[Openicc] CUPS Color Management under Linux... (what is to do ?)

[Chris Murphy]

On Feb 10, 2011, at 1:00 PM, Leonard Rosenthol wrote:

> On Thu, Feb 10, 2011 at 2:23 PM, Chris Murphy <lists at colorremedies.com> wrote:
>> PDFs can only use mntr & prtr profiles.
> 
> That's not good. So the new ICC v4 sRGB profile cannot be used in PDF at all? That is a 'spac' class profile.
> 
> 
> Never seen a 'spac' profile, but it would need to be converted to one of the others to be used in PDF.  What uses them today?

sRGB v4 uses it. AFAIK it doesn't come in a mntr class version, nor should it. Same for Adobe RGB and ProPhoto RGB. It's a mistake of history that they were ever encoded as mntr class profiles. They are not spaces that describe any display device.

And spac class can't always be converted because usually they are device independent, designed to enable conversion between non-device color spaces like XYZ, Lab, etc. For example Linotype-Hell saved all TIFFs as Lab LH.

Chris Murphy
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