OPTIONAL: Will remove the dirty lens /lens flare effect. Play game and decide for yourself before install. You will know what I mean since its as soon as you gain character control.
ctrl + ~ to bring down the console
Tweak the 2. Less is less... more is more
OPTIONAL: Can turn it off in settings [I did]
Optional: Also in settings.
Keep in mind game is beautiful.... and you pay the cost. Its a bit ahead of its time. If its choppy dont be surprised you got to reduce settings namely the FSAA. Can always add in an injector. If using the lens effect remover got to use a custom dx9settings.ini -> see HERE