Fujinon XA20SX8.5BERM HD Professional Lens Focal Length Covered 8.5 to 170mm (340mm with x2 extender) HD Optical Performance Built in a x2 extender Newly eXceed Servo Grip Quick zoom*1 and Auto Cruising Latest EBC coatings for improved optical performance *1 It is necessary to set lens up to use Quick Zoom function. Specifications Model Name XA20sx8.5BERM Focal length [1x] 8.5-170mm [2x] 17-340mm Zoom ratio 20x Extender 2x Maximum relative aperture (F-no.) 1: 1.8 (8.5-113mm) / 1: 2.7 (170mm) Minimum object distance (M.O.D.) from front lens 0.9m Object dimensions at M.O.D. 16: 9 Aspect ratio [1x] 8.5mm 910 x 511mm 170mm 47 x 26mm [2x] 17mm 469 x 264mm 340mm 24 x 13mm Angular field of view 16: 9 Aspect ratio [1x] 8.5mm 58.9? x 35.2? 170mm 3.2? x 1.8? [2x] 17mm 31.5? x 18? 340mm 1.6? x 0.9? Filter thread M82 x 0.75 Approx Size Ï??85 x 200.8mm(Ï?? x Length) Approx Mass 1.6kg(without lens hood)