[Scribus] Colour management confusion

Plinnell mrdocs
Fri Nov 16 18:06:28 CET 2007

On Friday 16 November 2007 02:50:34 Hal V. Engel wrote:
> On Thursday 15 November 2007 16:59:52 rockbeer wrote:
> > Hal V. Engel wrote:
> > > What color space are you using for the cmyk color in Scribus and in
> > > Photoshop?
> > > Are they the same?
> >
> > They aren't the same - they can't be, as the options available in each
> > application are quite different. My cm setup is:
> >
> > Photoshop (5.5) CMYK setup:
> > Model: Built in (ICC is unavailable - any ideas why, anyone?)
> > Ink Colours: Eurostandard coated (as advised by my printer)
> >
> > Scribus cmyk setup:
> > cmyk pictures & printer: Euroscale coated v2 (closest option to
> > Eurostandard coated, I believe)
> >
> > All the above running on Win XP
> >
> > Does that help?
> OK you just answered your own question.  The reason the colors look
> different is because they are different becasue they are in different color
> spaces.  In order to get them to appear the same when they have the same
> CMYK (or RGB) values they need to be in the same color space.  You can
> prove this to yourself by pulling up an image in photoshop and assigning
> different profiles to it.  This process does not change the numeric values
> of any of the colors in the image but the colors displayed on your monitor
> will change as you assign different profiles.
> As to why Photoshop will not let you set a CMYK profile perhaps this has
> something to do with how old of a version you are using.  They are up to
> version 9.0 (CS3) at this time.  Someone with more Photoshop background
> than me might be able to confirm that this is the issue.
> Since your printer has advised using Eurostandard coated as your OUTPUT
> color space why are you using a different profile?  I was able to find a
> place to get a download of that profile.   Also if the printer advised
> using it perhaps they can supply a copy of it to you.   I think you would
> be much happer if you worked in a color space intended for image editing
> and then created an output file for your printer in the color space that
> they want. That is the normal process and most CM professionals advise
> against working in a small gamut output color space like those for
> printers.
> > (Why is colour management so difficult, he asks plaintively. Surely it
> > could be managed so much better at OS level, i.e. a universal OS-level
> > tool that allows you to input all relevant details, configure hardware
> > profiles, and select different setups based on the task at hand, and that
> > client apps can obtain their settings from rather than having to
> > configure each client independently and just hope they play nicely
> > together.)
> Since you are using Windows you need to ask Bill and company this question.
> This is what we are working toward for our open systems but it will take us
> a while to get there.  Because the Mac was the original machine that was
> used for this type of work it's systems are more advanced and some but not
> all of what you want is available there.
> But you are correct that it would be easier if the underlaying system
> provided better support and if the applications (this includes device
> driver too) used that support.  But even if that was the case you would
> still need to have a basic understanding of how this worked to be able to
> properly configure such a system.  So even with a system like you envision
> there is still a significant learning curve to be able to set up a proper
> color managed work flow.
> Hal
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Aside from Hal's enligtening reply, from my experience Photoshop 5.0 and 5.5 
were usable for color management, but it was nowhere near as intuituve or 
clear as PS 6.0+ 

There are some excellent hints here about Photoshop going back to PS 5 and 
color management: http://www.digitaldog.net/tips/ 

Andrew is considered one of the real gurus of color management.


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