Feature:1. High Quality Material: Prime lens is made of high quality aluminium alloy material, high strength, high temperature resistant, rustproof and durable.2. Excellent Performance: 3MP high resolution CS mount lens, with low distortion, high compatibility, can adapt to most security cameras.3. Adjustable Aperture: Camera lens with manual focus and adjustable aperture, also can be fixed and locked, convenient for using.4. High Accuracy: Focusing ring is easy to grip, provides very accurate focus to achieve high accuracy shooting, more practical.5. Easy Installation: Easy to install, no complicated operation is required, with 12mm focal length, 1/2in format, 28.5 field angle.Specification:Item Type: CS Mount LensMaterial: Aluminium AlloyPurpose: Surveillance camera, DIYModel: CW FM1214 3MPFocal Length: 12.0mmFormat: 1/2inRelative Aperture: 1.2Mount: CSField Angle: 28.5Back Focal Length: 12.53mmIris: Manual, lockingZoom: -Resolution: 3 Mega PixelM.O.D: Approx. 0.2m/7.87inSize: Approx. 30x34mm/1.18x1.34in.Package List:1 xCS Mount LensNote:Optical filming is very important for lens imaging, so it needs to be treated with care to avoid scratching the coating film.