Originally posted by Wildshot
I know from being on both ends of the camera, chroma key is hard!
The lighting has to be just perfect otherwise patches of blue or green or whatever your BG color is will show up. That means you need to have lights to compensate for every move the actors make because every time they move their shadows change the lighting on the background. Then the actors have to be positioned so that the scene makes sense, which is very hard and normally takes a lot of takes, although Lucas probably shot the actors than built the scene around them. Then you have to keep from laughing because yeah, anyone looks ridiculous fighting a screen.
I wonder how Christopher Lee managed the fight with Yoda.
George Lucas: "OK Yoda's in front of you but he's moving really fast and spinning and flipping around the place. Action!"
Christopher Lee: "Err. Say that again."
Anyways the Droidekas seriously unbalanced Episode I. I mean George Lucas said that the stormtroopers were supposed to replace the droids because they were better. Compared to the battle droids that's true. But the droidekas, with their speed, shields and rapid fire guns leave everyone in their dust, Jedi included.