Excerpt: ePHOTOzine lens guru, Gary Wolstenholme shows us the Canon EF-S 10-22mm f/3.5-4.5 zoom lens. An ultra-wide angle zoom lens for use on Canon's EF-S compatible cameras, which gives an equivalent angle of view of a 16-35mm lens on 35mm cameras.
Pros: Excellent resolution in the centre at most apertures and focal lengths, Light weight, Good build quality
Cons: May be prone to flare and no lens hood is supplied, Falloff in resolution towards the edges at 22mm
Summary: Canon EF-S 10-22mm f/3.5-4.5 USM is an interesting ultra-wide zoom lens. At least for those willing to invest in an EF-S lens. The lens has some shortcomings - build quality leaves room for improvement, the lens does not come with a lens hood (surprise to me considering its price tag).
Conclusion: The Canon EF-S 10-22/3.5-4.5 is a very good lens. There is a little corner softness wide open at 10mm, but overall the image quality is excellent. Those who claim that this lens shows "L" quality performance may not be wrong.
Summary: The Canon EF-S 10-22mm equips budget to mid-range Canon DSLRs with ultra-wide angle coverage. While the equivalent coverage of 16-35mm sounds extreme, our Gallery shows the range can be surprisingly useful in practice.
Pros: Extreme wide angle coverage., Low geometric distortion., Fast, quiet and internal USM focusing., Relatively small and light.
Cons: Lens hood not supplied as standard., Modest macro capabilities., Sigma 10-20mm worth considering., Incompatible with full-frame bodies.
Canon’s EF-S 10-22mm f/3.5-4.5 USM; An Ultra-Wide Zoom Digital APS-C Format Lens
1 December 2001
Excerpt: The Canon EF-S 10-22mm f/3.5-4.5 USM (16-35mm equivalent in 35mm parlance) was designed to cover the APS-C format, specifically the EOS 20D and both EOS Digital Rebels (plus future APS-C models). Canon's EF-S lenses (S = Short Back Focus) are physically matched to these cameras.
Conclusion: Canon's ultra-wide offering is very impressive, with excellent edge sharpness for this type of lens. There is a small amount of chromatic aberration at the edges, but this can be easily fixed in RAW editing software such as Adobe Lightroom.