A photoelectric conversion apparatus of the present invention includes: a plurality of pixel arrays having different colors and arrayed in the subsidiary scanning direction when the photoelectric conversion apparatus scans a document relatively in the subsidiary scanning direction, each of the plurality of pixel arrays including a plurality of pixels that perform photoelectric conversion; and a pulse controlling unit which controls pulse positions of control pulses that control operations of the pixels, wherein the pulse controlling unit controls the pulse positions of the control pulses for the pixel arrays of each color, according to color offset quantities in the subsidiary scanning direction of the pixel arrays of each color.