NLC tags 1-1-1 vs 1-2-1 and PrPro's actions and practices @Francis-Crossman17221443 @mattchristensen
NLC tags are rather crucial to working in video post professionally. They can be incredibly confusing. And there is no published information on what PrPro's NLC practices are concerning both reading and publishing tags (to file headers on export).
I know the app is hard-coded to assume Rec.709 b-cast standards for monitors: sRGB primaries, D65 white point, gamma 2.4, and 100 nits monitor brightness in a semi-darkened room. The "display color management" preferences option makes PrPro look at the monitor's ICC profile and attempt to remap the image to show as correct Rec.709 on that monitor's color management system.
I work with some of the top colorists in the world daily. They work out of Resolve, Baselight, and Avid mainly, and have gear including $10,000 spectroradiometers to use for calibrating their spendy monitors. They deal in NLC tags every day. And need to know, professionally, exactly what PrPro does w