RE: Silly question department, Display Media White Point
RE: Silly question department, Display Media White Point
- Subject: RE: Silly question department, Display Media White Point
- From: Roger Breton <email@hidden>
- Date: Fri, 27 Feb 2015 10:11:47 -0500
Andrew,
> Explain ProPhoto RGB to me,
You have a point. Silly me to even suggest such a comparison with spaces like ProPhoto. My bad.
> Tell me how this works with a CMYK device that is quite real world, using real inks and papers and mechanically opreated bits
> and pieces?
Again, your points are well taken.
> A data set as I understand it is something real, measured and hopefully an agreed upon target for a behavior.
> I see nothing synthetic about it at all.
I don't want to belabor the point but it is interesting to note that "idealized behaviors" are built into "real, measured and agreed upon datasets". "Idealized" to the point that it could be argued they become "synthetic".
> Making a specification for how a CMYK press and all it entails should produce a group of color numbers is a specification and I've asked
> how it differs from what TR001 provided years ago. A new specification doesn't make the process it defines synthetic but maybe we
> need to stop here and define what we mean by a synthetic color space.
You are 100% right, Mr. Rodney. We can agree that, in the world of RGB spaces, some were designed for very specific purposes while some were derived straight from actual display devices like ColormatchRGB. Why couldn't the same logic apply in CMYK spaces? Which is, in my view, what IDEAlliance has done with ISO-15339, each "spaces" is a "scaling" if you will of more basic color spaces, like Russian dolls. And they make no bones about it, in their presentations, that the industry is at a point where it does not need to have "datasets" based on actual print runs anymore. It's just a collection of "gamuts" (I'm very tempted to throw the word "synthetic" here but I suspect I'll be forever flamed for daring) that have interesting properties. The underlying hypothesis is that any printers, anywhere, would take these "Reference" datasets and use them as a basis for deriving their own, adapted presumably for their very own conditions of printing.
Graeme wrote:
> If you sent it directly to press, you wouldn't expect terribly good
> color reproduction
To which Andrew replied:
> Agreed. So Roger could create such a space, it just wouldn’t work ;-)
Keep in mind, guys, that "modern" printers are becoming more and more adept at converting colors in production, either at the time of ripping PDFs or at the time of generating plates, with device link profiles, for whatever purposes, be it ink optimization or simply ink reduction, as when converting separations made for coated glossy papers to uncoated papers.
Thank you for your invaluable inputs!!!
Best / Roger
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| References: | |
| | >Re: Silly question department, Display Media White Point (From: John Lund <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: Karsten Krüger <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: G Mike Adams <email@hidden>) |
| | >RE: Silly question department, Display Media White Point (From: Roger Breton <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: G Mike Adams <email@hidden>) |
| | >RE: Silly question department, Display Media White Point (From: Roger Breton <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: G Mike Adams <email@hidden>) |
| | >RE: Silly question department, Display Media White Point (From: Roger Breton <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: Andrew Rodney <email@hidden>) |
| | >RE: Silly question department, Display Media White Point (From: Roger Breton <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: Andrew Rodney <email@hidden>) |
| | >RE: Silly question department, Display Media White Point (From: Roger Breton <email@hidden>) |
| | >Re: Silly question department, Display Media White Point (From: Andrew Rodney <email@hidden>) |