« on: July 08, 2014, 08:21:02 PM »
The difference between the files are so minimal that I would call it a dead heat with the 6d just ever so slight advantage but would you notice in the real world.. don't think so.
The fact is you can get cracking results out of both cameras up to 6400ISO where i feel commercially you can push to. 12800 and 25600 can be used but only when needs must and you wouldn't get the shot otherwise.
Heres a few images shot at 12800 on the 5DMKIII and the 100mm L as a test to see what it could do!
The main positive about the 6D is the centre point is rated to -3ev whereas the 5DMKIII is -2EV.
But at the same time if your shooting in low light with large aperture glass you will be centring your image to keep focus, focus recompose with anything under F4 on a full frame camera and missing focus is very easy to do.
On the 5DMKIII you have 5 -2ev points which makes creative composition easier.
My 5D III focus just fine, even below -3EV (f1.4, 1.3sec, 1000ISO)