Panasonic ET-EMW200 Zoom Lens enables you to vary the projection distance by adjusting the focal length. The lens offers a focal range of 10.8-12.52mm and an aperture range of f/1.84-2.14 providing a throw ratio of 0.48-0.55 in 1610 or 169 mode and 0.58-0.66 in 43 mode. Designed for use with PT-MZ16K PT-MZ13K and PT-MZ10K LCD laser projectors