Nikon D90 User Manual page 116

To select a value for white balance, press the WB button and rotate the main
command dial until the desired setting is displayed in the control panel. White
balance can also be adjusted from the shooting menu (pg. 165).
WB button
t
A
I (Fluorescent)
The bulb type is chosen using the White balance option in the shooting menu (pg.165).
A
See Also
When WB bracketing is selected for Custom Setting e4 (Auto bracketing set, pg. 191), the
camera will create several images each time the shutter is released. White balance will be
varied with each image, "bracketing" the value currently selected for white balance. See page
191 for more information.
96
Main command dial Control panel