The Questar Motorized StepZoom 180 is a powerful 8 to 1 variable focal length lens with the longest focal length available in an optic of its size. Fully motorized with microprocessor control, the lens offers parfocal selection of five effective focal lengths, four selectable filters, and a four line back lit display of focal length, filter position, focus range, and operating status. Weatherized construction is featured throughout, with protective optical flats at each end of the lens system. Remote control is possible at a distance of 4,000 feet from the hand terminal, PC or other RS-422 communication source, and the system is ready for integration with other related functions such as position and video control. Accessories include an integrated automatic light control filter.