| 摘要 |
The image pickup apparatus includes an image sensor. A first focus controller performs first focus control with a contrast detection method by using a first signal output from the image sensor. A second focus controller detects a focus state of an image-taking optical system with a phase difference detection method by using a second signal output from a focus detection element (image sensor), and performs second focus control based on the detected focus state. A charge accumulation controller causes the image sensor to alternately and repeatedly perform a first charge accumulation operation for producing the first signal and output of the first signal, and causes the focus detection element to perform a second charge accumulation operation for producing the second signal in a period between two consecutive ones of the first charge accumulation operations.
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