| 摘要 |
An imaging apparatus executes AF control without affecting a video signal and prevents video signal qualities in an in-focus state from decreasing. An optical path separation unit 2 separates light from a subject into first and second light beams. A first imaging unit 3 generates a first signal using the first beam. A second imaging unit 7 generates a second signal using the second beam. A control unit 14 generates a contrast evaluation value based on the second signal while changing an optical-path length of the second light beam by back-or-fourth moving the AF-purpose imaging unit 7 and detects a maximum contrast evaluation value, and executes focus control over an optical system 1 based on the optical-path length corresponding to the detected value. An imaging-purpose signal generation unit 15 generates an imaging-purpose video signal using only the first signal in an out-of-focus state, and using the first and second signals in an in-focus state.
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