On the other hand, when acting for the camera, the actor must take care not to use grand body language as they would on stage because in a close-up or even medium shot, that would look as though they were attempting to get someone’s attention over a bustling bar on a Saturday night. It would read as comedic to the audience rather than dramatic. It would simply be too much. The key for both is basing your actions on the size of frame you are in. In a traditional theatre, the proscenium is considered the frame. In film, it is literally whatever is seen on camera at the time of shooting. A brilliant actor knowns to perform differently on a small stage or in the round than they would an arena or stadium.
