I think it’s a limitation of the panel from LG.It is still incredibly dim, reaching only 478 nits of brightness. That’s odd to me since regular OLED can get that bright. What is Dell doing with that tandem OLED if not exploiting it for similar brightness iPads can attain?
From LG Display’s press release:
it has also been certified as Display HDR (High Dynamic Range) True Black 500 by the Video Electronics Standards Association (VESA).