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Green screen Footage - Professional Footage 4 Film and VFX Artists. Blue or green screen - another visual effects business question
But what is it all about? A blue screen or green screen in the background of the performers allows filling in the blue or green area with other pictures or sequences, later. In short, to change the background partially or completely. The colour ultramarine was already used in black and white shots. The actors on set stand in front of a ultramarine background, usually made of stretched fabric or actually a painted wall. There was a yellow filter in front of the camera lens. Since yellow and ultramarine are complementary colours, they cancel each other out. That means, wherever there is ultramarine, the film material is not exposed. As a result, the optical printer. The optical printer, one of several projectors and a camera, which could be used to put the sequences together using semi-transparent mirrors, exposed the material that had not yet been exposed to other motifs. In order not to expose the previously exposed material (in our case, the actors) again, the negative of the performers is placed in the background so that they remain free when the background is “punched”. In the 80s, because of the colour sampling for the digital image, the decision was made to use green. Green has the highest in film sensitivity. Because gaudy green and gaudy ultramarine are not to be found in the skin color, and therefore a greater contrast is achieved, which simplifies the punching of other film material. Green screen is used mostly when the background is bright. The blue screen is used for dark backgrounds. This simplifies the keying,(chroma key) i.e. the “separation” of the actors in front of the coloured area. On our green screen Website you will find many high end quality, royalty free clips, shots and animation for download. We also have some free green screen stock videos. Each shot and clip is either in 4K-UHD or 4K resolution.
Matte Painting by Joachim Simon for the Film "The Squonk" - ©Bittersuesss Pictures 2015