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.
Excerpt: The EF-S 10-22mm f/3.5-4.5 USM from Canon has a 35mm equivalent focal range of 16-35mm, offering a very wide, corrected field-of-view. The lens is relatively compact in design, with a zoom ring at the front and a small manual focus ring at the rear.
Conclusion: Kanon lækker vidvinkelobjektiv, som tager nogle virkelig flotte billeder og man får det hele med. Fokus-motoren virker ekstrem god, den er lynhurtig til at fokusere og nem at bruge med manuel fokus.