Fujinon HA42x13.5ERD 13.5-570mm HDTV ENG-Style Stabilized Telephoto Zoom Lens with 2x Extender Stabilized telephoto HDTV ENG-style lens for all high-definition broadcast news and field production applications Focal length of 13.5 to 570mm for 42x zoom ratio; contains servos for zoom and focus Rapid zoom movement to telephoto to check focus with the simple push of a button DigiPower servo control system contains QuickZoom, OneShot preset, AutoCruise, Zoom Mode Select, Zoom Speed Adjustment, and Zoom Limit Inner Focus technology to minimizes lens breathing