Imaging device and focusing control method
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United States of America Patent
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Nov 28, 2017
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Jul 20, 2016
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Feb 13, 2014
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Abstract
The present invention provides an imaging device and a focusing control method capable of performing reliability determination of a phase difference AF at high speed. A phase difference AF processing unit (19) performs a correlation operation with respect to detection signal groups in first pairs P1, and performs a correlation operation with respect to detection signal groups in second pairs P2. A system control unit (11) compares a difference between a first correlation amount M1 which is a minimum correlation amount between the detection signal groups in the first pairs P1, among obtained results of the correlation operation with respect to the first pairs P1 and a second correlation amount M2 which is a minimum correlation amount between the detection signal groups in the second pairs P2, among obtained results of the correlation operation with respect to the second pairs P2 with a threshold value TH, to thereby determine a reliability of a focusing control based on the phase difference AF method.
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