If you know anything about how films are made then you have probably heard about the “green screen” before. The technique is also known as chroma key compositing, and it’s generally used to ...

Widely used in the early days of mainframes and minicomputers, as well as in the days of DOS, the character-based green screen gave way to the graphics-based interfaces of Windows and Mac.

But what if you have limited space? [Fred Emmott] had about 30 inches behind his desk to work with, and shares what it took to make a green screen work reliably in a limited space. Even (and ...