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US 8,947,583 B2Granted
Image pickup apparatus and control method thereof
AssigneeCanon Kabushiki Kaisha
InventorNaoyuki Nakagawara
Life of this patent
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Abstract
A controller configured to move a lens to reduce a defocus amount of a focus area selected from among a plurality of focus areas, wherein the controller repeats a detection of a defocus amount while moving the lens, and performs a selection of a focus area by using face position information, which is obtained and output by the first detection unit after detection of the defocus amount is repeated a plurality of times.
Claims20
An image pickup apparatus comprising:
- a first detection unit arranged to detect a position of an object from a signal obtained through photoelectric conversion by a first sensor;
- a second detection unit arranged to detect a defocus amount of a plurality of focus areas from a signal acquired from photoelectric conversion by a second sensor;
- and
- a controller configured to control to move a lens in accordance with a defocus amount detected by the second detection unit to reduce a defocus amount of a focus area selected from among the plurality of focus areas,
- wherein the controller controls the first detection unit to detect the position of the object to select a focus area based on a detected position of the object, and
- wherein the controller performs the selection of the focus area by controlling the first detection unit in a case where the second detection unit detects the defocus amount which is smaller than a first amount.
3 more elements
A control method of an image pickup apparatus, comprising:
- a first detection step of detecting a position of an object from a signal obtained through photoelectric conversion by a first sensor;
- a second detection step of detecting a defocus amount of a plurality of focus areas from a signal acquired from photoelectric conversion by a second sensor;
- and
- a control step of controlling to move a lens in accordance with a defocus amount detected in the second detection step to reduce a defocus amount of a focus area selected from among the plurality of focus areas,
- wherein the control step controls the first detection step to detect the position of the object to select a focus area based on a detected position of the object, and
- wherein the control step performs the selection of the focus area by controlling the first detection step in a case where the second detection step detects the defocus amount which is smaller than a first amount.
3 more elements
An image pickup apparatus comprising:
- a first detection unit arranged to detect an object image from a signal obtained through photoelectric conversion by a first sensor;
- a second detection unit arranged to detect a defocus amount of a plurality of focus areas from a signal acquired from photoelectric conversion by a second sensor;
- and
- a controller configured to control to move a lens in accordance with a defocus amount detected by the second detection unit to reduce a defocus amount of a focus area selected from among the plurality of focus areas,
- wherein the controller controls the first detection unit to detect the position of the object image to select a focus area based on a detected object image, and
- wherein the controller performs the selection of the focus area by controlling the first detection unit in a case where the second detection unit detects the defocus amount which is smaller than a first amount which is easier to detect the object image than a second amount greater than the first amount.
3 more elements
A control method of an image pickup apparatus, comprising:
- a first detection step of detecting an object image from a signal obtained through photoelectric conversion by a first sensor;
- a second detection step of detecting a defocus amount of a plurality of focus areas from a signal acquired from photoelectric conversion by a second sensor;
- and
- a control step of controlling to move a lens in accordance with a defocus amount detected in the second detection step to reduce a defocus amount of a focus area selected from among the plurality of focus areas,
- wherein the control step controls the first detection step to detect the object image to select a focus area based on a detected object image, and
- wherein the control step performs the selection of the focus area by controlling the first detection step in a case where the second detection step detects the defocus amount which is smaller than a first amount which is easier to detect the object image than a second amount greater than the first amount.
3 more elements
Dependencies are inferred from the claim text.