1. An imaging device comprising: an imaging unit for photographing an image; a face extracting unit for extracting a face region including a person's face part from said image; a rating calculation unit for calculating a rating from said extracted face region; a threshold setting unit for accepting setting of a threshold for said rating; and a re-photograph indicating unit for judging whether to indicate a re-photographing based on comparison of said rating and said threshold and indicating, to a user, re-photograph based on said judgment.