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You are correct Mike but I think it is something inherent in the 5DH sensitivity to H Alpha. If I increase the green, the green noise in the background sticks out like the proverbial. The Hutech LPR filter does not help as it is missing data in the green and yellow range of wavelengths. So I think what you are seeing is a faithful rendition of what the camera 'saw'. The other complicating factors of course are my eyesight vs world and monitor type and calibration.
I once mentioned to the Chief of the division of CSIRO I used to work for 'colour does not exist, it is merely the ratio of intensities as registered by the three different cones in you eyes and the sensation is interpreted by the brain as colour'. He at first did not believe me. He does now (I think).
Look up Land effect. You can produce colour in an image produced by two or three different black and white positives taken of the same scene through different coloured filters and superimposing the images with slide projectors.
This works even if the filters are both yellow but pass different wavelengths.
Thanks for the advice anyway as none of us has all knowledge anyway, even if we think we do.
What was that about unknown unknowns etc...
Bert
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