In article <3dd0fe06@news.povray.org>,
 Michael Andrews <m.c### [at] readingacuk> wrote:

> I guess you are applying it to each of the colour channels separately? 
> Could you add an option to apply it to the 'luminosity' of the pixel 
> instead? This would keep the 'hue' and 'saturation' of the colour 
> unchanged, just compress the brightness ...

Nice idea, but I don't think that's how either film or the eye works. 
They both have red-green-blue sensitive portions that are probably 
affected equally (or nearly so) by the processes that cause this.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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