The 180 degree rule states that when filming, the camera should not cross an invisible line between characters to avoid disorienting viewers by switching the characters' positions on screen. While some filmmakers break this rule intentionally, it is generally better to follow the rule to maintain the flow and viewer orientation within a film.

1. 180 Degree Rule When filming you shouldn’t cross the line of vision. This is because it will disorient the viewer as the characters position on screen will switch. There are ways of getting around this problem, such as showing the camera movement from one side to the other. Some film makers purposefully break the rule to disorient the viewer. However, for most films, it is better to keep the rule as otherwise will interrupt the flow and orientation of the film.