Customer Review: Here's my personal pro/con list after I took this lens out to DC for a weekend. Pros:
Extremely wide - WOW!
Lightweight. Can't believe how light this. Probably the lightest among wide angle lens.
Interesting effects can be achieved which is normally difficult in normal zoom... more info
Customer Review: Excellent lens for portraits and performs at the level of an L lens, but without the cost of an L. You get a really attractive bokeh on the wide end of the aperature, and images have good color and contrast. This lens is a great value for the money, you won't be disappointed.
