Black Level (Cont.)

Obtaining a good black level from a front screen projection system is even more difficult. Most screens are designed to reflect light back to the viewer, all light including ambient light. There are screens on the market that will attenuate ambient light that is coming in from side angles, but, as with the same thing in a TV set, it comes at a price of picture quality.
Tight control over ambient light is the best way to obtain a good black level from most display devices. Much of the rest of the story about black level is spread out over several other terms. VE T1 C5.