The Panasonic ET-D3LEW60 zoom lens has a 0.9-1.1:1 throw ratio. Designed for use with select 3-chip DLP projectors from Panasonic enables you to vary the projection distance by adjusting the focal distance. The zoom lens is equipped with an EEPROM (electronically erasable programmable read-only memory) and a stepping motor. Included with the lens is a protective lens cover. This lens will enable a larger image while positioning the projector closer to the display.