[Openicc] colord 0.1.0 released!

[Chris Murphy]

On Jan 19, 2011, at 6:35 PM, Leonard Rosenthol wrote:

> On Wed, Jan 19, 2011 at 7:49 PM, Chris Murphy <lists at colorremedies.com> wrote:
> My understanding is that in PDF/X-3 (and 4 and 5), that /DeviceRGB =! ICCBased and is effectively "no color management" in the context of outputting to the OutputIntent device.
> 
> There is NO DeviceRGB allowed in a PDF/X-3/4/5 file - all RGB data MUST be associated with an ICC profile.  You can have DeviceCMYK and DeviceGray - though they are actually only device values for the embedded OutputIntent.   The only "true" device-dependent colors in a PDF/X file are Spot/Separation colors, since they are resolved independently on each device.

OK at the expense of embarrassing myself, I'm going to ask it anyway: are you sure?

I ask this because somewhere I was given the distinct impression that PDF/X-3 does allow RGB OutputIntents, in which case objects could be /DeviceRGB. The (rational) conclusion is that you could have /DeviceRGB *OR* /DeviceCMYK but not both, because you can't have two OutputIntents.


Chris Murphy
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