Panasonic ET-EMW300 Zoom Lens enables you to vary the projection distance by adjusting the focal length. The lens offers a focal range of 12.31-15.43mm and an aperture range of f/1.84-2.24 providing a throw ratio of 0.55-0.691 in 1610 or 169 mode and 0.66-0.831 in 43 mode. Designed for use with PT-MZ16K PT-MZ13K and PT-MZ10K LCD laser projectors