Nikon D300 User Manual page 164

II Measuring a Value for White Balance
1
Light a reference object.
Place a neutral gray or white object under the lighting that will
be used in the final photograph. In studio settings, a standard
gray panel can be used as a reference object. Note that
exposure is automatically increased by 1 EV when measuring
white balance; in exposure mode M, adjust exposure so that
the electronic analog exposure displays shows +0 (pg. 113).
2
Set white balance to
PRE
([Preset manual]).
Press the WB button and rotate the main command dial until
PRE
is displayed in the control panel.
d-[]
m
(3
Control panel
138
WB button
Main command
dial