I never use AWB. I set the camera to Sunny WB & leave it.
Sunny WB is going to be wrong, but at least it's always consistently
wrong in the same direction. AWB is going to be wrong & wandering all
over the place. NO two shots will be wrong in the same way.
With the fixed WB I have an easier time correcting it in Camera Raw.
From: Jos from Holland
Hi Charles,
My thoughts:
The human eye-brain combination has a very intelligent
white-balancing system; a photograph of the lady sitting under a
green sun shade, shows a greenish skin, but with your own eyes you
see correct color because your brain knows that skin is not green and
concludes that it has to correct because of the green sun shade.
The automatic white balance of your camera has to decide which part
of the scene has to be called white. It will select the brightest
part of the scene: the reflection on your ring! This is probably
yellowish, because its own gold color and because of the sun light.
If the system makes this white, the rest of the scene will be bluish.
The system worked perfectly, it did what it was told to do!
Greetz, Jos
On 17-12-2012 17:35, Charles Robinson wrote:
A little example of how late in the day we were at the Valley of
Fire National park. The first uncorrected image shows what the
color of the light was - and holding the preview screen of the
camera next to my hand, it looked right on.
This was about 20 minutes after the sun had completely disappeared
behind the mountains/hills to the West. It was getting to the
point where my wife and I could just barely see the path to walk.
http://charles.robinsontwins.org/photos/2012/IMGP5608.jpg
The second image is the one I used to color-correct everything else
I shot after sunset. I made my hand look normal, so the rest of
the images would look properly like daylight shots. Indeed, this
is the color of red we were seeing before the sun dropped below the
horizon.
http://charles.robinsontwins.org/photos/2012/IMGP5608-2.jpg
My first thought when I saw the image on the preview screen was
that the auto-white-balance was being thrown by the red of the
sand. But holding the camera next to my hand, it looked just like
what I was seeing with my eyes. Funky.
-Charles
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