Focus adjustment apparatus, focus adjustment method, storage medium storing focus adjustment program, and imaging apparatus
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United States of America Patent
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Oct 4, 2016
Grant Date -
Nov 13, 2014
app pub date -
Apr 28, 2014
filing date -
May 8, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A focus adjustment apparatus has: an imaging unit that is capable of outputting a pair of focus detection signals by photoelectrically converting rays of light which pass through different pupil areas of a focusing optical system; a focus detection unit for detecting a first defocus amount by executing a first filter processing to the pair of focus detection signals; a determination unit for determining a focus state on the basis of the first defocus amount; an evaluation value generation unit for generating an evaluation value of the first defocus amount by executing a second filter processing to the pair of focus detection signals in accordance with a result of the determination; and a control unit for evaluating the result of the determination about the focus state on the basis of the evaluation value and controlling a focus adjustment in accordance with a result of the evaluation.
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