1. A digital photographing apparatus comprising: an imaging device that generates an image signal by capturing image light; a storage unit that stores a template comprising a background area and a composite area that shows at least a part of an image according to the image signal; an image changing unit that changes orientations of the template and the image; an image composing unit that composes the image and the template of which orientations are changed; and a display unit that displays the composed image, wherein the image changing unit determines orientations to be changed of the template and the image according to a rotation amount of the imaging device with respect to an optical axis of the image light and an orientation in which an imaging surface of the imaging device faces.