Hello,
we choose a max black 100 - and maximum total ink coverage of 350
percent - in order to allow for setting maximum contrast in small areas
such as crisp details.
As a rule of thumb in conventional scanning there was a 5/95 rule (or
3/97 for high quality) meaning that light and shadow areas should not
exceed these values.
In an rgb-scan this is a shadow tone of say rgb 8/8/8. If you convert
this tone using the ECI offset profile you will see cmyk values below
100 k - in fact:
84/82/74/94
Best regards,
Florian Suessl
Am 26.03.2004 um 08:20 schrieb Bestmann, Guenter 3887 S-RD-PN32:
Hello,
you are right. We at Heidelberg prefer Kmax=95%. But the majority of
the eci members involved in making the characterization data and the
eci profils for the Altona Test Suite prefers Kmax=100%.
Best regards,
Günter Bestmann
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Dr. Guenter Bestmann
Heidelberger Druckmaschinen AG
Sheetfed R&D Prinect
Dr.-Hell-Straße
D-24107 Kiel, Germany
Tel.: +49 (0) 431/3863887
Mail: Guenter.Bestmann(a)Heidelberg.com
-----Ursprüngliche Nachricht-----
Von: eci-en-admin(a)lists.transmedia.de
[mailto:eci-en-admin@lists.transmedia.de]Im Auftrag von Jón A Sandholt
Gesendet: Donnerstag, 25. März 2004 23:17
An: eci-en(a)lists.transmedia.de
Betreff: [ECI-EN] Question about the new ECI pressprofiles
I have been looking at the new ECI ISO pressprofiles and I notice that
the Max Black goes as high as 100%
Why is that?Is it not dangerous to let the black go all the way up to
100% instead of forX 95%?
Best regards.
Jón A Sandholt
--
Florian Suessl | Director Technology
MetaDesign AG | Leibnizstrasse 65 | 10629 Berlin
+49 30 590 054 246 | fax +49 30 590 054 114 | fsuessl(a)metadesign.de
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http://www.metadesign.de