Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Jan U. Hasecke
Am 14.11.18 um 16:04 schrieb Peter Rolf: > Mh, the file size of "ISOcoated_v2_300_eci.icc" is around 1.7MB. I > highly doubt that ConTeXt can compress it into a 10KB PDF. > > But I'm not so sure if PDF/X-3 needs embedding (there was an exception). > Never used it (only PDF/X-4p) and I can't

Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Peter Rolf
Am 2018-11-14 um 15:36 schrieb Jan U. Hasecke: > Thanks a lot, Peter. > > Am 14.11.18 um 14:58 schrieb Peter Rolf: >> Hi Jan, >> >> I donno if things have changed (ConTeXt is a fast moving target), so >> take my answers with a grain of salt. >> >> (1) >> AFAIK there is no ACTIVE color management

Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Jan U. Hasecke
Thanks a lot, Peter. Am 14.11.18 um 14:58 schrieb Peter Rolf: > Hi Jan, > > I donno if things have changed (ConTeXt is a fast moving target), so > take my answers with a grain of salt. > > (1) > AFAIK there is no ACTIVE color management in ConTeXt in the sense that > there is an automatic color

Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Peter Rolf
Hi Jan, I donno if things have changed (ConTeXt is a fast moving target), so take my answers with a grain of salt. (1) AFAIK there is no ACTIVE color management in ConTeXt in the sense that there is an automatic color conversion from one profiled(!) colorspace into another profiled color space.

Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Jan U. Hasecke
I forgot the archive. :-( Am 14.11.18 um 11:39 schrieb Jan U. Hasecke: > Hi all, > > attached you find my colormanagement tests and I need your help to > understand and debug the situation. > > I am testing together with a friend of mine, a professional > colormanager, who does not know

Re: [NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-14 Thread Jan U. Hasecke
Hi all, attached you find my colormanagement tests and I need your help to understand and debug the situation. I am testing together with a friend of mine, a professional colormanager, who does not know ConTeXt. There are several files in the archive: The differences in the files are the

[NTG-context] Issues with RGB to CMYK conversion with color profiles (was: Colormanagement)

2018-11-12 Thread Jan U. Hasecke
Hi all, with the following file I tested the color conversion of context. I get the same CMYK-values in the output pdf file using different color profiles. A friend of mine can test the color values of PDF with a special software. My guess: the profiles are not used during pdf generation. You