Upload & Sell: Off
OK this may strike you as odd, but I'm just not an early adopter and I've always been so pleased with my 5Dclassic that I didn't feel I needed to upgrade to the 5DmkII when it came out. I figured I'd upgrade to the 5DmkIII and skip the mkII.
However, somewhere in between came the desire to use a 50L and I did a test in my regular camera store with my 5Dclassic and the 50L. That was about two months ago. Turned out the centre point was most accurate, but I only got about 20% images that were sharp or close to sharp. The fact that the 5Dclassic and the 50L wasn't a great AF combo was written all over, so I conceded and started looking for a new body so I could shoot a 50L and get lots of keepers.
Because there has been a consensus about the 5DmkII AF not being an improvement from the 5Dclassic, I never thought of the mkII as an option to shoot a 50L. Just for the hell of it, when I was at the same store I asked to hold their rental 5DmkII + 50L for a couple of minutes, put in my CF card and shot away.
When I came home and loaded the images in LR 4.1, I was baffled at the results. I had 80% keepers! Granted, I used centre point only, but I had done the same with the 5Dclassic.
As it is widely spread that 5Dclassic AF and 5DmkII AF are roughly the same, I would say there must be something strange going on. My 5Dclassic focuses very fast and reliably with all of my lenses (35L, 70-200mkII, 16-35mkII, 50/1.8mkII). It does very badly with the 50L. Then the 5DmkII focuses extremely well with the 50L. I must say that it's not the same 50L I used on the 5Dclassic as the one I used today on the 5DmkII.
Anyway based on what I shot today, I think I may be interested in a 5DmkII after all.