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 Lens Material: Aluminium Alloy Purpose: Surveillance camera, DIYModel: CW FM1214 3MP Focal Length: 12.0mm Format: 1/2in Relative Aperture: 1.2Mount: CS Field Angle: 28.5°Back Focal Length: 12.53mm Iris: Manual, locking Zoom: - Resolution: 3 Mega Pixel M.O.D: Approx. 0.2m/7.87in Size: Approx. 30x34mm/1.18x1.34in. Package List: 1 x CS Mount Lens Note: Optical filming is very important for lens imaging, so it needs to be treated with care to avoid scratching the coating film.