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Chroma Key Backdrops

  Blue chromakey is used because:

  • It is complementary to skin tones
  • If you don't pick up all the "blue" in the background in your editing process, the so called "Blue-spill" doesn't notice so much as green.
  • Blue has been traditionally used for film due to the colour separation processes used, but blue chroma key requires more light

Green chromakey is used because:

  • Video and digital cameras are more sensitive to green with less noise making it easier to generate a cleaner mask.
  • Green requires less light
  • Also Green is used where you have predominantly blue subjects (maybe you shoot in schools where the uniforms cross into the particular shade of blue).

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