I was going to make the switch to Nikon and sell all of my Canon stuff (plus I'm retiring) but once I got my MKIII back from Canon I realized that was foolish on my part. So, I have a brand new 17-55 f2.8 lens for sale, it has all of the pieces that come with it including an unfilled out warranty card. It has only been out of the box once so I could take the picture. The lens cost $1199 new from Roberts Imaging and I'm asking $1050 shipped and I will pick up the paypal fees.