An ultra wide-angle zoom lens with dynamic expressive capability for all EF-S mount EOS cameras; exceptionally small and lightweight for maximum mobility. The super-wide zoom not only gives you the freedom to get exactly what you want in the shot, it dramatically alters perspective to allow for dynamic expression. An A ring-type USM works in concert with the camera to provide super-fast, precision auto focusing and predictive tracking - with full manual override available at any time.

Focal Length & Max. Aperture:		10-22mm 1:3.5-4.5
Filter Diameter:		77mm; P=0.75mm/1 filter
Magnification with Extension Tube EF12 II:		0.77x - 0.58x (only at tele end)
Magnification with Extension Tube EF25 II:		1.51x - 1.28x (only at tele end)
Diagonal Angle of View:		107° 30' - 63° 30' (27.3mm)
Horizontal Angle of View:		97° 10' - 54° 30' (22.7mm)
Lens construction:		13 elements in 10 groups
Minimum aperture:		f/22-27 (f/22-29 for cameras featuring 1/3-stop increments also)
No. of aperture blades:		6 (circular aperture)
Closest focusing distance (m):		0.24m
Focus drive:		Ring USM
Dimensions:		83.5mm dia. x 89.8mm
Weight:		385g