RSS News FeedRe How to remove fluorescent yellowness from photo
Message-ID:<ti1om.1071$Jd7.250@nwrddc02.gnilink.net>
Subject:
Re: How to remove fluorescent yellowness from photo?
Date:Fri, 4 Sep 2009 06:09:45 +0100
A wrote:
>
> I have some photos that are overly yellow
> due to taking them indoors near fluorescent lights.
> How can I remote that yellowness?
> Is it a matter of reducing the "temperature"?
> Or should I desaturate the yellow component?
It is difficult to manually correct a color cast problem using the Color
Balance tool (Colors->Color balance). A better method is to use the
whitebalance.scm script (http://luca.dealfaro.org/Whitebalance). On a
Windows machine, you install the script by copying it to
C:\Program Files\Gimp-2.0\share\gimp\2.0\scripts
To use the script, you use the Color Picker tool (the tool with a
eyedropper icon) and sample the color of a part of the image which
should be white or neutral gray if there was no color cast. Then you
invoke the script (Filters->Colors->White balance) and choose the "Make
foreground gray" mode.
If you have several pictures taken under the same lighting condition but
some of them have no neutral gray areas, you can use the color sampled
from one picture to correct the color cast problem in another.
Good luck.