How do I decrease the brightness of my screen below the minimum on Windows 8?

Solution 1:

f.lux has a hidden feature which allows you to decrease your screen's brightness below the minimum set by Windows.

You can use alt+pgdn to decrease brightness and alt+pgup to increase brightness.

Note: This is not the same as adjusting screen temperature, which f.lux is also able to do.

Dimming screen with f.lux