I’ve been trying to find the title of a science fiction story I read more than fifty years ago when I was around fifteen. It’s about a unique time machine.
This is what I remember. The main character goes overseas (maybe somewhere in eastern Europe) on business. He has some time to kill, and goes into a small theater in a sleazy part of a town to see a period film. He’s amazed at the movie because it’s so real. Later he finds out that the film was shot by a movie camera which is a time machine. It goes back to a period when a historic event happened, and shoots the scenes.