We'll have to wait and see what happens with DxO testing and elsewhere to see if there is any banding evident but it is a pity that Canon didn't put the same effort into improving IQ between the 5D2 and 5D3.
I'm curious if you owned either. I noticed marked improvement, but that was in my own, personal, real-world photography . . .
The 5Dmk2 was my workhorse before replacing it with a couple 5Dmk3s. There is at least a 1-stop improvement in overall image quality in noise levels at high ISOs plus much more color detail. With the 5Dmk2 I couldn't rely on ISOs over 3200 for 8x10 prints, but with the 5Dmk3 I can easily push it to 6400 (though I rarely do).
Exactly. I just don't see the complaining or the doom and gloom . . . every quirk I didn't like about my mk2 was answered with the mk3, but on every new camera thread, we get people talking about Canon's failures that I'm just not seeing.