1. A portable photographing device comprising: an image capturing unit; a projecting unit for projecting an image; and a storing unit for storing an image captured by the image capturing unit, wherein the projecting unit projects any of a first image captured by the image capturing unit, a second image related to the first image, and a third image obtained by synthesizing the first image with the second image as a projection image into a region which is different from an image capturing region of the photographing unit, and the storing unit stores the first image in the projection of the projection image or the first image after the projection of the projection image.