Product Description 2.98 - 4.77:1 Manual Zoom Lens (lens shift) for the NP-PA521U/PA571W/PA621X, NP-PA622U/PA672W/PA722X, NP-PA653U/PA803U/PA853W/PA903X, NP-PA804UL-B/PA804UL-W and NP-PA1004UL-B/PA1004UL-W projectors