This is the 10-22mm wide-angle zoom lens with f/3.5-4.5 maximum aperture for EOS digital SLR cameras found on Amazon. Superior AF performance and speed, with full-time manual focus with the turn of a ring. Close focusing to 9.5 inches; fills the frame with subjects as small as 3.6 x 5.4 inches. Circular aperture design produces natural highlights. This product comes with a 1-year warranty.