Color accurate workflows (was in search of a D50 Editing colorspace)
Color accurate workflows (was in search of a D50 Editing colorspace)
- Subject: Color accurate workflows (was in search of a D50 Editing colorspace)
- From: Peter Miles <email@hidden>
- Date: Fri, 05 Sep 2014 09:51:33 +1200
of my previous post I wrote:
>
> Conclusions
> ... absolute colorimetric from an RGB color space will work, using Adobe color management…
> 1: Only if the source RGB space has a D50 white point.
>
I have been reflecting on the implications of the above as it pertains to the workflow from a profiled RGB flatbed scanner and moving color meaning from scanner colorspace to editing colorspace, or from scanner color space to printer colorspace.
Going to the trouble of profiling a scanner using It8 target is a great idea.
All going well, potentially the colors now encoded in the scans in my 'custom' profiled scanner space, I might well be near the original.
I can not tell by looking at my monitor because the colors that are displayed on my monitor have been scaled the to my monitors white point.
But none the less, potentially, there they are encoded in my custom scanner color space inside of photoshop.
However unless the scanner space white point happens to be D50, any attempt to move the absolute color meaning of pixels out of the scanner colorspace using Adobe will fail. Because Adobe will first invoke a relative colorimetric transform from the scanner space to the profile connection space (D50) before it moves it to the destination colorspace. And in that process the absolute color meaning of the original scanner pixels will be lost. in the same way it gets lost when it's being scaled to my monitors white point.
The implications of this to folk who attempt to maintain the integrity of digitally encoded colors of art works as they work on seem to me to be significant.
At least to me anyway
Regards
Peter Miles
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