I'm sure everybody here has seen these publicity shots of Uhura and McCoy (and I believe there are more).
In the background I can clearly see a scene from "The Cage". My question is: in a time before Photoshop, how did they do that? Did they print a very large picture? Was it retro-projected?





In the background I can clearly see a scene from "The Cage". My question is: in a time before Photoshop, how did they do that? Did they print a very large picture? Was it retro-projected?
