An imaging device of the present invention, for taking and storing movies and still pictures, comprises an image sensor, an imaging processing section, and a control section for controlling exposure of the image sensor and controlling taking of an optical image, wherein the control section, when taking still pictures while shooting a movie, carries out exposure by dividing a time corresponding to a single frame of the movie into a plurality of times, applies processing by the imaging processing section to acquire a plurality of image data, performs positional alignment of the subject image of the plurality of image data and combines a plurality of image data, and stores as still picture data, and combines a plurality of image data without carrying out positional alignment of the subject image of the priority of image data and stores as a single frame of the movie data.