Nikon D90 User Manual page 122

4
Measure white balance.
Before the indicators stop flashing, frame the reference object so that
it fills the viewfinder and press the shutter-release button all the way
down. The camera will measure a value for white balance and store it in preset
d-O. No photograph will be recorded; white balance can be measured
accurately even when the camera is not in focus.
=
no
['d
=
S
Check the results.
If the camera was able to measure a value for white
balance,
Good
will flash in the control panel, while the
viewfinder will show a flashing Gd. At default settings,
the displays will flash for about six seconds.
If lighting is too dark or too bright, the camera may be
unable to measure white balance. A flashing
no Gd
will
appear in the control panel and viewfinder (at default
settings, the displays will flash for about six seconds).
Press the shutter-release button halfway to return to
Step 4 and measure white balance again.
\_1_1
1_---,
. . . . . . Good .....
/ i I \
P,-
E
PRE
,-_~_\_I_/.
- ' i O
Gd--
!
I \ \
P,.E
PRE
Control panel
\. I I /
7
I \ \
Viewfinder
102
6
Select preset d-O.
If the new value for preset white balance will be used immediately, select preset
d-O by pressing the WB button and rotating the sub-command dial until d-O is
displayed in the control panel.
~
Direct Measurement Mode
If no operations are performed while the displays are flashing, direct measurement mode will
end in the time selected for Custom Setting c2 (Auto meter-off delay, pg. 179). The default
setting is six seconds.