[argyllcms] Re: Adobe BPC (maybe OT?)
- From: Bill Morse <whm.lists@xxxxxxxxxxx>
- To: <argyllcms@xxxxxxxxxxxxx>
- Date: Thu, 13 Apr 2006 11:49:04 -0400
Hi Graeme-
This may be OT, but for those of us who have not yet made the jump to
Argyll, could you apply these thoughts to profile creation in other
packages, say ColorGPS (by ErgoSoft) or Colorburst?
Thanks,
Bill Morse
Wm. Morse Editions
450 Harrison Ave. Studio 227
Boston, MA 02118
(617) 429-3298
http://www.MorseEditions.com
PS- Please note new email and web address
on 4/12/06 10:00 PM, Graeme Gill wrote:
>
> A couple people have asked about it, so I'll summarize
> the answer here.
>
> There's a general thought that using Adobe Black Point compensation
> when making use of ICC profiles is "mostly the right thing to do".
>
> For profile that are created without specific gamut mapping,
> this may well be the case.
>
> BPC is "map the grey axis" type, crude form of runtime gamut mapping,
> hence it often helps when linking between profiles that are unaware
> of each other.
>
> If however, you've created a destination profile using Argyll,
> and set it up to have proper gamut mapping for a certain
> source profile (ie. you've used "profile -options -S source.icm destination"),
> and you're using that profile pair with perceptual or saturation intent
> in an Adobe product, then BPC should NOT be used. It's not needed, the
> gamut mapping has already been setup properly in the destination
> B2A tables by Argyll.
>
> Graeme Gill.
>
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