Brightness

[Bridge]

The game is quite generous with the amount of light you get from the recommended gamma settings. In real life you would not be able to see anything in a completely isolated area with no external light. Your eyes would adjust but unless you wear an eyepatch on one eye specifically for this purpose it would take quite a while and even if you do you would never be able to see that much in complete darkness. Play the game so you can see well lit areas well and you should be good.