This Barco XLD Short Throw Lens is designed for use with the Barco HDQ-2K40, HDQ-4K35, Galaxy 4K-12 HFR, Galaxy 4K-23 HFR, and Galaxy 4K-32 HFR projectors. When used with 2K projectors, it provides a 0.8:1 throw ratio, and a 0.72:1 throw ratio when used with 4K projectors, along with a reduced lens shift. Since it is a fixed lens, no zoom is available, and is meant to be used with the projector near the screen for short throw projections.