The Fujinon XA20sx8.5BERM-K3 is a 20x ENG zoom lens for 2/3" format cameras, covering a focal length of 8.5-170mm for a wide-to-super-telephoto range. A 2x extender effectively doubles the focal range, and the lens holds a fast f/1.8 maximum aperture across 8.5-113mm. Internal focusing minimises the effects of lens breathing, keeping the focal length more consistent as focus is adjusted, and the servo zoom control is built with an ergonomic, digital design for smooth handling in the field. Fujinon's QuickZoom feature improves zoom speed to 0.7 seconds end-to-end, giving a rapid, push-button shift to the telephoto end to check focus, and the lens supports manual focus alongside servo zoom control.