So here is my first step exploring ColorPerfect.
The ColorChecker was shot in Solux light with custom WB.
For ColorPerfect, the shot was processed with MakeTiff, opened in PhotoLine with ColorPerfect, Mode ColorPos, Perfect Raw checked. ProPhoto chosen as output space. The canned profile for the camera is automatically selected. There is no option for custom profiles at this time. The CC correction was left at the default..The color mode was left in RGB, because CP does not work with Lab (strangely, since the author states that Lab preserves what he calls Color Integrity).
In Iridient Developer, CA correction was enabled. Custom camera profile in, out and as working profile. The resulting TIF was opened in PhotoLine and converted to Lab.
In RawTherapee, CA correction was enabled. Custom camera profile in and out, ProPhoto as working profile (no choice of custom here). The Tif converted to Lab in PL.
For the screen shots, the monitor profile was: 5800K, WP 100 cd, BP 0.2 cd, gamma 1.8
Mesaurements: (with the DigitalColorMeter on my screen shots, RGB spreads disregarded/averaged)
Black patch: synth. 35, CP 34, ID 23, RT 26
White patch: synth. 238, CP 255, ID 236, RT 244
Middle Gray: synth. 101, CP 100, ID 93, RT 95
RT is somewhat pale overall. Both CP and RD seem close. CP seems "clearer", but in some cases (B1, B6, C5) clearer/brighter than the synth (!) - because it pushes the highlights? Because of this, I think my nod goes to ID.
This is my view with daylight in my room - I'll check tonight...
Next post: a real image.