Quote Originally Posted by Mark Elberson View Post
Thanks for the heads up. I am shooting a wedding in a week and will report back with my observations. I was also hoping that for the reception I could lean on the Mark III with its increased AF sensitivity. We shall see what happens. I'll probably shoot one Mark II with flash and the Mark III with some fast glass.

Side note:

Just playing around in a very dimly lit room I noticed that the AF would lock faster when using Single-point vs. Single-point Spot.
Great, looking forward to it! Also be warned, you may have trouble with the AF, just because of the viewfinder in the 5DIII There doesn't seem to be an option to show the AF point you're using, it only will turn red when focus is achieved. So in a dark area, if you're using center point AF, you are kind of just aiming the camera and hoping you have the center spot aligned with what you want to focus on, it's difficult to see! For some reason I never had this problem with the 5DII, so I need to go look at that camera again to see what it is doing differently.