Canon - Zoom Super Wide Angle EF-S 10-22mm f/3.5-4.5 USM Autofocus Lens for select DSLR Cameras

I love this lens.  It is without question my favorite lens in my bag, above my two "L" lenses.  The quality of the images is near equal to the L lenses I have (EF 24-105 f/4 L& EF 70-200 f/4L).   What makes it my favoritie is effect of the wide angle image.  It automatically creates a feeling of spaciousness and place.   The only drawback to this lens in my mind is the distorsion at 10mm. 

If you have a EF-S mount and don't yet have a wide angle lens, I highly recommend this lens.  It is not terribly expensive, compared to Canon L lenses, yet produces great results.