[Official 2006 Game Design] Game Elements and Subtasks

[Al Skierkiewicz]

Originally Posted by sanddrag

For film productions, Then on the camera is a ring of maybe 50 super bright green LEDs around the lense. The subject (actor) must be placed between the LEDs and the screen, otherwise it doesn't work.

However, I'm not really sure how well this works over distance. I've only tried this operation from maybe 10 feet away.

Film productions is the secret wording here. This does not work in video, sorry. For green screen effects in video, the screen is lit with "flat" lighting so there are no variations in the background. There can be no green in the foreground subject without those objects being replaced by the "key" video.