Feature:1. 10MP Lens: The lens can be used for high resolution cameras with images up to 10 megapixels, focal length is 4mm, aperture is F1.816.2. 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.Specification:Item Type: C Mount LensMaterial: Aluminum alloyFocal Length: 4mmImage Format: 1/1.8inResolution: 10MPD/f': F1.8-16Mount: C MountField Angle(HxV) ():1/1.8in: 103.2 x 76.81/2in: 91.3 x 68.051/3in: 68.05 x 51. 4BFL: 17.53mmM.O.D.: 0.1mDimension: Approx. 39x38mm/1.54x1.5inLens Structure: Aluminum Alloy + 12GOperation:Iris: ManualFocus: ManualOperating Temperature: -20-+80.Package List:1 x Lens1 x Adapter Ring