.. Here is another example of 1Dx shot in normal daylight conditions using 70-200 2.8L IS USM II.
This 100% crop to get close-up of the subject. Not too bad I belive for the camera and lens combination)))
Looks like the AF nailed it.
I'm curious tho, what software created the 100% crop jpg?
There appears to be a slight bit of a black halo/edge along the left side of duck's (duck's R side) white feathers where it borders with the water background. Looks a bit like a strong unsharp mask was applied.
It was "quick and dirty" Win 7 snipping tool to get snapshot of the portion of the screen and then save it to the JPEG to attach to the post . Output of this tool is highly compressed and so quality is affected.
Intention was not to show fine details on pixel level but rather to show that in normal light conditions (and for 1Dx it is normal contrast low light as well) 1Dx is performing very well - regarding shadows (initial post topic) and highlights as well.
So now is the same 100% crop normally exported from LR with 100% quality with no sharpening for the screen.
And this was casual shot from far distance (while I was waiting for some indoor event) - as soon as I took camera off the bag and started approching more closely then few minutes later I was stopped by security telling that to use professional camera and lens without park authorities permission is not allowed (((.
As for 1Dx autofocus - it is exellent - almost 100% images are perfect in this respect.
Even for 85 1.2L USM II i have almost 100% of the perfectly autofocused shots at F=1.2.
The only one thing that I found dissapointing is that in AI Servo mode i could start object tracking only from central AF point.
If I set any periferal point as starting point then 1Dx autofocus OK initially but not tracking the object. This is not very convinent in many situations when object is moving accross the frame and I want to catch it at one side of the frame and track it without camera movement while it crossing the frame.
So nothing is perfect - even 1Dx is still far away from my vision of perfect camera - but this is separate subject.