The Vivitek 5.31-8.26:1 Long Zoom Lens 3 works with Vivitek's D8800/D8900/D8010 Large Venue Projectors. It's built for large venues where the throw distance needs to be very long and the image size can vary from large to small. It features a motorized focus and zoom, with a zoom ratio of 1.55:1. It also has vertical and horizontal lens shift for moving the image up or down and left or right, which increases flexibility when installing your projector.