[argyllcms] Re: Devicelink Black Generation
- From: Fabrizio Levati <fabrizio.levati@xxxxxxxxxxxxxx>
- To: <argyllcms@xxxxxxxxxxxxx>
- Date: Thu, 07 Aug 2008 15:43:55 +0200
Klaus,
You are perfectly right! Through the icclu I get pretty similar results
MacBookPro:~ fabrizio$ icclu -s100 STS_test.icc
0 0 0 0
0.000000 0.000000 0.000000 0.000000 [CMYK] -> Lut -> 0.000000 0.000000
0.000000 0.000000 [CMYK]
0 0 0 10
0.000000 0.000000 0.000000 10.000000 [CMYK] -> Lut -> 0.000000 0.000000
0.000000 4.947585 [CMYK]
0 0 0 50
0.000000 0.000000 0.000000 50.000000 [CMYK] -> Lut -> 0.000000 0.000000
0.000000 40.137331 [CMYK]
0 0 0 100
0.000000 0.000000 0.000000 100.000000 [CMYK] -> Lut -> 0.000000 0.000000
0.000000 99.206531 [CMYK]
It seems that something is wrong with the DVLP conversion performed with
Callas. I will investigate the issue further and let you know.
As for the moment, thanks a lot.
Fabrizio
Il 07/08/08 14:44, "Klaus Karcher" <lists@xxxxxxxxxxxxxxxxx> ha scritto:
> Fabrizio Levati schrieb:
>> Klaus,
>> No luck even with littleCMS.
>> I tried the option you suggested, then I read again what you posted and
>> realized that the ISOnewspaper26v4.icc I am using had a GCR with maxK
>> limited to 95%. At this point I tried editing the original profile and
>> recreated the DVLP but, as soon as I use the profile to convert my PDF file
>> (I am using Callas PDF toolbox to do so), I get my 100K text transformed to
>> something like 78C 72M 62Y 81K that is by the way exceeding the original
>> profile TAC limit.
>> Any idea about where am I going wrong?
>>
>
> ... here is my very crude proof of concept:
>
> kmb:~ klaus$ mkdir fabrizio
>
> kmb:~ klaus$ cd fabrizio/
>
> kmb:fabrizio klaus$ curl http://www.color.org/IFRA26L.txt -o IFRA26L.txt
>
> kmb:fabrizio klaus$ logo2cgats IFRA26L.txt IFRA26
>
> kmb:fabrizio klaus$ colprof -kr -l240 -L100 -cpp -dpp -S
> /Library/ColorSync/Profiles/ISOwebcoated.icc IFRA26
>
> kmb:fabrizio klaus$ icclink -t0 -f1 -o web2news_lcms.icc
> /Library/ColorSync/Profiles/ISOwebcoated.icc IFRA26.icc
>
> kmb:fabrizio klaus$ icclu -s100 web2news_lcms.icc
> 0 0 0 0
> 0.000000 0.000000 0.000000 0.000000 [CMYK] -> Lut -> 0.000000 0.000000
> 0.000000 0.000000 [CMYK]
> 0 0 0 10
> 0.000000 0.000000 0.000000 10.000000 [CMYK] -> Lut -> 0.000000 0.000000
> 0.000000 10.502785 [CMYK]
> 0 0 0 50
> 0.000000 0.000000 0.000000 50.000000 [CMYK] -> Lut -> 0.000000 0.000000
> 0.000000 63.166247 [CMYK]
> 0 0 0 100
> 0.000000 0.000000 0.000000 100.000000 [CMYK] -> Lut -> 0.000000 0.000000
> 0.000000 100.000000 [CMYK]
>
> Klaus
>
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