Quote:
Originally Posted by RobF
I'm always getting in trouble for my crazy analogies, but it almost sounds like polar alignment. The search for the holy grail of perfection, that isn't ever quite possible!  |
The problem is that it isn't a single one-off ratio. Atmospheric effects mean that the sensitivity of a scope/camera at different colours is changing all the time.
Quote:
Originally Posted by RobF
Rick, I've been in love with "linear fit" within PI recently. I know its not a proper color calibration tool, but it seems to do a great job of getting R, G and B in the same ball park before serious processing begins.
|
Nothing wrong with that, Rob. Using LinearFit will just balance the channels. I often use this technique for narrowband. An unlinked stretch does much the same thing.
Cheers,
Rick.