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This option controls the operation of the main and sub-command
dials.
f10: Customize Command Dials
G button ➜ ACustom 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 highlight
Done and press J.
This setting also
applies to the command dials for vertical shooting.
Change
main/sub
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.
This setting
also applies to the command dials for vertical shooting.
Aperture
setting
If Sub-command dial is selected, aperture can only be
adjusted with the sub-command dial (or with the main
command dial if On is selected for Change main/sub).
If
Aperture ring is selected, aperture can only be adjusted with
the lens aperture ring and the camera aperture display will
show aperture in increments of 1 EV (aperture for type G lenses
is still set using the sub-command dial).
Note that regardless of
the setting chosen, the aperture ring must be used to adjust
aperture when a non-CPU lens is attached.