When an operation mode of a digital camera is the manual focus control mode and an auxiliary function is performed, a microcomputer serves to set an enlarged image generation region, a signal processing unit implements processing to an image signal of the enlarged image generation region, and a display processing unit generates an image enlarged so as to take a predetermined size from an image signal processed by the signal processing unit to display the enlarged image on a display unit. The microcomputer sets the enlarged image generation region at a position moved manually from a predetermined position.