Feature:1. Clear Image Quality: CS mount CCTV Lens, 2.1mm focal length, 3 megapixels. No lens shading, no dark corners, decent image quality.2. Wide Angle Lens: This CCTV camera lens can provide your camera with a super clear field of view with high image clarity, good color reproduction.3. Premium Material: Security camera lens is made of high quality aluminum alloy material, not easy to break, to ensure a long service life.4. Wide Application: Camera lenses are ideal for cameras in homes, bars, shops, parking lots, houses, warehouses, etc.5. Easy Installation: The lens is easy to install and remove without affecting the installation and use of other accessories. Once installed, your device will be as good as ever.Specification:Item Type: CS Mount LensMaterial: Aluminum alloyFocal Length: 2.1mmImage Size (Format): 1/2.7inRelative Aperture (D/f): 1: 1.6Interface (Mount): CSField Of View (F.O.V) (D/H/V): 1/2.7in 162.5x142.4x80Back Focal Length (BFL): Approx. 12.53mm//0.49inAperture (iris): FixedResolution (MTF): 3Mega PixelClose Up Distance (M.O.D): Approx. 0.2m/0.66ftDimension: Approx. 28.0x10.50mm/1.1x0.41inOperating Temperature: -20-+60.Package List:1 xCCTV LensNote:The optical coating is very important for the imaging of the lens, and it needs to be handled with care to avoid scratching the coating.