Control apparatus, image capturing apparatus, control method, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorMakoto Yokozeki
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Abstract
A control apparatus includes a focus signal generator (112) which generates a focus signal by using a component of a predetermined frequency band of an image signal and a controller (114) which performs in-focus control based on the focus signal, the controller performs minute drive of reciprocating a focus lens in an optical axis direction in the in-focus control, and the controller changes each of a reciprocation period and the predetermined frequency band depending on a focus state or an image capturing condition in the minute drive.
Claims19
A control apparatus comprising:
- a focus signal generator configured to generate a focus signal by using a component of a predetermined frequency band of an image signal;
- and
- a controller configured to perform in-focus control based on the focus signal,
- wherein the controller is configured to:
- perform minute drive of reciprocating a focus lens in an optical axis direction in the in-focus control, and
- change each of a reciprocation period and the predetermined frequency band depending on a focus state or an image capturing condition in the minute drive.
An image capturing apparatus comprising:
- an image sensor configured to photoelectrically convert an optical image formed via an image capturing optical system including a focus lens to output image data;
- a focus signal generator configured to generate a focus signal by using a component of a predetermined frequency band of an image signal corresponding to the image data;
- and
- a controller configured to perform in-focus control based on the focus signal,
- wherein the controller is configured to:
- perform minute drive of reciprocating a focus lens in an optical axis direction in the in-focus control, and
- change each of a reciprocation period and the predetermined frequency band depending on a focus state or an image capturing condition in the minute drive.
A control method comprising the steps of:
- generating a focus signal by using a component of a predetermined frequency band of an image signal;
- and
- performing in-focus control based on the focus signal,
- wherein performing the in-focus control includes performing minute drive of reciprocating a focus lens in an optical axis direction, and
- wherein performing the minute drive includes changing each of a reciprocation period and the predetermined frequency band depending on a focus state or an image capturing condition.
A non-transitory computer-readable storage medium which stores a program causing a computer to execute a process comprising:
- generating a focus signal by using a component of a predetermined frequency band of an image signal;
- and
- performing in-focus control based on the focus signal,
- wherein performing the in-focus control includes performing minute drive of reciprocating a focus lens in an optical axis direction and
- wherein performing the minute drive includes changing each of a reciprocation period and the predetermined frequency band depending on a focus state or an image capturing condition.
Dependencies are inferred from the claim text.