Well,
Yes, I have taken some few hundred shots yesterday and I'm a bit unsure what to make of the 5D. With flash, the autofocus (spot, which I prefer) works well enough, in fact pin sharp in most cases when I keep the camera still and AS on. BUT - if the flash is off, AS on, camera on auto, sometimes Prog mode, the focus isn't pin sharp. Most of the pics don't look that bad when they are loaded in a viewer on 'best fit' but when I look at them at full size I am sorely disappointed. Nothing I have focused on is in proper focus - the sharpness just isn't there. I have a Canon Powershot A80 that autofocuses better and an Oly C8080 that knocks the socks off it. I don't want to have to apply sharpness settings to the camera and I don't think that is the answer anyway. More info...I have a cheap Jessops 1A filter on, I read that that might cause problems so I will be taking this off later and testing. I have 3 film SLR Minoltas, I will be swapping lenses later to try them out. Also, I'm wearing specs that are a little underpowered for me at the mo and they need changing, a problem at the mo possibly when I manual focus but this shouldn't impact on the autofocus of the camera (I'm trying to make excuses for the 5D) - damn, I know this camera is not giving me pin sharp results, I don't know why. I don't think I'm expecting too much from the 5D. SOS.
I agree with some of the threads regarding the rattle I've heard, I'm not as concerned as I was that I could hear something. The metal snick describes it perfectly, now that I've read it...thanks