Engineered for ultra high resolution broadcast PTZ cameras, the HD12 Micro Thin Lens 4K Optically Pure from Dotworkz is an ultra-thin optically pure acrylic lens cover for camera housings. It's designed to protect advanced PTZ and VR cameras from the elements without compromising optical quality. Compatible housings include the HD12 and B.o.B. (Bi-Ocular Box) from Dotworkz, and Breeze housings from Sony. The lens is 12" in diameter and is not recommended for applications requiring impact resistance.