I had the same problem, 32bit hdr panoramas were dark and flat after export from PTGui. But I found, that after the PTGui update, the new version (beta 15) overrrode my default settings in Menu->Exposure/HDR and turned off "Real HDR" option, which also turned off Tone mapping, that was the reason. Maybe your problem has another reason, but you could at least check it.
Dne čtvrtek 11. února 2021 v 15:39:05 UTC+1 uživatel PTGui Support napsal: