Upload & Sell: Off
I'm one of the 3 stop crowd. The max I'd ever shoot my 5D is 1600 in the real world (wedding or commercial photography). My 5D3 I shoot often at 12,800. That's a 3 stop advantage for me in real world shooting. Does that mean the 5D3's grain at 12,800 is the same as the 5D at 1600? Heck no. But there's much more to grain and the overall image than what's being presented in this thread. On top of that, the 5D3 doesn't have to have exposure nailed at 12,800 in order to get a perfectly usable image. There's a bit of leeway with that. Even with the 5D2, the max I'd shoot is ISO 3200. Sure, 6400 is good....if you nail exposure. Just a hair off and the image is blown with horrible qualities to the blacks. Back to the 5D and 5D3, the difference between these two cameras with ISO is vast in real world shooting in my opinion. Again, I do recognize the 5D3 has more grain at 12,800 than the 5D at 1600, but the grain structure is filmic and beautiful and there's depth to the image.