HD 5MP 2.8mm CS Mount Lens Aperture F1.4 1/2.5 inch Format IR for Day/night CCD 115 wide angle view 20m CS lense for CCTV cameras, suitable for both 1/2.5 and 1/3 CMOS/CCD chipsets for IP AHD security cameras. Specification: Aperture D/f F1.4 Focal-Length(mm):2.8mm Mount:CS Horizontal Field:115 Deg Dimension(mm): 28x15 Weight(g): 32.5 M.O.D(m): 0.2 Operation:Zoom: Fix Focus: Manual:Iris: Fix Operation Temperature: -10+60 Bake Focal-Length(mm): 7.69 Lens Construction: All Glass, Metal Applications: Suitable for both 1/2.5 and 1/3 CMOS/CCD chipsets for security cameras.