Join Date: Feb 2018
Location: Central Sierra Nevada
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Perhaps the point is that when the 820 puts out SDR/2020 it is not really SDR. It still has the BT.2020 color space and the HDR bit depth, but has been tone mapped to use a convenient SDR 2.4 gamma function and an appropriate nit level for your display, which may do have the ability to do more or less than 100 nits. Don't get hung up on the label SDR.
SONY VPL-VW385ES, Da-Lite 92" 0.9 HD progressive 16x9 screen, Apple TV 4K, HDFury Integral 2, Oppo UDP 203, Panasonic DP-UB820, Anthem AVM 60, D-Sonic 4000 (800x3, 400x4) for bed layer, 2 Crown XLS 1002 (225x4) for Atmos; Speakers: Polk LSiM 705s, 703 front, 4 702F/X surround, 4 Polk TL3 (Atmos), Dual Velodyne DD15 Subwoofers.