In another area of the stage, there is the mighty "green screen". The actors do their magic, then the editors do theirs, making the back drop anywhere and anything.
It does not have to be green. The technique can be done using any color, even colors which are outside of the spectrum of human vision (as long as you develop a camera that can pick it up). Green is used often because it's easiest for most modern cameras to pick up, giving the editor the cleanest possible image. It's also a less common clothing color, meaning it's less likely to cause any embarrassing disappearing outfits. Blue was once common, but it's common in wardrobes and is a common eye color. Still, you can avoid this, and it's a good color to try because it shouldn't interfere with skin color. White is a bad color because it's common in wardrobes and eyes. Same for black, only add to that hair. Both of these play a strong role in lighting and shadowing. Avoid these. Red is a bad color because it's seen in your lips and mouth and your skin tone. To select a good color, pick one that's not going to be found on anything else in the scene. Almost neon colors work well because they're bright and strong. For materials, anything matte and flat is good. Shine, reflections, and heavy texture is bad. How does it work? With digital processing, it gives the editor a solid background that's easily removed by software. Speaking of which, most consumer video software with chromakey capability (Adobe Premiere for example) will allow you an option to select any color to be removed |