Canon zoom lenses are very convenient. The equivalent of two or more fixed focal length lenses in one unit. The maximum aperture of some zoom lenses changes as you alter the focal length, but through-the-lens (TTL) metering takes this into account to give correct exposure.

An ultra wide-angle zoom lens with dynamic expressive capability for all EF-S mount EOS cameras; exceptionally small and lightweight for maximum mobility.

Features
Super wide angle zoom for all EF-S mount bodies
Superb image quality
Lightweight and compact
Focusing distance of just 24cm.
Fast near-silent USM AF
Super Spectra coatings
Circular aperture
Optional exclusive lens hood

A new perspective.

With its effective focal length range of approximately 16-35mm in 35mm format, the EF-S 10-22mm f/3.5-4.5 USM is a remarkable lens with outstanding image quality that will take your photography into new dimensions and areas of dramatic expression.