White Balance A showing blue instead of red

Wedge · Post by **Wedge** » Tue Mar 20, 2007 3:25 pm

Hey, I have been working with white balance lately and I'm trying to sort them from blue to red.

After viewing the manual and following the link:
http://en.wikipedia.org/wiki/White_point

I have sorted them in this order. But, my actualy tests are not following the charts. For some reason A is more blue than any of them yet it looks red according to the chart and temperature.

Is this a bug that A shows up blue or do I not understand what is going on?

Thanks!

suvakas · Post by **suvakas** » Tue Mar 20, 2007 8:01 pm

The color shows what is considered to be white tone in the scene. It is not an image filter that makes the image more red or blue.
For example A is used for regular light bulbs. The regular bulb is sooo yellow. When you use A, then the bulb color is taken as white and it will be presented as white on the image (without using A for white balance the bulb would be yellow).
So as far as I understand, then that color in Wiki shows what tone it takes as being white in the scene.
(someone correct me if i'm wrong)

Suvakas

Kram1032 · Post by **Kram1032** » Wed Mar 21, 2007 2:13 am

I also understood that like this

You have to turn the whole thing from top to bottom, I guess...
Try it and tell me, if I'm right

Kram1032 · Post by **Kram1032** » Wed Mar 21, 2007 2:15 am

Ah, I got a clue! You can order them after the temperature!

The forums bg is at about 8100K

Edit: at least at my screen settings

suvakas · Post by **suvakas** » Wed Mar 21, 2007 2:31 am

lol

Suvakas

Wedge · Post by **Wedge** » Fri Mar 23, 2007 10:23 pm

Thanks but I still dont understand why A turns everything blue.

Is it because when A, being very low temp, tried to map that temp as white, and everything is mostly very bright already since it is a sky environment, that A then makes it all blue? (in my test scene)

If that is true then I can understand it now. Thanks again for the input.

mrCarnivore · Post by **mrCarnivore** » Fri Mar 23, 2007 10:30 pm

Yes, you got it right.

If a more red-ish colour is selected as white then everything else will look less red which results in a cyan/blue-ish colour-tint.

Same is true for the other way round.

Wedge · Post by **Wedge** » Sat Mar 24, 2007 5:38 pm

Alright! Thanks! Next time I'll post in the Indigo general section when I have one of these questions.

White Balance A showing blue instead of red

White Balance A showing blue instead of red

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