An image processing apparatus includes an obtaining part configured to obtain a plurality of images including a photographing object photographed by a photographing part; a determination part configured to detects a shift in position between a first image and a second image included in the plurality of images obtained by the obtaining part, and determine whether the first image is suitable for being superposed to the second image; a selection part configured to select a certain number of images from the plurality of images based on a determination result of the determination part; and a synthesis part configured to synthesize the certain number of images selected by the selection part.