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Re: Managing Merge Colors in Photoshop
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Re: Managing Merge Colors in Photoshop


  • Subject: Re: Managing Merge Colors in Photoshop
  • From: Roger Breton <email@hidden>
  • Date: Wed, 01 Dec 2004 14:26:53 -0500

Ray,

> Are the spot colors you have selected in the gamut of the CMYK working
> space....or are they very saturated colors that are outside the gamut?
> If they are outside the gamut they will be very muted after conversion.
> They will be truncated into the gamut.  What are the Lab values of the
> spot colors?
>
> Ray

Blue PMS 2765 C     Lab   9  26 -42
Mauve PMS 233 C       Lab  44 75 -14
Process Yellow

I'll admit that blue must be way out of any gamut.

It is plain to see that some compression is going on. Perhaps Photoshop is
using the PMS Lab values assigned to each spot channels as a Source in the
conversion and is matching to whatever CMYK working space currently selected
as the implicit Destination. I'd just wish that was explicit or documented
somewhere.

Thanks for your help,

Roger Breton  |  Laval, Canada  |  email@hidden
http://pages.infinit.net/graxx


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