I just love this lens on my 5D Mk II. It is lightweight and very sharp.
It outperforms my two L lenses, and I am always amazed at the resolution it gives my pictures.
I find myself using this more and more since it is so much lighter to carry when I want to shoot all day.
It is great for portraits, and really sharp at f2.
I am glad that I spent the extra money over the 1.8.
(Written by: motelgeorge)