Patent ID: 8988595
Filing Date: 2015-03-24
Classification: H04N

Abstract:
1. A focus detection apparatus which performs focus detection by a phase difference method using an image pickup element including a plurality of first pixels and a plurality of second pixels, each pair of the first and second pixels sharing one microlens, the focus detection apparatus comprising: a correlation data calculator configured to calculate correlation data between pixel data obtained from the plurality of first pixels and pixel data obtained from the plurality of second pixels in a plurality of ranges of image data obtained from the image pickup element; a detector configured to detect a saturated pixel having a level of at least a predetermined value in each of the plurality of ranges; an adding processor configured to perform addition processing of the correlation data calculated in each of the plurality of ranges, based on a detection result of the saturated pixel by the detector; and a defocus amount calculator configured to calculate a defocus amount based on a result of the addition processing, wherein the adding processor performs the addition processing using correlation data obtained from the plurality of ranges in which a number of the saturated pixels is less than a predetermined number.