Amazing lens, fast USM, perfect indoor or crowed space range
this is my first 1k lens. All I can say is WOW. I was blown away. I know if a picture comes out bad the issue is me not the lens or my 350xt. Painfully sharp, I cut my retina viewing the pictures. Post processing not needed unless your doing 100% prints. If you have the need for a 17-55mm lens save you money skip other zooms this is THE LENS for the 350xt/30D.