NEC NP15ZL - 4.7-7.2:1 Zoom Lens (lens shift)
by NEC
4.62-7.02:1 Zoom Lens for the NP-PA500X/PA500U/PA550W/PA600X, NP1000/2
4.7 to 7.2:1 zoom lens, used as option and is easily installed by end users and doesn't require any special tools.