The Panasonic ET-D3LES20 Zoom Projector Lens has a 1.7-2.4:1 throw ratio. This lens offers flexibility on the placement of your projector setup. The ET-D3LES20 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. You can use this lens with the following projector models from Panasonic.