Upload & Sell: Off
I have done some shooting with the 17-55 2.8 on my 7D and the results have been spectacular. I did however do an AF Micro adjust before doing any real shooting. And it took a adjustment, somewhat smaller than what I had to do on my now sold 50D, but a correction was required.
Indeed the FIRST thing I did after charging the battery, was set the camera up on a tripod, attach a cable shutter release, and go through a battery of lenses that I would plan to use on the camera and perform the micro adjustments for each lens. I think with Micro adjust that becomes standard operating procedure. And it is a beautiful thing.