Patent ID: 9742985
Date: 2017-08-22
CPC Classifications: G02B,H04N

Claim:
1. An automatic focus adjustment apparatus comprising: an image sensor configured to generate an image signal by performing a photoelectric conversion on a light flux incident via an image pickup optical system including a focus lens; a first focus detection unit configured to detect defocus information by a phase difference detection; a second focus detection unit configured to detect a focus state based on the image signal; a setting unit configured to set on the image sensor a first range in which the first focus detection unit detects the defocus information and a second range in which the second focus detection unit detects the focus state; and a control unit configured to control driving the focus lens based on the defocus information detected by the first focus detection unit, wherein the setting unit sets the second range such that the second range includes the first range, and wherein, in a case where the focus state in the second range detected by the second focus detection unit is in an in-focus state, the control unit changes a control mode into a predetermined control mode in which the control unit limits the driving of the focus lens according to the defocus information in the first range detected by the first focus detection unit.