why green background

[uaecasher]

hello,

I was wondering why most people use green background when they want to edit the background?

thank you

[craigsharp]

I suggest you read this wikipedia article...

http://en.wikipedia.org/wiki/Bluescreen#Background

[KeithPratt]

There aren't too many things that are naturally that bright green colour and could thus complicate isolating only the background. And for video cameras, twice as much green information as red or blue is recorded, meaning definition is better in an object that's very green.