Using the 180 degree rule.

Using the 180 degree rule was easier than we expected it to be. We filmed on one side of the actors to ensure that we did not cross the line.
Before we started filming we made sure that none of our shots would involve us crossing the 180 degree line which we had decided to be through the middle of the two characters.

These screen grabs show the side of the line that we filmed on. Both characters stayed in the same positions to avoid confusion.


This diagram shows the positioning of the characters, where the line was, and where abouts in relation to the characters and the line we placed the camera.