An electronic device includes: a first housing comprising a first surface and a second surface, and a second housing comprising a third surface and a fourth surface; a hinge connecting the first housing and the second housing to be foldable about a folding axis, the first surface facing the third surface in a folded state of the first housing and the second housing, the first surface and the third surface being oriented in a same direction in an unfolded state of the first housing and the second housing. Based on a touch input to activate the flash being received through the second display, a processor identifies an ambient illuminance value and state information relating to whether the first housing and the second housing are in the folded state or the unfolded state; and control the flash, based on the state information and the ambient illuminance value.