Canon EF-S 10-22mm f/3.5-4.5 USM
This exciting zoom lens provides ultra wide-angle coverage to the
EOS 20D, 30D, 40D, 50D and Digital Rebel SLRs. Equivalent to a
16-35mm zoom, it offers excellent performance and optics designed
from the ground-up for digital SLR use. Three Aspherical lens
elements, plus a Super-UD element, assure image quality. Its
ring-type USM means fast and silent AF along with full-time manual
focus. It focuses as close as 9.5 inches.