Included is an imaging unit that outputs images by imaging a subject, a light amount adjustment unit that drives a light amount adjustment member to adjust the amount of light input to the imaging unit, a control unit that controls the imaging unit so that after a first image is output by the imaging unit, a second image having an exposure amount different from that of the first image is output, and a setting unit that sets the difference in the exposure amount between the first image and the second image. The first image and the second image are images used for compositing. The setting unit sets the difference in the exposure amount between the first image and second image so that the relative relationship in the exposure amount between the first image and the second image imaged when the light amount adjustment unit is operating is the same as the relative relationship in the exposure amount between the first image and the second image imaged when the light amount adjustment unit is not operating.