1、2.8mm Focal: CS mount lens is designed with 2.8mm focal length, 1/1.8in image format, professional design offers more professional shooting to you. 2、High Accuracy Focus: The CS mount lens with manual focus and adjustable aperture, provides high precision focus for highly accurate shooting experience. 3、Clear Images: Low distortion, high compatibility, advanced glass composites with anti reflective coatings produce detailed images with high contrast. 4、Wide Application: Images up to 10Mega Pixel can be used in high resolution cameras, and is suitable for most security camera models. 5、Reliable Materials: The camera lens is made of premium aluminum alloy shell structure with excellent resistance to high temperature, not easy to rust or deform, durable.