Imaging device and imaging control method capable of preventing camera shake
There are provided an imaging device and an imaging control method that can achieve both subject-following performance during a shake-correcting operation and a reduction in the size of a lens. The object is achieved by an imaging device including a shake detection unit that continuously detects a shake, a correction unit that corrects a shake of a subject image by moving an imaging lens and an imaging element relative to each other in a direction orthogonal to a direction of an optical axis of an incidence ray according to the detected shake, and a control unit that limits a movable range of relative movement to the inside of a rectangle included in a circle, which is the maximum movable range, in a case where imaging is performed at a certain frame rate.
1. An imaging device comprising:
an imaging unit that includes an imaging element converting a received subject image into an image signal and an imaging lens allowing an incidence ray, which is incident from a subject, to be incident on the imaging element, at least one of the imaging lens or the imaging element being movable in a direction orthogonal to a direction of an optical axis of the incidence ray, and a maximum of a movable range of relative movement of the imaging lens and the imaging element being a circle;
a shake detector that continuously detects a shake of the imaging unit; and
a processor configured to correct a shake of the subject image by moving at least one of the imaging lens or the imaging element relative to one another according to the detected shake;
wherein the processor is further configured to limit the movable range of the relative movement, in which the shake of the subject image is corrected, to the inside of a rectangle included in the circle in a case where imaging is performed at a frame rate by the imaging unit.
2. The imaging device according to claim 1 ,
wherein the processor is configured to set the movable range of the relative movement to the inside of the circle in a case where a static image is to be taken.
3. The imaging device according to claim 1 , further comprising:
a display unit that displays a live view image allowing a user to check the subject image,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where the live view image is to be taken.
4. The imaging device according to claim 2 , further comprising:
a display unit that displays a live view image allowing a user to check the subject image,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where the live view image is to be taken.
5. The imaging device according to claim 1 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where a video is to be taken.
6. The imaging device according to claim 2 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where a video is to be taken.
7. The imaging device according to claim 3 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where a video is to be taken.
8. The imaging device according to claim 4 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where a video is to be taken.
9. The imaging device according to claim 1 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where continuous imaging for continuously taking static images is to be performed.
10. The imaging device according to claim 2 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where continuous imaging for continuously taking static images is to be performed.
11. The imaging device according to claim 3 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where continuous imaging for continuously taking static images is to be performed.
12. The imaging device according to claim 4 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where continuous imaging for continuously taking static images is to be performed.
13. The imaging device according to claim 5 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle in a case where continuous imaging for continuously taking static images is to be performed.
14. The imaging device according to claim 1 ,
wherein the rectangle is inscribed in the circle.
15. The imaging device according to claim 1 ,
wherein the rectangle is a square.
16. The imaging device according to claim 1 ,
wherein the rectangle has sides parallel to a horizontal direction and a vertical direction of an imaging field of view of the imaging unit, respectively.
17. The imaging device according to claim 1 ,
wherein the processor is configured to limit the movable range of the relative movement to the inside of the rectangle after relative positions of the imaging lens and the imaging element enter the rectangle.
18. The imaging device according to claim 1 ,
wherein the processor is configured to move the imaging lens.
19. The imaging device according to claim 1 ,
wherein the processor is configured to move the imaging element.
20. An imaging control method comprising:
an imaging step of imaging a subject by an imaging unit that includes an imaging element converting a received subject image into an image signal and an imaging lens allowing an incidence ray, which is incident from the subject, to be incident on the imaging element, at least one of the imaging lens or the imaging element being movable in a direction orthogonal to a direction of an optical axis of the incidence ray, and a maximum of a movable range of relative movement of the imaging lens and the imaging element being a circle;
a shake detection step of continuously detecting a shake of the imaging unit; and
a correction step of correcting a shake of the subject image by moving at least one of the imaging lens or the imaging element relative to one another according to the detected shake,
wherein the movable range of the relative movement, in which the shake of the subject image is corrected, is limited to the inside of a rectangle included in the circle in a case where imaging is performed at a frame rate in the imaging step.