21technical issues
SHOOTING GREENSCREEN/BLUESCREEN
Chroma key, known as bluescreen, greenscreen, or process photography, is a method of producing mattes for compositing. The basic principle is the same for all processes and for both film and video: by including an area of a pure color in the scene, that color can then be made transparent, and another image can be substituted for it.
The people or objects you are shooting is called the foreground plate, and what you will eventually put in to replace the green or blue screen is called the background plate. Green and blue are the most common colors used, but in theory, any color can be used. There is one fundamental principle that must be remembered: whatever color you are using to become transparent ...
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