The Fujinon ZA12x4.5BERM-M6 ENG Style Lens with Servo Zoom is a 4.5-54mm lens, designed to provide 2/3″ cameras with an ultra wide to telephoto angle-of-view. The lens has a 12x zoom ratio, and a 2x extender effectively doubles the focal range. The maximum aperture is a fast f/1.8 at 4.5-41mm and stops down to f/2.4 at 54mm. A digital servo for zoom control and a 16-bit encoder is also included.