The invention relates to a photographic printer for printing a frame recorded on a photographic film to photosensitive material through a lens or a film scanner for picking up a frame recorded on a photographic film via a lens, comprising a film carrier in which said frame of said photographic film is set, a light source for illuminating said photographic film set in said film carrier, said light source including diode elements disposed in a matrix for emitting light of red, green and blue colors, said light source illuminating said frame from behind, an image sensor, constituted by plural cells, for measuring said frame illuminated by said light source photometrically at minute regions of said frame, means for performing three-color sequential photometry or pick-up for said frame recorded on said photographic film, a diode driver, connected to respective said diode elements, for driving said diode elements by application of a drive signal thereto, and a controller, connected to said diode driver, for controlling said diode elements via said diode driver, said controller determining said drive signal applied to respective said diode elements by said diode driver.