A mechanism which makes it possible to obtain high-quality images in continuous photographing by reducing the influence of flicker while suppressing reduction of frame speed. An image pickup apparatus includes an image pickup device and an exposure unit configured to perform exposure of the image pickup device in response to a photographing instruction. An AE sensor detects peak timing of flicker. A camera CPU switches between peak synchronous exposure in which exposure operation is performed by making the same synchronous with the peak timing of flicker and normal exposure in which exposure operation is performed without making the same synchronous with the peak timing of flicker. The camera CPU corrects a photographed image obtained by the normal exposure. The camera CPU switches between the peak synchronous exposure and the normal exposure, based on the detected peak timing of flicker.