Canon EF-S 10-22mm f/3.5-4.5 USM

Thisexciting zoom lens provides ultra wide-angle coverage to the EOS 20Dand Digital Rebel shooter. Equivalent to a 16-35mm zoom, it offersexcellent performance and optics designed from the ground-up fordigital SLR use. Three Aspherical lens elements, plus a Super-UDelement, assure image quality. Its ring-type USM means fast and silentAF along with full-time manual focus.

• Excellent optical quality and true wide-angle coverage with select digital SLRs
• Superior AF performance and speed, with full-time manual focus by simply turning ring
• Close-focusing to 9.5 inches -- fill the frame with subjects as small as 3.6 x 5.4 inches
• Relatively compact size and light weight for an ultra-wide zoom lens
• Inner focusing system (no front element rotation); length doesn't change if zoomed
• Circular aperture design -- natural highlights, even stopped down two stops
• Electronic diaphragm -- manually-set apertures stay constant from f/4.5 thru f/22
• EF-S lens mount -- exclusively for EOS 20D and Digital Rebel bodies