Focusing apparatus and method for controlling the same, and image pickup apparatus
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United States of America Patent
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May 10, 2016
Grant Date -
Oct 9, 2014
app pub date -
Apr 9, 2014
filing date -
Apr 9, 2013
priority date (Note) -
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Abstract
The defocus amount of an imaging optical system is detected based on a pair of image signals that are obtained from an image sensor and are used for phase-difference detection automatic focusing. In a first mode, the drive of a focusing lens is controlled so that the focusing lens is driven at a first speed if the reliability of the pair of image signal is at a first level, and at a second speed lower than the first speed if the reliability of the pair of image signals is at a second level higher than the first level.
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