The computar E24Z1018-MP Series 3MP 10 to 240mm Lens is a 24x motorized zoom lens designed for C-mount cameras with 1/1.8" format sensors. This IR corrected day/night lens captures images while eliminating focus shift and infrared bleed. It features individual motors for iris, zoom, and focus, which can be remotely controlled. An aperture of f/1.8 to 500C was designed to provide enhanced performance in low light and in bright conditions. In addition, this lens features a built-in spot filter (a neutral density filter) that attenuates the amount of light transmission from bright objects.