I'm not sure if this is the right place to ask but I heard there were still some issues with the 70-200mm F2.8L II IS. For example, the lens does not mount tight against the body. Some owners experience some 'play' if the lens is gently twisted back and forth against the body. There were complaints that some of the lenses were not sharp compared to other 70-200 ... possible quality control issue with Canon(?). Does anyone know if these issues have been resolved? Are these issues a real concern?
I am also looking into purchasing the 70-200 F2.8L II but the shops here does not allow us to open the boxes to test the lens. If you want to open the box, you need to buy it. If you have problems, send it back to Canon. This is what they tell me. It would be nice to spend >$2200 on a lens and not have to worry about 'potential' problems. I guess it depends on your luck!
It depends on the body. There is a some play, but the pin locks and it works fine. The play was more on my 5DII than my 5DIII but there is still some. I also have some play in some of my other Canon lenses. It's a tolerance stackup issue, but it's within the specs and everything works as it should.
Perhaps there is a lemon here or there, but there are lot fewer 70-200 f/2.8 IS II complaints than the 50L, 50A, 35A, etc. If your body as AFMA, use it to get the best performance. If it doesn't, then you might have to send both the lens and camera into Canon for them to adjust.