Continuity Editing: 180 degree rule, match on action, eyeline match

Continuity editing is when you edit shots so it is smooth and you cannot tell it has been edited. It is also known as invisible editing. It combines 180 degree rule, rule of thirds, “match on action” cuts, “eye line” matches, 30 degree rule, shot reverse shot and graphic match to create a smooth flow.
The 180 degree rule means the camera must always be on one side of the action, the camera can move within that side but cannot swap unless the audience see the camera move past the line. If the camera swaps sides it can confuse the audience because the characters will be on the opposite side of the shot.

“Match on action” means that gestures/movements should match between two shots. “Match on action” means that the action moves smoothly, if the action does not match then the audience will notice the editing.

“Eye line” match means that the direction of the eye line must be aimed at the object. This shows the audience where they should be looking and where the drama is. For example, if a man is looking off-screen towards the left at a television then the next cut should be the television.

http://www.youtube.com/watch?v=BBPw9C57TuU