The L4K-11ZM 1.24-1.73:1 Powered Zoom Shift Lens from NEC is a lens designed for use with the NEC NP-PH2601QL and NP-PH3501QL projectors as well as NP-PH2601QL-R and NP-PH3501QL-R projectors. The recommended screen size is 50 to 500".1.10-1.70:1 Motorized Zoom Lens (lens shift) for NP-PH2601QL and NP-PH3501QL projectors