Why some people really can't see at night?

[Henyo10 23]

If I change my brightness and gamma to the max, I can see pretty decently. However my friend, who's in the same server as me as well as turning his brightness and gamma up, is still seeing pitch black.

[Copgun 2]

A common diagnosis known as being over dramatic. Or because most monitors are different.

There's also the HDR setting, tell him to max that it should help him see better.

[TheSexyGoat 5]

It's the mod's settings I guess, that's the way it is.

[Ulven 0]

As Copgun said changing the HDR to full increases your night vision drastically.

On my system it goes from completely pitch black where I can only see the stars and nothing else to seeing pretty decently.