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Outstanding introduction to a subject I had not considered.
The section on scans of negative films was particularly informative.
where is the comparison with Adobe Wide RGB
These are probably very good color spaces in the context of high-bits and wide-gamut devices. However, one could argue "why do we need another wide gamut? ... Adobe Wide RGB encompasses everything!" (altho I note that these, in question, do go beyond Adobe Wide's blue XY). Still, you should have commented on the wide gamut that comes with Photoshop(??) :o)
Re: Wide Gamut RGB
shAf wrote:
However, one could argue "why do we need
another wide gamut? ... Adobe Wide RGB
encompasses everything!" (altho I note
that these, in question, do go beyond Adobe
Wide's blue XY). Still, you should have
commented on the wide gamut that comes
with Photoshop(??) :o)
First, please note that the second graf after the "Watch This Space" heading talks specifically about the Wide Gamut RGB that ships with Photoshop. It's pretty ill-behaved, so I didn't mention that it most certainly doesn't encompass everything. It's quite weak in the blues, but it can also clip yellows and oranges that are quite common in Ektachrome and Velvia captures.
If you meant Adobe RGB (1998), I wouldn't consider it large enough to qualify as a Wide Gamut space.
Working space gamma
Working space gamma is probably a topic that deserves its own discussion. If you're using high-bit files, the working space gamma is a lot less important than when you use 24-bit ones, but you're right: it's a topic that needs addressing. I'll do so in a future column.
excellent insight, but ...
The comparison of PhotoproRGB and EktaspaceRGB was relevant, but you made no mention of a significant difference between the two .... "gamma". With respect to your seemingly ideal wide-gamut space for negatives (PhotoproRGB and gamma=1.8) and your preferred 24bit color space (BruceRGB and gamma=2.2), your article begs for an explanation of how gamma relates to colorspace in the context of color depth. Still, an excellent discussion of the usefulness of both of these respected color spaces ... thanx :o)
Excellent explanation of a complex topic
Once again Bruce Fraser has done a great job of making the complex comprehensible to the rest of us. Even more significantly he continues to bring up the issues which others writing in this field avoid because they are viewed as being too complex. Having read through way too many over simplifications of color management in major graphic arts publications, it is nice to see creativepro treating their readers like the intelligent, technically savvy people that they are. Well done to you both.