Canon's original APS-C ultra-wide zoom, a quality option before cheaper alternatives arrived.
The Canon EF-S 10-22mm f/3.5-4.5 USM was released in 2004 as Canon's ultra-wide zoom for APS-C EF-S bodies, providing a 16-35mm equivalent field of view for landscape, architecture, and interior photography. The ring-type USM motor and 77mm filter thread positioned it above the standard EF-S kit zoom tier. It is designed exclusively for APS-C bodies — the image circle does not cover full-frame sensors. The lens accepts only the EF-S mount and is not physically usable on full-frame EF bodies without adapters that expose the mirror housing to potential damage.
The optical design uses 13 elements in 10 groups, incorporating aspherical and UD elements for wide-angle aberration correction. Six rounded aperture blades produce acceptable out-of-focus rendering for a wide-angle zoom. The 77mm filter thread is the Canon L-series professional standard — matching the 16-35mm and 17-40mm L-series primes for filter carry-over across a Canon wide-angle kit. At 385g the lens is moderate for its angle of coverage. Minimum focus distance of 0.24m enables close foreground subjects with full ultra-wide background context in a single frame. Ring USM provides fast, silent AF with full-time manual focus override.
For APS-C landscape, architecture, and interior photography the 10-22mm provides the widest standard Canon zoom coverage — 16-35mm equivalent spans dramatic ultra-wide to moderate wide. The 0.24m minimum focus enables foreground-to-background wide-angle composition where a near subject fills the bottom of the frame while the background stretches to the horizon. The ring USM motor and EF-S build quality serve serious APS-C shooters who need reliable wide-angle AF. Variable aperture narrows to f/4.5 at 22mm — a consideration for interior and low-light architectural use.
On the used market the EF-S 10-22mm USM is widely available at moderate prices for an APS-C ultra-wide. Condition checks: ring USM response, front element for coating marks — the large 77mm front element is exposed on APS-C ultra-wide lenses — and the 77mm filter thread for any damage. The lens is EF-S only: compatible with APS-C Canon DSLRs and via EF-RF adapter on the EOS R7 and R10. The Canon RF-S 10-18mm f/4.5-6.3 IS STM provides the native APS-C RF equivalent at lighter weight. Compatible with all Canon APS-C EF-S DSLR bodies.