Nikon D500 - Manual (Page 111)

111 Menu Guide
Selecting On for Shutter speed lock locks shutter speed at the
value currently selected in mode S or M. Selecting On for
Aperture lock locks aperture at the value currently selected in
mode A or M. Shutter speed and aperture lock are not available
in mode P.
This option controls the operation of the main and sub-
command dials.
f3: Shutter Spd & Aperture Lock
G button
➜ A Custom Settings menu
f4: 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-D17 battery packs.