So...I had an e-session and am wondering if some of you may be able to help me figure this out. This is my first time using the 70-200 2.8 IS and the attached image is at 200mm f2.8 and it seems OOF to me, especially in lightroom. Not looking for critiques on the image as I dont really like this shot, just trying to figure out why a lot of them at 200mm are OOF. Is 2.8 too shallow at this distance? Shots taken at 70mm look tack sharp. Thanks for any ideas! Im going to try and take some more images today and see what happens.