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Title:
An imaging device, its control method, and a control program
Document Type and Number:
Japanese Patent JP6249825
Kind Code:
B2
Abstract:
An image pickup apparatus that is capable of performing a focusing control with sufficient accuracy without restricting a settable range of a focus detection area. An image pickup device has pixels each of which has sub-pixels that receive light beams passing through different pupil areas. A correlation operation area including a focus detection area and a shift area is set in an image indicated by an output from the image pickup device. A defocus amount is calculated in response to a correlation amount found by applying a shift process to image signals from the sub-pixels. If the focus detection area is set at a position where the correlation operation area is set with a default width, the shift area is set with a predetermined width. Otherwise the shift area is set with a narrower width and the correlation operation area is set with a width narrower than the default width.

Inventors:
Junichi Saito
Application Number:
JP2014042635A
Publication Date:
December 20, 2017
Filing Date:
March 05, 2014
Export Citation:
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Assignee:
Canon Inc
International Classes:
G02B7/28; G02B7/34; G03B13/36; H04N5/232
Domestic Patent References:
JP58024105A
Attorney, Agent or Firm:
Another role Shigehisa