Canon 5D Mk 4

Delamere Forest
As Taken with just a little Luminosity Mask tweaking

Very impressed with the speed of the focussing and the image quality even at high ISO. I used it at Chester zoo the other day on Shutter priority with auto ISO. I wanted to try it out and I am very impressed. Next testing is Manual and auto ISO. But the speed of focussing even with my 100-400mm lens was what really impressed.