I've played my far bit of TDM missions with gamma on 1 and brightness on 1 and I finally noticed how easy it would actually be able to see the player sneaking around in the dark if there was another player walking around as a guardr. So I finally decided to give the gamma and brightness guide in the training mission a fair amount of effort to get the "best" settings for an immersive experience.
After a couple minutes of re-reading the guide and fiddling around with the sliders I was never satisfied. When I was sitting in the corner to the right of the book I kept the darkest corners of the room and the torch in my FOV. When I got the dark corners dark enough to the point where I could barely make out the individual bricks (e.g. "realistic"/immersive), so that if I was a guard looking in that corner I wouldn't see shit if the player was sitting there if I'm just strolling by like most guards in the game, but the torch was incredibly dark or the colors were messed up.
So I was thinking, what if there was 2 sliders, one that basically made the "darks" darker and the "lights" lighter individually. I think that contrast basically does what I just said, but if you want to have near black corners e.g. "realistic" to the point where if a real person was walking by that hallway they wouldn't see you, the flaming torch is now going to give off just as much light as a zippo.
Anywho I don't even know if its possible to have a slider that just adjusts the dark areas of the game and another for the light. If anyone knows what I'm missing when trying to get the brightness right some help would be greatly appreciated.