Re: ISO 12647-7
Re: ISO 12647-7
- Subject: Re: ISO 12647-7
- From: Rolf Gierling <email@hidden>
- Date: Thu, 24 May 2007 15:03:58 +0200
Hello Lee, hello list,
I try to summarize and complete the tolerances in regard of
ISO 12647-7, proofing system tolerances and the fogra mediawedge
as far as I can quote them from the fogra:
Paper Colour max 3 ∆E
Primaries max 5 ∆E
All Patches of chart max 6 ∆E
Average of all patches of chart max 3 ∆E
Grey balance patches ( G10 - G100) Average ∆H of 1.5
Primaries max ∆H of 2.5
Additionally, there are tolerances measured on bigger targets, namely
IT8-7.3, IT8-7.4 or ECI2002:
Average of all patches max 4 ∆E
Average of all patches on the outer gamut max 4 ∆E
(Lee, do you have more information there?)
Average of 95% of all patches max 6 ∆E
All these details can also be found in a fogra newsletter here:
http://www.fogra.org/products-en/download/Fogra_News_02web.pdf
Regards
Rolf Gierling
Am 23.05.2007 um 16:41 schrieb Lee Badham:
Hi List,
OK, now I know how ∆H is calculated, i'm looking further into the
tolerances specified within the standard.
Paper Colour max 3∆E
All Patches of chart 6∆E
Average of all patches of chart 3∆E
Grey balance patches Average ∆H of 1.5 - So no maximum?
Outer gamut patches Average 4∆E - the list of the outer gamut patches
lists paper, primary and set CMYK patches
So is there now no specific primary tolerance?
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3rd Edition July 2006
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