why film makers use BLUE screen for super imposing images? Why not green or yellow?

Answer 1

there are only three colours that exist and they are red green and blue, film producers use all three of these for superimposing, because all other colours are made of these three then using the purest forms of these colours makes it very hard for the keying to be F!!!!!!!cked up

Answer 2

Both Blue and Green are the two colors that professionals use for super imposing images, but any color can be used. These two colors are used mainly becuase they are not found in normal skin tone.

There is an ongoing debate going all the way back to the day when blue and green screens first started being used as to which is better. Some people use blue over green becuase it tends to be a little easier to light, it doesn't require as many coats of paint to cover up the base or primer coat, and doesn't cause as much color spill as green.

Others use green becuase of the uniqueness of the color. Green screens use such a bright color of green that it's not as likely to be found in everyday objects as blue. However, green screens will reflect green light onto your subject and other objects in your scene, making it harder to get a clean key (removal of background color).

Answer 3

The way I understand it is they use that bright blue (and sometimes neon green) because it's easy to identify that color and replace it with the images you want digitally. It's such a bright color that it is not likely in the actors' costumes or immediate props... does that make sense???? Hope so! Maybe someone else can explain it better than me!

Answer 4

They do sometimes use green. I think they don't use red or yellow because it would be too easy for the software to confuse it with skin tone.

Answer 5

I work in printing & we used to use a blue pencil to mark stuff up because it didn't photograph...could be part of that, or maybe blue gives a sharper edge to cut & fill...

Answer 6

Nope, you pretty much nailed the reason right on the head.