Are ACES primaries a sub-compression of ACES, which one can switch between ?
Would you mind clarifying your questions? There are two sets of primaries, AP0 and AP1, used in ACES2065-1 and ACEScg, for example, respectively.
If there are two primaries, what do those primaries contain; and why call them primaries ?
I answer that particular question from yours here: Monitor for ACES?
Ah, I understand this part better,