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Green screen footage wiki
Another challenge for bluescreen or even greenscreen is proper cameras exposure. Underexposing or overexposing a colored backdrop can bring about poor saturation levels. In the case of video and digital movie house cameras, underexposed images can contain high levels of noise, as well. The background must be bright enough to allow for the camera to produce a bright and saturated graphic.
A newer technique is ty trying a retroreflective curtain in your background, along with a wedding band of bright LEDs round the camera lens. This requires no light to shine about the background other than the actual LEDs, which use an extremely bit of power and space unlike big stage lights, and also require no rigging. This advance was authorized by the invention about practical blue LEDs with the 1990s, which also support emerald green LEDs.