Since this week we're all planning to shoot on a green screen I thought I would look up things about its history. I found this cool video that briefly goes through the developments in special effects technology. It's a pretty interesting history. For example, the very first compositing was done with double exposure techniques back in the 30s.
Another cool piece of information in the video was why the industry switched from using a blue screen to green. It accompanied the switch from film to video. The clip says that blue screens work better with film and green with video. One reason is because in video cameras, there's more information in the green channel than the blue.
For any Star Wars fans, there's a section starting at 3:06 on special effects in the movies. In particular, The Empire Strikes Back used new techniques that made the final film look much more realistic.
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