Canon 17-55mm f/2.8 IS USM Test Shots Post author By Ron G Post date January 26, 2011 Categories In Photography No Comments on Canon 17-55mm f/2.8 IS USM Test Shots Received the lens that I have been wanting for a few weeks now. It’s bigger than the Tamron, it’s heavier and costs three times as much. Is it better, is it sharper and more importantly is it worth the price tag? We’ll find out soon enough… Tags Canon 17-55mm f/2.8 IS USM