A camera includes an imaging unit that generates image data, an inserting-image setting unit that sets an inserting image to be inserted into an image of the image data, a first detecting unit that detects a main subject area in a subject image, a second detecting unit that detects a background area in the subject image based on the main subject area, an inserting-area selecting unit that selects an inserting area into which an inserting image is inserted from the background area, and a magnification determining unit that determines a magnification for enlargement or reduction of the inserting image in accordance with a size of the inserting area and a size of the inserting image, and thereby inserts an inserting image of an appropriate size.