1. An imaging apparatus comprising: an imaging portion that takes images of subjects; a first determination portion that, when two taken images taken by the imaging portion are to be synthesized, compares (i) a number of facial images contained in one taken image of the two taken images with (ii) a number of facial images contained in the other taken image of the two taken images, and determines which taken image has a smaller number of facial images; and a synthesizing portion that, after the determination by the first determination portion, extracts a facial image from the taken image of the two taken images determined to have the smaller number of facial images, and synthesizes the extracted facial image with a region of the other taken image of the two taken images where there is no facial image.