Hi
Basic question - would an EF 800mm f5.6 with a 1.4x extender retain autofocus at the centre point with a 1DX Mark II?
I can find this article here (https://support.usa.canon.com/kb/index?page=content&id=ART174703) that "1 series bodies" retain centre point AF, but 1DX is not mentioned?
Thanks
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