This may only apply to OpenGL - I dont remember if the same problem happens with D3D. But if your screenies are always darker than what you expect you can try this very simple fix.
The normal screenshot command is 'sshot' which is by default assigned to the F9 key. Part of this command sets the brightness to 1 and then executes another command 'shot' which actually does the screenie.
So by reassigning F9 to 'shot' it will take a screenie with whatever brightness you have now.
3 ways to do this:
1 Edit your F9= bit in user.ini, or
2 Type 'set input F9 shot' (no quotes) in the console, or
3 Type 'preferences' in the console and look through the key bindings section for F9
This may also help people that get some lag when taking screenies (since it doesn't flush the vid buffers)
The normal screenshot command is 'sshot' which is by default assigned to the F9 key. Part of this command sets the brightness to 1 and then executes another command 'shot' which actually does the screenie.
So by reassigning F9 to 'shot' it will take a screenie with whatever brightness you have now.
3 ways to do this:
1 Edit your F9= bit in user.ini, or
2 Type 'set input F9 shot' (no quotes) in the console, or
3 Type 'preferences' in the console and look through the key bindings section for F9
This may also help people that get some lag when taking screenies (since it doesn't flush the vid buffers)