I talked to our photographers. They took the still shots in one of our studios. With the same lens, using an professional lightning system or the aviable light (that did not change).
They will decide, whether they return all Cameras and make an switch back to Nikon, or they call for an "calibration" that every camera has the same quality. Before we bought the Camera, the representative of Canon spoke about an high quality, calibrated professional product. Afterwards they told us, that we have to accept an "little" gap of quality.
I´ll try to get an sample shot. The noise differs, like you take one shot with 400 ISO, the second one with 25000.... The worst MKIII produces noise, so @800 an black wall changes to an colorful pattern.
As I was one of the persons, that looking for that we buy Canon, I´m very disappointed.
In my opinion, its a shame, that Canon is not able to deliver cameras without an quality gap for business customers.