Canon EF-S 17-85MM f/4-5.6 IS USM Standard Zoom Lens

Compact, lightweight design with a 5x zoom ratio Focus Adjustment: Inner focusing system, with focusing cam Zoom System: Ring USM f/4 to 5.6 Zoom Lens EOS SLR Camera Systems: EOS 20D Digital Rabel 3.60″ Length x 3.10″ Diameter 9517A002 http://www.canon.com Equivalent to a 28-135mm lens, this new EF-S lens brings true wide-angle to tele coverage to EOS 20D and Digital Rebel shooters. It has Canon’s Image Stabilization system, allowing safe hand-holding at speeds up to three stops slower than otherwise possible. And of course, it’s optically optimized for digital SLRs. A ring-type USM means both fast and silent AF, as well as full-time manual focus when in the AF mode. 1 Year 1 Year Limited 1.05 lb Canon, Inc EF-S 17-85MM f/4-5.6 IS USM Standard Zoom Lens 79° to 18° Canon 17 Elements in 12 Groups 67 mm Motorized 85 mm 17 mm