Nikon D810 - Manual (Page 375)

351
This option controls the operation of the main and sub-
command dials.
f9: Customize Command Dials
G
button ➜ A Custom Settings menu
Option Description
Reverse
rotation
Reverse the direction of rotation
of the command dials when they
are used to make adjustments to
Exposure compensation and/
or Shutter speed/aperture.
Highlight options and press 2 to
select or deselect, then press J.
This setting also applies to the command dials for optional
MB-D12 multi-power battery packs.
Change
main/sub
Exposure setting : If Off is selected, the main command dial
controls shutter speed and the sub-command dial controls
aperture. If On is selected, the main command dial will
control aperture and the sub-command dial shutter speed.
If On (Mode A) is selected, the main command dial will be
used to set aperture in exposure mode g only.
Autofocus setting
: If On is selected, autofocus mode can be
selected by keeping the AF-mode button pressed and
rotating the sub-command dial, AF-area mode by keeping
the AF-mode button pressed and rotating the main
command dial.
These settings also apply to the command dials for the
MB-D12.