Originally Posted by Dreamliner
You are the only person I have heard having Gamma D issues on the 820. In fact, that was one of the reasons I bought one and I sold my HD Fury shortly afterward. I wonder why this is happening, it would be quite ironic if it was indeed an HDMI cable issue....
Originally Posted by claw
Yes, Netflix in HDR output mode works with the Optimizer...If you set the HDR Display Type in the UB820 to Projector (500 nits), the Optimizer will tone map and modify MaxDML and MaxCLL to 500....The same results are obtained from Amazon....
Originally Posted by Dominic Chan
I don't know about the UB820, but with the ATV4K playing HDR (labelled as Dolby Vision) on Netflix that is a known issue.
Guys: Thanks so much for all your help. I have figured out the switching back to Gamma D problem with Netflix. It actually wasn't happening spontaneously. It happens if I change an Otimizer setting or toggle it on or off. If I leave the optimizer set to a fixed position, the JVC leaves the gamma, once I switch out of Gamma D.
I still have some things about which I'm confused though:
1.When playing a UHD disc with the 820 set to SDR/2020, I see a "Dynamic Range Conversion" banner; the JVC is only showing 8bit color, and when pressing the HDR Settings button, I don't have full access to all the HDR settings. I can't choose display type, or the environment settings: "Standard, Bright", etc. I can turn the Optimizer on or off through Options menu, or by holding the HDR Settings button, but I lose the full array of HDR options. Is this correct, or do I have something set wrong?
2.When streaming HDR (the 820 set to HDR/2020), the JVC input info is showing Deep Color greyed out with no bit info at all. Is this correct?
3.With a UHD disc or Netflix HDR, in every scene I have watched on the JVC, toggling the optimizer makes only the subtlest of differences. Is this normal?
4. and finally, the settings below the Optimzer: I'm assuming luminance, color, bandwidth and NR should be left at default, but what about the "Dynamic Range Adjustment"? With the JVC should that be left at default, or are there good reasons to adjust?
Thanks you so much,