The 74.8-118.2mm Zoom Lens from Panasonic is designed to be used with a PT-EZ770Z series, PT-MZ670 series, or PT-MZ770 series projector. It supports either WUXGA, WXGA, or XGA resolution depending on which projector it is used with, and a throw ratio of 4.6 - 7.2:1. The lens makes it possible to vary the projection distance by changing the focal distance.