I don't think pre-update there were different nights, every night was the same and at some point during the night it was pitch black for a short amount of time. And yes, during that time, gamma adj made no difference.
My point is that if they can't figure out a technical way to make it so you can't use gamma adj to see better, then don't make nights very dark at all, just make it dim to where people who don't adjust their gamma see well enough that those who do don't have a huge advantage. I think it'd be hard to do this and still maintain a pitch black part of the night, because as you enter and leave that part of the night, the level of darkness will be advantageous to those who adjust gamma.
Or just give everyone automatic night vision (a la Riddick) based on some radiation exposure effect. :P
If it was not different night cycles then it was just the time of night I guess. Sometimes adjustting your gamma would work and sometimes it would not depending on how dark it was. I have a program that will adjust it to any level you want. And in the darkest part of the night it did nothing to help you see. It just make the black turn pure white, still adding no visability. It is very annoying getting shot in the dark by people who can see clearly. Thus pitch black all the time is the only way to make flashlights have a use.
If they keep pitch black nights there is nothing anyone can do with their gamma to make it brighter rust me. The only time you can adjust your gamma is when there is some light in the game.
Everyone I fight now can see perfectly in the dark like they have night vision goggles. All this patch did was make nights, flashlights, and torches, completely useless.
Bring back the pitch black.