For a long time I've had a file from www.digitaldog.net that shows various test patterns and subjects.
But the other day when I was using it to figure out which profile and options printed best on my paper and ink, I noticed that the ColorChecker image reproduction was rather poor in some areas compared to the X-Rite passport.
I realized that the file, a jpeg, is S-RGB. But my printer does better than that! It’s sold as a “wide gamut” printer with hexachrome primaries, in fact. My monitor is Adobe-RGB. And the camera workflow uses files that are ProPhoto (In an earlier question I asked about why Lightroom etc. was using this as a default. So using ProPhoto is something specific to a raw photo workflow and graphics arts industry people and web designers try and work in a narrow gamut; that’s why I’m asking this question here.)
So, is there a file I can use that is put together with the same purpose, but is made with ProPhoto color space and really shows information e.g. samples as you’d get with raw photos?
Even something that’s just a set of colorbars and ColorChecker patches generated digitally as pure values, stored as ProPhoto color space, would be helpful.