Abstract: The present invention provides a zoom lens unit and a photographic device using the same, wherein the zoom lens unit can readily achieve position accuracy and slope accuracy of the lens, and reduce the required number of parts to lower the costs. The zoom lens unit of the present invention comprises a plurality of lens sets constituting an optical system wherein at least two lens sets thereof are movable, stepping motors for separately driving each of the at least two lens sets, and a shutter module installed in the center of the optical system, wherein the at least two lens sets and the shutter module are installed within an integral box body.