An imaging device for supporting the user to generate satisfactory synthesized images, not missing photo opportunities. The imaging device generates a plurality of still images continuously and generates a synthesized image from the still images. While the shooting button is pressed to instruct continuous shooting, the imaging device performs a process in which it writes still image data, which is obtained by the continuous shooting, into a recording medium sequentially. After the continuous shooting ends, the imaging device enters a wait state to wait for a new instruction, and then upon receiving an instruction to start generating a synthesized image, it performs a process of generating a synthesized image by using a plurality of pieces of still image data stored in the recording medium.