Preliminary exercise: Continuity task involving filming and editing a character opening a door, crossing a room and sitting down in a chair opposite another character, with whom she/he then exchanges a couple of lines of dialogue. This task should demonstrate match on action, shot/reverse shot and the 180-degree rule.
Match on Action -
Match on action occurs when an action that begins in one shot is continued or completed in the next. In an exterior shot Julia Roberts opens the front door to a house. In the next shot the camera, now indoors, photographs her entering the foyer and closing the door.
Shot/Reverse Shot -
Shot reverse shot (or shot/countershot) is a film technique where one character is shown looking at another character (often off-screen), and then the other character is shown looking back at the first character. Since the characters are shown facing in opposite directions, the viewer assumes that they are looking at each other
180-Degree Rule -
The 180° rule is a basic guideline in film making that states that two characters (or other elements) in the same scene should always have the same left/right relationship to each other. If the camera passes over the imaginary axis connecting the two subjects, it is called crossing the line. The new shot, from the opposite side, is known as a reverse angle.