What is a green screen? A green screen is a special effect and post-production technique that is for composing two images and videos streams together that is based on the chroma range(color hues)
The first ever type of use of a green screen was in 1898 in a film called for Heads Are Better Than One by Georges Melies, but back then the green screen had not been developed and Matting was used instead, this was known as travelling matte.
Then back in 1930 the bluescreen was developed and in 1940 the bluescreen was used in the Thief Of Bagdad to create a genie escaping from a bottle.Then in 1964 Petro Vlahos won a award for his use with motion control cameras alleviated for both foreground and background which could be filmed with the same camera. In 1980 the minicomputer was used in the controlling of the optical printer for The Empire Strikes Back.
A use of green screen was in the Avengers Assemble movie where a green screen was used in the background to show New York during the massive battle in the city, the green screen was really convincing, to be honest at first I didn't know it was a green screen and though it was a prop background.
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