Compact, High Performance L-Series Super-Telephoto Zoom/ 77mm Filter Size/ One Fluorite And One Super UD Lens Element/ Rotation-Type Zoom Ring/ Inner Focusing, Ring USM, A High-Speed CPU And Optimized AF Algorithms/ Optical Image Stabilizer/ Improved Zoom Torque Adjustment Ring/ New Air Sphere Coating (ASC)/ Highly Resistant To Dust And Water/ Circular Aperture (9 Blades)/ Fluorine Coating On Front And Rear Lens Surfaces/ Minimum Focusing Distance Of 3.2 Ft./0.98 Meter With 0.31x Maximum Magnification/ 21 Elements In 16 Groups Lens Construction/ White Finish
