A9: Limit Af-Area Mode Selection; A10: Autofocus Mode Restrictions - Nikon D850 Menu Manual

a9: Limit AF-Area Mode Selection

Choose the AF-area modes that can be
selected using the AF-mode button and
sub-command dial in viewfinder
photography (live view is unaffected).
Highlight the desired modes and press 2
to select or deselect. Press J to save
changes when settings are complete.

a10: Autofocus Mode Restrictions

Choose the autofocus modes available in
viewfinder photography. If only one
mode is selected, the autofocus mode
cannot be chosen using the AF-mode
button and main command dial.
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
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Menu Guide