The present disclosure provides a strobe mechanism which has a compact constitution thus avoiding vignetting of strobe light rays by a lens barrel. According to one aspect of the present disclosure, there is provided a strobe mechanism which brings a strobe into a use state by making the strobe pop up from a stored state. The strobe mechanism includes: a base member; a slide member held in a movable manner in one direction with respect to the base member; a strobe part which is mounted on the slide member; and a capacitor which supplies electricity to the strobe part; and the capacitor is arranged in a region defined by walls of the slide member.