Oftentimes a simulation will involve "overpowering the sun". You're not doing the lighting in the dark, you're adding light to an existing scene to simulate the

Oftentimes a simulation will involve "overpowering the sun". You're not doing the lighting in the dark, you're adding light to an existing scene to simulate the sun being where you want it to be. Day for night shooting is a similar idea - by changing color balance and adding more light to emulate the moon - it's possible to give the impression of darkness.