Feature:1. 5MP high definition lens, observe objects more clearly with low distortion.2. The zoom lens can change the shooting range by changing the FL, very helpful for picture composition.3. One zoom lens can serve as several prime lens lenses, saves the time for lens replacement.4. Has high compatibility, can be applied to most security cameras, aperture can be fixed and locked for more convenience.5. Made of high-quality aluminum alloy material, strong and durable, has stable performance.Specification:Item Type: Zoom LensMaterial: Aluminium AlloyColor: Black+RedPixel: 5MPFL: 5-50mmRelative Aperture: 1:1.4Image Size: 1/2.7in 1/3inMount: CS MountHorizontal Field of View: 1/2.7in 51-6.1 1/3in 45-5.5Minimum Object Distance: 1.5mOptical Back Focal Length (BFL): 8.1-15.73mmWorking Temperature: -20-60Aperture: Manual Aperture.Package List:1 x 5MP Zoom Lens