1、10MP Lens: The lens can be used for high resolution cameras with images up to 10 megapixels, focal length is 4mm, aperture is F8‑16. 2、Detailed Image Quality: Industrial lens uses advanced glass composites and anti reflective coatings to produce detailed images with high contrast. 3、Wide Application: Low distortion, manual Iris can be fixed, high compatibility, the lens can be used for most security camera models. 4、Premium Material: Camera lens is made of premium aluminium alloy material, anti rust, wearproof, sturdy, can deal with harsh environment. 5、Simple Operation: Manual iris lens is easy to install and disassemble without affecting the installation and use of other accessories, nice replacement. 1 x Lens1 x Adapter Ring Item Type: C Mount LensMaterial: Aluminum alloyFocal Length: 4mmImage Format: 1/ 1.8inResolution: 10MPD/f': F 1.8-16Mount: C MountField Angle(HxV) (°):1/ 1.8in: 103.2° x 76.8°1/2in: 91.3° x 68.05°1/3in: 68.05° x 51. 4°BFL: 17.53mmM.O.D.: 0.1mDimension: Approx. 39x38mm/ 1.54x 1.5inLens Structure: Aluminum Alloy + 12GOperation:Iris: ManualFocus: ManualOperating Temperature: -20℃-+80℃