Image pickup apparatus with image stabilization that reduces positional shift in the image signal, control method of the same, and storage medium
An image pickup apparatus includes an image sensor configured to photoelectrically convert an optical image formed by an imaging optical system and to output an image signal, and a processor configured to control a first correction unit and a second correction unit for image stabilization. The first correction unit includes a first movable part, and a first rolling member, via which the first movable part is movable in a plane orthogonal to an optical axis of the imaging optical system. The processor is configured to control the first correction unit to perform a first operation of the first movable part that moves the first rolling member to a first position apart from an end of a movable range of the first rolling member, and to control the second correction unit to perform a second operation that reduces a positional shift in the image signal caused by the first operation.
1 . An image pickup apparatus comprising:
an image sensor configured to photoelectrically convert an optical image formed by an imaging optical system and to output an image signal; and
a processor configured to control a first correction unit and a second correction unit for image stabilization,
wherein the first correction unit includes a first movable part, and a first rolling member, via which the first movable part is movable in a plane orthogonal to an optical axis of the imaging optical system,
wherein the processor is configured to control the first correction unit to perform a first operation of the first movable part that moves the first rolling member to a first position apart from an end of a movable range of the first rolling member, and to control the second correction unit to perform a second operation that reduces a positional shift in the image signal caused by the first operation,
wherein the first correction unit moves the image sensor disposed at the first movable part or a correction lens included in the imaging optical system, and the second correction unit swings a camera unit including the imaging optical system and the image sensor, and
wherein the processor does not perform the second operation in a case where a display unit is integrated with the camera unit.
2 . The image pickup apparatus according to claim 1 , further comprising a display unit configured to display the image signal,
wherein the processor is configured to cause the display unit to display the image signal in which the positional shift has been reduced while the second correction unit is performing the second operation.
3 . The image pickup apparatus according to claim 1 , wherein the second correction unit performs the second operation while the first correction unit is performing the first operation.
4 . The image pickup apparatus according to claim 1 , wherein the first position is a center of the movable range of the first movable part.
5 . The image pickup apparatus according to claim 1 , wherein the processor is configured to perform the first correction unit and the second correction unit so as to perform the first operation and the second operation as an initialization operation when the image pickup apparatus is powered on.
6 . The image pickup apparatus according to claim 1 , wherein the first correction unit moves the image sensor disposed at the first movable part, and
wherein the second correction unit moves a correction lens included in the imaging optical system.
7 . The image pickup apparatus according to claim 6 , wherein the second correction unit includes a second movable part, and a second rolling member, via which the second movable part is movable in the plane orthogonal to the optical axis, and
wherein the second operation moves the second rolling member to a second position apart from an end of a movable range of the second rolling member.
8 . The image pickup apparatus according to claim 1 , further comprising a third correction unit configured to electronically clip a partial region in the image signal for the image stabilization,
wherein the processor is configured to control the third correction unit to reduce the positional shift in the image signal caused by insufficiency of the second operation of the second correction unit.
9 . The image pickup apparatus according to claim 1 , wherein the first correction unit moves the image sensor disposed at the first movable part or a correction lens included in the imaging optical system, and
wherein the second correction unit electronically clips out a partial region in the image signal for the image stabilization.
10 . The image pickup apparatus according to claim 1 , wherein the processor is configured to perform the second operation in a case where a display unit is separate from the camera unit.
11 . The image pickup apparatus according to claim 1 , wherein the processor is configured to control at least one of the first correction unit and the second correction unit so as to correct image blur caused by shake applied to the image pickup apparatus during the first operation and the second operation.
12 . A control method of an image pickup apparatus, the control method comprising:
a first step of photoelectrically converting an optical image formed by an imaging optical system and of outputting an image signal; and
a second step of controlling a first correction unit and a second correction unit for image stabilization,
wherein the first correction unit includes a first movable part, and a first rolling member, via which the first movable part is movable in a plane orthogonal to an optical axis of the imaging optical system,
wherein the second step controls the first correction unit to perform a first operation of the first movable part that moves the first rolling member to a first position apart from an end of a movable range of the first rolling member, and controls the second correction unit to perform a second operation that reduces a positional shift in the image signal caused by the first operation,
wherein the first correction unit moves an image sensor disposed at the first movable part or a correction lens included in the imaging optical system, and the second correction unit swings a camera unit including the imaging optical system and the image sensor, and
wherein the second operation is not performed in a case where a display unit is integrated with the camera unit.
13 . A non-transitory computer-readable storage medium storing a program for causing a computer to execute the control method according to claim 12 .