Compatible with cameras that have a 1/2" sensor, the H10Z1218PDC C-Mount Motorized 12-120mm DC Auto Iris Lens from computar has a 36.4 to 3.8° diagonal field of view. The lens provides remote control of focal length and focus via a separately available lens controller and supports zoom & focus presets. When used with a compatible camera with DC auto iris capability, the lens's iris opening can adjust automatically to compensate for changes in lighting throughout the day. It also has a built-in neutral density filter that increases the high end of the lens's f-stop range. This lens is suitable for use in parking lots, highways, and other venues that require long-distance surveillance.