found a lighting mod on google, the default settings looked like ass but after an hour of tinkering with the settings i think it looks cool

can anyone answer my question from like 100 posts ago about how to calculate my fov. i want the widescreen fov to be 120, not sure how to calculate it (when i used to play quake i found a calculator for 16:9 but i don't know the formula, help?)

found a lighting mod