To provide a technology which enables a main subject range to be specified with sufficient accuracy.

An imaging device 1A has an imaging means for photographing images of a main photographing image accompanied by the light emitting of a flash and a standby photographing image without the light emitting of the flash, an image comparing portion 123 for obtaining a difference value between corresponding pixels in the main photographing image and the standby photographing image, a subject detecting portion 122 for detecting a face range of a main subject from an imaging range by the imaging means, and an image processing means for performing image processing according to the difference value to each pixel included in the imaging range by using a face detection result by the subject detecting portion 122.