Image capturing apparatus and method of controlling the same
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United States of America Patent
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Jul 5, 2016
Grant Date -
Nov 5, 2015
app pub date -
Jul 10, 2015
filing date -
Apr 30, 2013
priority date (Note) -
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Abstract
An image capturing apparatus having an image sensor including focus detection pixels capable of outputting a pair of image signals for focus detection determines whether each line of the pixels of the image sensor is an addition/non-addition line that outputs the image signal suitable/unsuitable for detection of a correlation amount, obtains the correlation amount for each addition line based on the pair of image signals, add the obtained correlation amount of the addition line, counts the number of addition lines, obtains a defocus amount based on the added correlation amount, and drives a focus lens based on the defocus amount when a product of an evaluation value representing reliability of the defocus amount and a predetermined standard number of additions is smaller than the product of the number of addition lines and a standard evaluation value representing a predetermined evaluation value.
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