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An unmodded camera is way less sensitive to Ha and in the red channel. That is true.
I don't know that a rote formula of increasing red 200% is the way to go. I would suggest each image may have different requirements.
In your image here the red is overdone so that your background is too red.
Shadows/highlights is a good tool to use. Try moving the highlights sliders and you may find that overblown core may still have data there.
Also it can be a bit of challenge to bring out the star colours with a DSLR but it can be done. There are some real DSLR experts on this forum. RB, Humayun and others are very good with it. I'd be asking them for their processing workflow.
Also you should consider modding your 350D or picking one up second hand (they are quite inexpensive these days). The improvement in sensitivity will blow you away.
Greg.
Last edited by gregbradley; 16-05-2010 at 10:07 AM.
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