…as in green screen.
I helped on a shot the other week and we used the studio at South Dakota State University because they have a great chroma wall. Check it out.
We had the camera on a slider so the people in the image would rotate and the background behind them will change to show pictures of what they are taking about. Setting something like this up takes a lot of time, especially with the lighting and shadows. A different studio could have been used but making the drive an hour north was just easier.
This is the first time I have been in this particular studio and have to say they did a really nice job with it. The curve at the bottom of the wall really gives it that feeling of infinity. Fun stuff.