How wide can it get?

Here are test shots from my two other lenses comparing to 10-22mm from the same distance.

With 28-135mm at 28mm


With 18-55mm at 18mm


With 10-22mm at 10mm


Gotta love the 10-22mm. It's great especially for landscapes and indoors with tight space.

My new lens

It's Canon EF-S 10-22mm f/3.5-4.5 USM super wide angle. It's now the third member of the lens family. More pictures will come from this lens.