Abstract: A control apparatus (204, 212) includes a calculator (204) that calculates a defocus amount based on a first signal and a second signal that correspond to light beams passing through different pupil regions of an image capturing optical system (101, 102, 103) from each other, and a focus adjuster (212) that performs focus adjusting operation based on the defocus amount, and the focus adjuster is configured to change a detection property of the first signal and the second signal depending on a type of the focus adjusting operation.
Abstract: The imaging apparatus has a plurality of pixels each of which has a plurality of photoelectric conversion units; generates a plurality of first combined signals obtained by combining signals based on electric charges of photoelectric conversion units in one side with each other, and a plurality of second signals obtained by combining signals based on electric charges of the plurality of photoelectric conversion units with each other; and outputs a part of the first combined signals out of the plurality of first combined signals.