The image of a subject is sensed, the image of the subject is displayed on the display screen of a digital still camera and the image of a face is detected in the image of the subject. The image of the subject is shifted in such a manner that the center of the detected face image becomes the center of the display screen, and the image is enlarged and displayed on the display screen. Since the image of the face is displayed in enlarged form, it becomes easier to check the face even if the display screen is small in size.