Re: PRMG gamut
Re: PRMG gamut
- Subject: Re: PRMG gamut
- From: Roger Breton <email@hidden>
- Date: Thu, 28 Feb 2008 20:31:10 -0500
Klaus,
I downloaded your PDF. Thank you. I see many figures showing "clipping". I
was under the impression (wrong, perhaps?) that PRMG stood for "perceptual"
and therefore "no clipping". Desaturation, maybe, but no clipping.
Also, isn't the PRMG much 'smaller' than +/-128 in a* and b*? I had the
impression that PRMG was a subset of the ICC Lab PCS. Here, in your
diagrams, I have the impression that it is still very big. Is it as big as
sRGB? Which is one of the PRMG being developped with HP?
> Here is Graeme's page with some notes about ICC v4 and the PRMG:
> <http://argyllcms.com/doc8/iccgamutmapping.html>
>
> It took a while until I understood and accepted his sobering conclusion.
>
> I tried to illustrate the pitfalls schematically in this PDF:
> <http://digitalproof.info/colorsync-users/GamutMapping.pdf>
>
> Klaus Karcher
Roger Breton
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