Re: The color of gray
Re: The color of gray
- Subject: Re: The color of gray
- From: Peter Miles <email@hidden>
- Date: Mon, 01 Sep 2014 18:20:06 +1200
Roger Breton wrote:
> Last but not least, will AdobeRGB 1998 and ProPhotoRGB gray to print gray with different color with absolute colorimetric rendering? You don't have to be near your printer to answer that question. A quick visit to Photoshop reveals that RGB 128,128,128 maps out to L54 with adobeRGB and L61 with ProPhotoRGB, because of the difference in gamma (2.2 vs 1.8). But both map out to a* and b* = 0. This difference in Lab will carry to your printer, regardless of the rendering intent but both will appear the same 'gray', just with different Lightness value. But one will not appear warm gray while the other appear cool gray, if that's your question.
Hi Roger
Thanks so much for your time. Really interesting replies. I'm working my way through them and digesting what is being said.
Regarding the print, I confirmed that what you say is true. I also ran two prints (absolute colorimetric AdobeRGB and ProPhotoRGB) and they do indeed print grays with an identical hue relative to each other.
What I don't understand is WHY the grays print with an identical hues.
If the white points of the two color space are D50 and D65 then surely the gray axis of those color spaces wont have the same hue relative to each other?
So what, exactly is being "absolutely rendered" when i ask photoshop to print absolute colorimetric? What am I missing?
Regards
Peter Miles
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