180 degree rule

The 180 degree rule is a cinematography guideline that states that two characters in a scene maintain the same left to right relationship to one another and if the camera crosses over the invisible axis of the two characters its called crossing the line and the shot becomes a reverse angle shot. It is arguably one of the most essential rules in filming and this is because if the rule is not followed it disorientates the audience


In the diagram shown, if the camera crosses over into the red zone, it reverses the view of the two people; which means that it looks like the actors have switched sides compared to the green zone and this can confuse the audience.

Here is a video explaining the 180 degree rule in depth and shows examples of it and how it works…


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