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DPChallenge Forums >> Tips, Tricks, and Q&A >> Wrong white balance
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07/15/2002 04:29:39 PM · #1
Is there a standard set of color corrections I can apply to a slew of pictures I took without realizing that I had set the manual white balance to tungsten rather than the normal daylight that I took them in?

ie. what percentage change to each rgb channel do I need to make to remove the color cast?

PS (;>) : I'm not using photoshop so photoshop specific won't help, but PhotoPaint can do most of the same stuff photoshop does, although with more or less difficulty depending on what it is
07/15/2002 06:08:24 PM · #2
Is that Corel Photopaint or Ability Photopaint?

I don't know of a specific formula to convert from a tungsten white balance to a normal daylight white balance, BUT...

if Photopaint (whatever version you have) offers a Levels or a Curves command, then you may be in luck. Generally, on the Levels screens of most image editors you will see three "Picker" or "Swatch" icons-- one is black, one is grey, and one is white. Choose the grey one, and then go to your image and click on something (ANYTHING!) that is supposed to be neutral grey-- no matter how light or dark that shade of grey is supposed to be. This will automatically remove a significant portion of the color cast for you.

I hope that helps, or at leasts gets you started.

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