Features: 1.Important Parameters: This lens works with CS mount, with 23 degrees horizontal feld of view, 1/2in lens optical format, and 30 x 34mm/1.18 x 1.34in dimension diameter. 2.Tough Shell: The lens is covered by high quality aluminum alloy shell, which resistant to high temperature, and better protect the delicate lens. 3.Highly Accurate: The easy to grip focus ring provides precise focus for highly accurate shooting, ensures sharp image with low distortion. 4.Adjustable Aperture: This lens allows you to adjust aperture of the lens in response to the light levels it affects parameters in the imaging system. 5.Easy Installation: You just need to screw and fix the aperture lens into the back focus adjustment ring on your HD camera. Specification: Item Type: Fixed Focal Lens_x000D_ Material: Aluminium Alloy_x000D_ Model No: CW-FM1614-3MP_x000D_ _x000D_ Focal Length: Approx. 16mm/0.63in_x000D_ _x000D_ Optical Format: 1/2in_x000D_ D/f': 1.2_x000D_ _x000D_ Mount: CS mount_x000D_ _x000D_ Field of View: 23 degree (H)_x000D_ Back Focal Length: Approx. 7.53mm/0.30in_x000D_ _x000D_ Iris: Manual lock_x000D_ _x000D_ MTF: 3Mega Pixel_x000D_ _x000D_ MOD: Approx. 0.2m/7.97in_x000D_ Dimension: 30 x 34.00mm/1.18 x 1.34in PackageList: 1 x Lens Note: Optical coating is essential for lens imaging, it is necessary to gently handle the coating to avoid scratching when using