I was at Knockhill on Sunday for the first round of the Scottish Championship. Shooting with a 5D and a 300F2.8. I have to say I was extremely disappointed with the performance of the 5D. It was much worse than my old 10D as far as the keeper rate is concerned. In TV mode with a shutter speed of either 320 or 400 and AI servo mode, focus was all over the place. So much so that I'm convinced that ...


