Baseline (Widescreen) Solution & Issues
The Game is VERT- out of the BOX - use HEX-edit to get HOR+
HEX edit FOV -> Go to ..\SteamLibrary\steamapps\common\Dungeon Lords\DLSteamEdition.exe
Look for 66 66 A6 3F in Offset 386470 and change it to CD CC CC 3F (16:10) or A9 99 D9 3F (16:9)
I created some FOV files available on PC Gaming Wiki: Dungeon Lords SE - Widescreen FOV.7z
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
HEX edit FOV -> Go to ..\SteamLibrary\steamapps\common\Dungeon Lords\DLSteamEdition.exe
Look for 66 66 A6 3F in Offset 386470 and change it to 33 33 13 40
Eyefinity / Surround Specific Solution & Issues
HEX edit FOV -> Go to ..\SteamLibrary\steamapps\common\Dungeon Lords\DLSteamEdition.exe
Look for 66 66 A6 3F in Offset 386470 and change it to CD CC 8C 40
I you go higher then FOV 4.4 then the FOG Effect will be gone see Additional Pics.
4k UHD Specific Solution & Issues
Same Solution as in Widescreen.