as i understand, rec 2020 are primaries of a colorspace wich is not reachable actually by the technology of displays. It's a container of smaller gamut. For a grading workflow, is it better to work in P3 or REC709 for example, so we know the real primaries we are working in, and then convert it to rec2020 via a lut?
I'm questioning how works the mapping of colors in a rec2020 preset of a display that actually can displays 99% P3 maximum. If we send a 100% RED of the grading suite, the display show the max saturation of RED he can? What happen if we send a 100% RED wich has been map from P3 TO REC2020, so not actually 100% in rec2020?