A digital camera performs first predetermined image processing on digital image data representing a rectangular primary area in an object image acquired through photographing, and performs second predetermined image processing on digital image data representing secondary areas other than the primary area of the object image. The second image processing has an effect such that a compression rate for the secondary areas becomes higher than a compression rate for the primary area in the digital image data when the digital image data is compressed. After the digital image data subjected to these image processings has been compressed, the digital image data is recorded in a recording medium. In this manner, a data amount of the digital image data recorded through photographing can be effectively reduced.