Today Nikon published Firmware C1.10 for D850.
That's a bit which (in my experience) came in with other updates before. In the beginning I had less troubles with the outer focus-points.
Some lenses (also genuine Nikkors) sometimes won't focus with them. So far I thought, the just took it very strict to only make the center point working with f/8 lenses and the other points up to f5.6. A Tamron 150-600 G2 would need f/6.3, so no wonder. But that was not the only lens affected and all of these affected lenses were not always refusing to autofocus.
But wait: "... at the edges of the frame" are no focus points, except in LiveView - and here I never faced any troubles. Probably they mean "at the edges of the AF area"
Quote:Fixed the following issue:
The camera sometimes had trouble focusing on subjects in the focus points at the edges of the frame.
That's a bit which (in my experience) came in with other updates before. In the beginning I had less troubles with the outer focus-points.
Some lenses (also genuine Nikkors) sometimes won't focus with them. So far I thought, the just took it very strict to only make the center point working with f/8 lenses and the other points up to f5.6. A Tamron 150-600 G2 would need f/6.3, so no wonder. But that was not the only lens affected and all of these affected lenses were not always refusing to autofocus.
But wait: "... at the edges of the frame" are no focus points, except in LiveView - and here I never faced any troubles. Probably they mean "at the edges of the AF area"