jrbdmb wrote in post #15523886
Unfortunately the 6D AF system is a step down from the 60D and the t4i (1 cross point sensor vs. 9). No other way to put it, the 6D AF system is pathetic by design. If they had just used the 60D AF system I think most users would be OK with it, but instead they put in a system barely better than the 5D II.
Absolutely no doubt Canon missed the boat on this one; a $600 Rebel has a better AF system than the new $2000 FF camera.
You're missing one thing though, which is the 6D's -3 EV autofocus. It's actually superior to the 5D3 and even 1DX in very low light conditions of the sort you'll be shooting at above ISO 6400. That makes it a much more useful AF system than the 60D's. I think this is a much better design choice than giving it a Rebels AF system.
PaulB wrote in post #15523772
All smoke and mirrors............... SHOW me an example (as I requested in my original post).
I suspect that no-one can.
Okay, here's another example I found from this site. Architecture photography, a residential house with a shadowed porch.
Taking something this dark:
And raising the shadows to something usable.
You get this with the 5D3.
And this with the D800.
Now there is a way around this of course which is to use HDR. But the point is with the higher dynamic range sensor on the Nikon you don't even have to.