The lens is a very important component of your camera. It regulates the incidence of light on the camera's CCD and thus ensures an optimal exposure of your pictures. All lenses have a standard mounting thread. You can easily mount CS-Mount lenses on any camera. The aspheric lenses ensure especially high-quality pictures and prevent poor focusing at the edges. The incidence of light through the iris is controlled by the camera's auto-iris function. The lens is connected to the camera with a DC plug. (The greater the focal length, the narrower the viewing angle and the nearer you can zoom in on the image.) The TV8552, TV 8553, TV8554, TV8555 and TV8556 lenses are IR-light compatible.