Monday, December 10, 2007

The Green Screen

The green screen is a green backdrop that is used to create movies where the backdrop that the movie creators want cannot be achieved by going on location. The scene is filmed in front of the green screen and then computers are used to place a backdrop as scenery of what they wanted in the film. It also helps create sizing effects. Green has become the favored color because digital cameras retain more detail in the green channel and it requires less light than blue. Green not only has a higher luminance value than blue but also in early digital formats the green channel was sampled twice as often as the blue, making it easier to work with. When you need an object or character to be either larger than life or smaller than a peanut, you film on a green screen. It’s crazy what a green screen can do to a movie.

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