FIELD: information technology.
SUBSTANCE: device has an image sensor which includes an array of a plurality of image forming pixels and a plurality of focus determining pixels which receive light rays passing through exit pupils of image forming lenses while they are partially shielded, a vertical output line, a vertical summation unit which sums, in the vertical direction of the image sensor, signals from a plurality of pixels, aligned in one column, and a control unit which performs control so that the vertical summation unit is always off when the focus determining pixel is included among pixels having signals to be summed, when summing signals from a plurality of pixels in the vertical direction and reading said signals through the vertical summation unit.
EFFECT: enabling mixing of signals of image forming pixels and focus determining pixels.
7 cl, 32 dwg
