Nikon D7100 - Manual (Page 285)

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U
This option controls the operation of the main and sub-command dials.
• 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
the MB-D15.
• Change main/sub: If Off is selected, the main command dial
controls shutter speed and the sub-command dial controls
aperture. Select On (Mode A) to use the main command dial
to select aperture in shooting mode A, On to use the main
command dial to select aperture in modes A and M and the
sub-command dial to select shutter speed in modes S and M.
This setting also applies to the command dials for the MB-D15.
• 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.
• Menus and playback: If Off is selected, the multi selector is used to choose the picture
displayed during full-frame playback, highlight thumbnails, and navigate menus.
If On or On (image review excluded) is selected, the main command dial can be
used to choose the picture displayed during full-frame playback, move the cursor
left or right during thumbnail playback, and move the menu highlight bar up or
down. The sub-command dial is used to display additional photo information in
full-frame playback and to move the cursor up or down during thumbnail
playback. Select On (image review excluded) to prevent the command dials from
being used for playback during image review. While menus are displayed, rotating
the sub-command dial right displays the sub-menu for the selected option, while
rotating it left displays the previous menu. To make a selection, press 2 or J.
f5: Customize Command Dials
G
button ➜ A Custom Settings menu