Saturday, February 06, 2010
When To Use Digital Key vs. Chroma Key
Rosebrand: "As high-grade recording equipment becomes more affordable and non-linear editing software becomes more robust, even grade-schoolers can now post high quality video content to YouTube on a regular basis. The improvement in the technology and its affordability has also enabled video producers, at every level of expertise, to incorporate special effects into their videos. One of the more popular special effects techniques is called 'keying.' Keying, or compositing, is the combining of visual elements from separate sources into single images, often to create the illusion that all of those elements are parts of the same scene."
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3 comments:
I didn't know that there were so many decisions to make when it came to what I always called green screen. Who knew it could actually be blue. I think that the main difference between Digital and Chroma Key is the subject's proximity to the screen. With the peoples' access to video technology, anyone can start filming and have their video up on youtube. So for the average basement filmmaker, I think that Chroma Key green would be best suited for them, as it doesn't reflect as much light and will be less likely to make part of the actor disappear. However, for big studios shooting the actor at a distance from the background, Digital Key would work just fine and is less likely to match the color of anything the actor is wearing. All in all, this article was very informative and taught me something I didn't know.
While I had known about the difference between blue and green screens used to digital editing and substitution, I did not know that there were different types of both. I guess the idea does make sense since the colors commonly used for the process were just bring and visually hannis enough to probably reflect their unnatural pigments onto anything near them. Part of me always assumed that any area covered in a solid consistent color could be digital altered, and that the neon greens and blues used were simply chosen because people do not normally use those colors for clothing. The article gives the impression that while this may be one of the motivators behind the color choice, it's just one of many. What those other reasons are however, it fails to elaborate on.
you can use any color actually. green and blue are favorites because they aren't colors found in human skin. red, yellow, and even orange screens have been tried before, but often resulted in the actors being blended in as well
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