Patent ID: 9609201
Date: 2017-03-28
CPC Classifications: G02B,H04N

Claim:
1. A focus adjustment apparatus comprising: an obtaining unit configured to obtain a plurality of image signals generated by photoelectrically converting object light which passed through different division areas of an exit pupil of an image pickup optical system; a detection unit configured to detect a defocus amount of the image pickup optical system on the basis of the plurality of image signals obtained by the obtaining unit; an area setting unit configured to set a plurality of areas including a predetermined area to be used for a focus adjustment of the image pickup optical system, as areas of the plurality of image signals to be used for detecting the defocus amount; a control unit configured to generate a focus adjustment signal for performing the focus adjustment of the image pickup optical system, on the basis of the defocus amount detected in the predetermined area; and a perspective conflict determination unit configured to determine whether or not a perspective conflict occurs in the predetermined area, according to the defocus amount detected in each area of at least more than two areas set by the area setting unit, wherein in a case where it is determined by the perspective conflict determination unit that the perspective conflict occurs in the predetermined area, the control unit changes the area to be used for the focus adjustment of the image pickup optical system from the predetermined area to any of other areas set by the area setting unit, according to the defocus amount detected from each area.