Imaging apparatus and control method of the same
AssigneeCanon Kabushiki Kaisha
InventorsNobuhiro Shibata, Hiroaki Kurisu, Teruhiko Ueyama
Life of this patent
Estimating the term…
Abstract
An imaging apparatus includes a storage unit configured to store beforehand a focus position serving as a reference for a predetermined subject, and a unit configured to drive a focus lens at a position away by a predetermined depth from the focus position serving as a reference that is stored, and calculate a defocus amount.
Claims17
An imaging apparatus comprising:
- an imaging unit having a plurality of pixels capable of performing photoelectric conversion of light fluxes that have passed through different pupil regions of an imaging optical system including a focus lens, and outputting a pair of image signals;
- a calculating unit configured to calculate a defocus amount based on an output signal from the pixels;
- a control unit configured to control driving of the focus lens and perform focus control based on the calculation results of the calculating unit;
- and
- a storage unit configured to store a focus position beforehand, the focus position stored beforehand serving as a reference focus position for a predetermined subject,
- wherein the calculating unit performs focus detection calculation in a state where the focus lens is at a position away from the reference focus position stored in the storage unit by a predetermined depth.
A control method of an imaging apparatus having a plurality of pixels capable of performing photoelectric conversion of light fluxes that have passed through different pupil regions of an imaging optical system including a focus lens, and outputting a pair of image signals, the control method comprising:
- obtaining the image signals by calculation, performing phase-difference focus detection computation, and calculating a defocus amount based on an output signal from the pixels;
- controlling driving of the focus lens and performing focus control based on the calculation results of the calculating unit,
- wherein focus detection computation is performed in a state where the focus lens is at a position away by a predetermined depth from a focus position serving as a reference that is stored beforehand.
Dependencies are inferred from the claim text.