The release of firmware V2.03 both improved the low light performance of the 1DX AF. The new firmware really expands and extends the existing AF parameters, and also adds more options to fine tune the AF configuration to ones own needs.
As a wildlife photographer who gets to shoot moving subjects a lot in my line of work, I have just put up a new post on my website sharing what works for me with regard to understanding and setting up the 1DX AF system. The post will also have some relevance to 5Dmk3 shooters, given the similarity of the AF systems in some regards.
For those with an interest, here is the link:http://www.grantatkinson.com/blog/understanding-canon-eos-1dx-autofocus-firmware-ver-2-0-3
Cheers
Grant
As a wildlife photographer who gets to shoot moving subjects a lot in my line of work, I have just put up a new post on my website sharing what works for me with regard to understanding and setting up the 1DX AF system. The post will also have some relevance to 5Dmk3 shooters, given the similarity of the AF systems in some regards.
For those with an interest, here is the link:http://www.grantatkinson.com/blog/understanding-canon-eos-1dx-autofocus-firmware-ver-2-0-3
Cheers
Grant