Vision at night

how so many ppl see me at night and easy kill me with guns/bow it is full dark and i dont see anything and gamma wont help me…is it some cheat or programm or what?

Some time it depends by position, if you are over a ridge I can see you silhouetted in the sky.

no…

I discovered interesting thing… you can see in dark far away… but you cant see at short distance… Its totaly stupid.