I am very happy with this lens as it gives me the ultra-wide angle I want for my camera. At the 22mm setting it can also get pretty close like 11" from lens. It makes for some interesting semi-macro shots. Be aware though that this lens is limited to Canon bodies with 1.6X factor APS size sensors. If you don't expect that you'll ever buy a full frame camera with a larger imaging chip like the new 5D then this lens makes sense. It is probably the highest quality super-wide zoom that one can currently buy for a Canon DSLR of this format.
Where Giants once tread (80) *