Image capture apparatus

An image capture apparatus comprising:

• an image sensor which photoelectrically converts an object image;
• determination unit configured to determine one image capturing mode from a plurality of image capturing modes;
• driving unit configured to drive said image sensor by different driving methods in the respective image capturing modes determined by said determination unit;
• and
• control unit configured to control operation of said driving unit,
• wherein said image sensor includes a plurality of two-dimensionally arrayed pixels, a predetermined number of vertical output lines arranged for each array of pixels, of the plurality of pixels, which are arranged in a vertical direction, and a holding memory which holds pixel signals from pixels, of the plurality of pixels, which are on rows arranged in a horizontal direction, and
• said control unit drives said image sensor in a first power save mode when a horizontal transfer period in which pixel signals stored in the holding memory are sequentially output outside said image sensor is not less than twice a vertical transfer period in which pixel signals from pixels arranged in the horizontal direction are stored in the holding memory via the vertical output line, and drives said image sensor in a second power save mode when the vertical transfer period is not less than twice the horizontal transfer period.