1. A photographing apparatus comprising: a photographing module which simultaneously photographs a range including a main subject located on a front side, and at least an eye part of a photographer located on a rear side; an image processor which acquires image data by executing an image process on an output signal of the photographing module; a line-of-sight direction determination module which determines a line-of-sight direction of the photographer by comparing with the reference line-of-sight direction of the photographer in the image data acquired by the image processor; a main subject determination module which determines the main subject to be photographed by the photographer, based on the line-of-sight direction determined by the line-of-sight direction determination module; and an emphasis processor which executes an emphasis process on the main subject determined by the main subject determination module.