Originally Posted by 5x10
Thanks for the response
I am alittle confused though, as I have heard the LS10500 requires a sd2020 feed in order to utilize its 4K emulator
A hdr signal would not allow this to happen
Also, where are you hearing the 820 tone mapping is lacking with sdr2020
The 820 thread seems to think otherwise
Having put several hundred hours on this projector watching 4K HDR UHD discs, I recommend you send the projector the HDR signal from HDR movies on disc. I have the Oppo 203 which has top of the line tone mapping while converting an HDR disc to SDR. I have tried every setting from Oppo on the tone mapping, and none of them are nearly as awesome as just sending the HDR signal to the projector and using HDR 1.
I have a completely light controlled theater, as you mention you have. I also believe you and I are using the same screen size. My screen has a 1.1 gain, so not too much change with that. My distance from projector lens to screen is around 16 feet. I use a custom LS10500 gamma where the first 5 dots to the left are directly on the line, and the second 5 dots to the right are 1 setting above the line. I use digital cinema and use the calibration data from Projectorreviews.com for this projector in HDR mode.
These settings are FANTASTIC. Again, sending an HDR signal to this projector from a 4K HDR disc using HDR 1 on the projector is BY FAR the best way to experience HDR content with the LS10500.
The difficulty comes in from other places. Namely, the projector can't accept a 4K signal at 60 fps that is also HDR. The data load for this signal is beyond the HDMI board's specifications in the LS. THIS HAS NO BEARING ON SENDING AN HDR SIGNAL TO THE PROJECTOR FROM A 4K UHD HDR DISC FOR 24 FPS MOVIES.
The limited HDR ability becomes an issue if you are trying to stream 4K HDR at 60 FPS. This may effect AppleTV or Netflix or other streaming services. I have, as a test, streamed some 4K HDR digital versions of movies I purchased on disc, and I can tell you that hands down the quality of the disc is radically better. If I care to own a movie, I buy the physical media so that I can maximize the awesomeness of this projector.