Item Type: CCTV LensMaterial: Aluminum Alloy, GlassFocus Length: Approx. 5-50mm / 0.2-1.97inRelative Aperture: F 1.6Press Port: M12Image Format : 1/2.7Field of View: 76-8.8Pixels: 4MPBack Focus Length: 6.53Package List1 x CCTV Lens1[Wide Field Of View] The CCTV lens has a field of view of 768.8, providing your camera with a wide and clear field of view. 2[Clear Image Reproduction] Manual CCTV lens has 4MP pixels for clear images, high color reproduction and low distortion. 3[Premium Materials] This zoom lens is made of premium aluminum alloy and glass materials, sturdy and durable, ideal for long term use. 4[Applications] Manual zoom lens can be used for IP, AHD, surveillance cameras, suitable for portrait, landscape, short film, macro, sketch and other shooting. 5[Easy To Install] F1.6 1/2.7in lens has an M12 mounting interface, easy to load and unload, does not affect the installation of other accessories.