Comments for Jan-Peter Homann

Comment on Book Digital Color Management by iLico

iLico — Mon, 13 Aug 2012 19:09:28 +0000

hello Jan,

I am a studying.
can you indicate sources about the mathematical background of color management, especially DeviceLink generation?

cheers,

iLico

Comment on Book Digital Color Management by homann

homann — Mon, 13 Aug 2012 16:19:17 +0000

Hello iLico,

Writing the third edition, I had the plan to publish a second book with step by step “recepts” for colormanagement to implement ISO 12647-2.
But as such book would need screenshots of about 20 differnt software solutions, a printed book would be outdated very fast.

For the 4. edition there will be no “Praxisband”.

Regards
Jan-Peter

Comment on Book Digital Color Management by iLico

iLico — Mon, 13 Aug 2012 15:45:22 +0000

hello Jan,

what does does “Praxisband”, which is mentioned several times in the german edition of your book refer to? is it another book?

cheers,

iLico

Comment on Book Digital Color Management by Preparing to teach is a learning process | Lukas Engqvist (Artcoach.se)

Preparing to teach is a learning process | Lukas Engqvist (Artcoach.se) — Wed, 18 May 2011 13:52:16 +0000

[...] like to thank Jan-Peter Homann who gave me permission to use some of his diagrams from the book Digital Color Management in my [...]

Comment on Separation of RGB-images by Lukas Engqvist

Lukas Engqvist — Wed, 18 May 2011 13:46:13 +0000

Thank you for the information about these profiles, I have been looking for a place to point people to when holding courses.

Comment on Book Digital Color Management by homann

homann — Fri, 04 Jun 2010 14:06:08 +0000

To Go Jov,
EfI is (now) mentioned with Links to ColorProof XF and the Color Verifier on the start page.
Please see also further information on calibration and profile optimization at proofing
From my point of view, EfI ColorProof has today not a clear differentiation between calibration and and profile optimization. (This may change in future…)
Calibration should be bring the proofer for a defined media / ink combination to a “gold standard” defined by proofing system vendor or by the user.
If the proofing vendor delivers devicelink profiles optimized for simulating printing standards like FOGRA / PSO, GRACoL, SWOP on a calibrated system, the user has to do the calibration ONCE (!!) and all printing standard simulations are spot on.
The currenty available optimization in Efi Colorproof - so far as I know - has to be done for every combination of printing standard and ink / media combination.
If on a proofing system with a semimatte medium three printing standards are simulated, the optimization in EfI Colorproof has to be done for all three combinations.

Comment on Proofing by Madhura Mahajan

Madhura Mahajan — Fri, 04 Jun 2010 13:43:51 +0000

Dear Mr. Hoffman,

Hello. We have an Epson Proofer 7900. It has a star proof rip. How do I know whether it is with or without optimised Device Link Profiles and calibrated for PSO or SWOP or GRACol

Thanks,

Comment on Book Digital Color Management by Go Jov

Go Jov — Fri, 23 Apr 2010 15:12:58 +0000

I am surprised, that author of this book never mention EFI.
i like to what is reason?

Comment on PDF/X-1a by homann

homann — Sun, 07 Feb 2010 20:55:22 +0000

Dear Ecir Hany,
The PDF/X-1a:2003 standard is available, through http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=39938

There is no free version. Based on PDF/X-1a are the GWG specs which could be downloaded free at http://www.gwg.org/GWGversion4.phtml

If you have any questions concerning the usage of the GWG specs, I recommend the GWG forum at http://forum.gwg.org/ (currently a little bit quiet…)

Best regards
Jan-Peter Homann

Comment on PDF/X-1a by Ecir Hana

Ecir Hana — Fri, 05 Feb 2010 16:49:27 +0000

Dear Mr. Homann,

please, I have one question - where can I get PDF/X-1a:2003 standard? Do I have to buy it? I’m asking because I can freely get PDF 1.7 reference from Adobe site so I thought it would be possible to obtain the former spec as well.