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Hi,
When doing color images from DSLR color cameras it could be a bit frustrating to find correct color balance. If you could get to know your DSLR camera's own RGB scaling factors it could be a starting point how to set the scaling factors. With the tool DCRaw you can get these values.

Here is a tutorial I have wrote how to use DCRaw to find these values:
http://www.astrofriend.eu/astronomy/tutorials/tutorial-rgb-multipliers/tutorial-rgb-multipliers.html

I have only use it to my own Canon DSLR, but should work on all cameras that DCRaw support I think.

/Lars

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