The Marshall V-4705.0-2MP-VIS-IR 5.0mm F2.0 HD M12 Mount Prime Lens 2MP with 52 Degree Horizontal Angle of View designed for CV500-M Series HD-SDI POV cameras. The M12 Mount 5mm f/2.0 Fixed Iris Visible IR Corrected Miniature Lens is designed for M12-mount cameras with 1/3" sensors. It is suitable for applications that require covert day/night cameras.