1、Characteristic: The camera lens uses CS mount, the focal length is 25mm, the image format is 1/2in, the field of view is 16.7°, and it has manual focus and adjustable aperture. 2、High Definition: Optical coating is very important for the imaging of the camera lens. The camera lens adopts high definition optical coating to restore the true color. 3、Accurate Focus: The digital camera lens is designed with an easy to grip focus ring, which provides very accurate focus for highly accurate shots. 4、Premium Material: The shell of the camera lens is made of high quality aluminum alloy material, which is resistant to high temperature, waterproof, will not rust, and has a long service life. 5、Simple Operation: Manual iris lens is easy to install and disassemble without affecting the installation and use of other accessories, perfect replacement camera lens. 1 x CS Mount Lens Item Type: CS Mount LensMaterial: Aluminum AlloyFocal Length: 25.0mmFormat: 1/2inRelative Aperture: 1.2D/F'Mount: CSField of View (F.O.V) (D H V): 16.7°Back Focal Length: 8.03mmIris: Manual or LockResolution (MTF): 3MegaPixelM. 0.D: 0.2mDimensions: Φ 30x 34.00mm/ 1.18x 1.34in