If
you are concerned with a series of images having the same
color settings so that they look similar and require no extra
postprocessing, it is best to actually adjust the white balance
to one of the preset or measured values. Then, each image
taken will have the same color balance.
If
I’m at a party, shooting images of friends for small snapshot
prints, I’ll often put my camera in Auto White Balance and
Program “P” exposure mode. Then, I’ll just take lots of pictures
without worrying about a thing. However, if I’m shooting for
commercial reasons, or am concerned with maximum image quality,
I use a gray or white card and balance my camera to the available
light. I only rebalance if the light source changes. Use Auto
for when you are not overly concerned about absolutely correct
white balance. It’ll be close enough for normal use.
Should
I Worry About White Balance if I Shoot in RAW Mode?
The
quick answer is no, but maybe not the best answer. When you
take a picture using RAW mode (creating .nef files) the sensor
image data has no white balance, sharpening, or color saturation
information applied to the image. Instead, the information
about your camera settings is stored as “markers” along with
the raw black & white sensor data. Color information is
only applied permanently to the image when you postprocess
and save the image in another format, like JPG, TIF, or EPS.
When
you open the image in Nikon Capture, or other raw conversion
programs, the camera settings are applied to the sensor data
in a temporary way so that you can view the image on your
computer screen. If you don’t like the color balance or any
other setting you used in-camera, you simply change it in
the conversion software, and the image looks as if you used
the new settings originally when you took the picture.
Does that mean I am not concerned about my white balance settings,
since I shoot raw most of the time? No. Remember how the human
brain can immediately adjust to an image’s colors and perceive
them as normal, even when they are not? That is one of the
dangers of not using correct white balance. Since an unbalanced
image on-screen is not compared to another correctly balanced
image side-by-side, there is a danger that your brain may
accept the slightly incorrect camera settings as normal, and
your image will be saved with a color cast.
Use
your white balance correctly at all times and you’ll make
better images for it. You’ll do less post camera work if the
white balance is correct in the first place. As RAW shooters,
we already have a lot of postprocessing work to do on our
images. Why add white balance corrections to the work flow?
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 white balance controls, you will be in trouble. When
you shoot JPEGs or TIFFs, your camera will apply the white
balance information directly to the image, and save it on
your card...permanently. Be safe…always use good white balance
technique!
Conclusion
Pages
35-44 of your D200 manual have extensive white balance information.
With the simple tips above, and a little study of the manual,
you can become a white balance expert with your D200. Learn
to use the color temperature settings above to make superior
images.
You’ll
be able to capture very accurate colors with your camera,
or make pictures with color casts reflecting how you feel
about the image. Practice a bit, and you'll find it easy to
remember how to set your white balance in the field.
Keep
on capturing time…
