Nikon D300 User Manual page 704

simply change it in the conversion software and the image
looks as if you used the new setting when you took the
picture.
Does that mean I am not concerned about my WB settings
since I shoot RAW most of the time? No. The human brain
can quickly adjust to an image's colors and perceive them as
normal, even when they are not. This is one of the dangers of
not using correct WB. Since an unbalanced image on your
computer screen is not compared to another correctly
balanced image side by side, there is some danger that your
brain may accept the slightly incorrect camera settings as
normal and your image will be saved with a color cast.
As a rule of thumb, if you use your WB correctly at all times
you'll consistently produce better images. You'll do less
post-processing if the WB is correct in the first place. As
RAW shooters, we already have a lot of post-processing work
to do. Why add WB corrections to the workflow? It's just
more work, if you ask me!
Additionally, you might decide to switch to JPEG mode in the
middle of a shoot, and if you are not accustomed to using
your WB controls, you'll be in trouble. When you shoot
JPEGs, your camera will apply the WB information directly
to the image and save it on your card permanently. Be safe;
always use good WB technique!
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