational drive control unit enables the input operation of the filter rotation switch when the input operation of the shooting effect lock unit is not performed, and after the input operation of the shooting effect lock unit is performed, An imaging device that disables the input operation of the filter rotation switch. The photographing apparatus according to any one of claims 1 to 4,
An imaging apparatus further comprising an insertion / removal drive mechanism that drives the rotation optical element to be inserted / removed between an insertion position located on an optical path of the imaging optical system and a separation position separated from the optical path of the imaging optical system. The photographing apparatus according to any one of claims 1 to 5,
The rotating optical element is a photographing apparatus including a polarizing filter that changes a polarization state of a light beam passing through the photographing optical system. The body body includes a photographing optical system, a rotating optical element that gives different photographing effects by rotating around an optical axis on an optical path of the photographing optical system, and a rotation driving unit that rotationally drives the rotating optical element. In the photographing apparatus, a method for rotationally driving the rotating optical element,
Obtaining the posture of the body body;
Performing an input operation for storing a rotational angle position of the rotating optical element with respect to a gravitational direction;
When the posture of the body main body obtained after performing the input operation is changed, the rotational optical element is rotationally driven via the rotational drive unit, and the gravitational direction of the rotary optical element at the time when the input operation is performed Maintaining a rotational angular position relative to
A rotational drive control method for a rotary optical element, comprising: In the rotation drive control method of the rotation optical element according to claim 7,
In the obtaining step, a rotational angle position about an axis parallel to the optical axis with respect to a horizontal direction of the body body is obtained,
In the maintaining step, when the rotation angle position of the body main body obtained after the input operation is changed, the rotation optical element is moved via the rotation drive unit so as to cancel the change in the rotation angle position. A rotational drive control method for a rotational optical element that is rotationally driven.

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