View single post by jk

Posted: Fri Oct 5th, 2018 05:13

Joined:	Mon Apr 2nd, 2012
Location:	Carthew, Cornwall, United Kingdom
Posts:	6874
Status:	Offline

The old design 600mm f4, 500mm f4, 400mm f2.8 were designed to be sharp wide open with only a small improvement one stop down from max aperture. Dont know about the newest lenses but similar I guess.

Remember the min aperture for the latest generation of cameras D5, D850, D500 for the AF to work is f8 NOT f5.6 as was with D4 and others. In fact my D3 performed well enough at f8 but was a little slow to latch focus.

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