Spot color and its alternate color space
Spot color and its alternate color space
- Subject: Spot color and its alternate color space
- From: Rasmus Olsen <email@hidden>
- Date: Thu, 2 Jul 2009 10:26:32 +0200
- Acceptlanguage: da-DK
- Thread-topic: Spot color and its alternate color space
Knowledgeable gentleman and ladies,
Regarding the transformation of a spot color's alternate color in LAB to DeviceCMYK (as dictated by the PDF/X-1 standard) - does rendering intents play any role at all?
I've tested this in Acrobat with a PDF exported from InDesign (using the Pantone solid warm red) - one with alternate color in LAB, the other in DeviceCMYK. Using a combination of different destinations (eg. ISO Coated v2 and ISO Newspaper) with the four RIs I can't measure any difference at all - converting the spot to process via the inkmanager in Acrobat gives me same numbers on all the test versions.
Working with the mentioned tests I've also noticed something peculiar in InDesign: Browsing through the Pantone swatch libraries it appears that the solid swatches defaults to DeviceCMYK, the pastels are all LAB, matellic coated mixed DeviceCMYK/LAB. Why this difference?
Using the "Use standard LAB values for spot colors" function via the Inkmanager only seems to affect the Pantone swatches that defaults to DeviceCMYK - I expected the opposite to happen with the LAB swatches, but it didn't ?
Thanks!
--
Best regards
Rasmus Olsen
Premedia and automation
D: +45 8935 1504
digital xpress as
Filmbyen 2
8100 Aarhus C
Denmark
P: +45 8935 1500
F: +45 8935 1501
www.dxp.dk
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