An image capture apparatus includes an image sensor, a determination unit which determines one image capturing mode, a driving unit which drives the image sensor by different driving methods in the respective image capturing modes, and a control unit which controls the operation of the driving unit. The image sensor includes a plurality of two-dimensionally arrayed pixels, a predetermined number of vertical output lines arranged for each array of pixels, and a holding memory which holds pixel signals from pixels on rows. The control unit drives the image sensor in the first power save mode when a horizontal transfer period is not less than twice a vertical transfer period, and drives the image sensor in the second power save mode when the vertical transfer period is not less than twice the horizontal transfer period.