Originally Posted by Iamjcl
So the JVC macros have been a godsend and seem to work great.
Looking at all the custom curves for 4K nit, 2K nit, 1k nit, and HLG etc... and the macro capabilities, it seems that the JVC PJ (or at least my RS500) is the limiting factor as it can only hold 3 custom gamma curves at a time.
Am I missing anything (or maybe the newer PJs have more custom gamma slots?) or can the PJ only hold 3 gamma curves and you have to manually import as needed?
You do need to make a choice between HDR and other formats.
If you don't care about HLG (many don't as there is little to no content yet in most countries), then you can have granularity and use up to three custom gamma slots for HDR10, i.e. 1100nits, 2200nits and 4000nits.
But you can also use just one or two, that works fine. For example, I use automatic mode with 2 slots for HDR10 (1100 and 4000nits) and one slot for HLG BT2020.
You could just as well use a single universal curve, provided it is well-designed, clipping at 4000nits or 2200nits or even 3000nits for HDR10, depending on how much brightness you can squeeze out of your set-up, and have one curve for HLG BT2020 and one for something else.
The three curves for HDR10 is a luxury, it's really not needed.
Although it would be nice to have more custom gamma slots (no, newer models don't have more), the real limitation is your calibration abilities.
I could very happily survive with a single well-designed 4000nits curve, or even hard clip a bit lower than that if I needed the slots for something else.
I only keep the HLG slot for testing, I have zero content I want to watch in HLG at the moment but I find having it handy more useful than a third HDR10 curve at 2200nits.