Electronic device and method for obtaining data from second image sensor by means of signal provided from first image sensor

An electronic device according to various embodiments comprises a first image sensor and a second image sensor which is electrically connected to the first image sensor by means of one designated interface. The second image sensor can be configured so as to: receive a first signal, for shifting from a first state to a second state, from the first image sensor; while the first image sensor detects light outside the electronic device by means of a plurality of first pixels, detect the light by means of a plurality of second pixels on the basis of the first signal; receive a second signal, for shifting from the second state to the first state, from the first image sensor; and, while the first image sensor obtains first data corresponding to the light detected by means of the plurality of first pixels, obtain second data corresponding to the light detected by means of the plurality of second pixels on the basis of the second signal.