I agree. (And yes, this is a sidetrack but interesting!)Sure but I thought we were talking about how if we use DTM then it cannot be considered HDR.
Clearly not the case.
This I disagree. Isn't tonemapped "SDR container" signal linear though? I mean you are or should be using a straight gamma in projector so it has to be linear. And for that reason maybe there is a limit with display brightness where "tonemapped hdr in sdr container" cant be used anymore.Even if you told DTM you had 10,000 nits it would still not be linear like you think it might. The specification doesn't dictate that, so putting it inside an SDR container won't do that either..
Thats a different situation. That is coded as a HDR. I was talking about a HDR signal "tonemapped" to a SDR gamma for a 10 000 nits display. Imo it has to be linear. With 100 nits projector it would look super dim, but with a 10 000 nits display it would look right.If you want to see what linear looks like, open an HDR film but put your display into SDR mode, it will be very washed out, the image is just not designed to look like that, what is also still clear is the 0-100nit range of the image is very much still visibly half the signal bandwidth.