Editing - sequence, continuity editing, SFX (special effects), ellipsis, fade in, fade out
Continuity editing (also called Classical editing)
This form of editing is now considered "virtually universal" in commercial film and television, although it was initally associated with Hollywood cinema. Typically, the aim of continuity editing is so that the editing seems "invisible", so it remains unnoticed by the viewer, which means they would not get distracted by awkward jumps between shots or confused by the spatial layout, thus allowing the audience to focus on the plot instead. Classical editing is "smooth" and "seamless", both because of it's conventionality but also because it "employs a number of powerful techniques designed to maximise a sense of spatial and temporal continuity".
180 Degree Rule: This is a key element of continuity editing. This states that the camera must stay on only one side of the actions and objects in the scene. An invisible line, known as the "180 degree line" or "axis of action" runs through the space of the scene. The camera can shoot from any position on one side of the line, but must never cross it. If the camera did, even briefly, cross this line, the audience would find it jarring or confusing. However, with the 180 degree rule, the audience rarely experiences even a "momentary sense of spatial disorientation".
Match on Action: This is embedding cuts in the middle of action. The technique helps "hide" the cut, as the viewer is paying more attention to the action than the edit.
30 Degree Rule: This holds that the camera must move at least 30 degrees between shots. In other words, it is considered "taboo" to show one shot and then cut to another shot that is almost identical to the first.
Jump Cut: This creates the impression that the object of the shot is jumping in a stacatto burst from one position to another. Editors use this to draw attention to the editing, although they avoid it for precisely the same reason.
Eyeline Match: This preserves spacial continuity, and makes cuts less noticeable. In an eyeline match, the viewer is encouraged to see the shot typically from one of the characters Point of View. This keeps the spatial relationships among characters and objects consistent from one shot to another. It makes the editing cut slightly smoother, as the viewer will expect the shot, and often anticipate what it will show.
Crosscutting and Parallel editing:
Crosscutting: A pattern of editing that alternates shots of two or more lines of action simultaneously in different places. (A classic example would be shots of a burning house alternating with shots of fire engines racing towards the scene)
Parallel Editing: This involves the same pattern of alternation, but does not necessarily imply temporal simultaneity. (An example would be shots contrasting scenes of a war, and of a peaceful situation)
Ellipsis/Elliptical Editing: This refers to the "abbreviation of time" which results in parts of the story/action/event being cut out, and therefore lost to the viewer. This is effective for building suspense.
Shot Transitions:
Cut: An instantaneous transition from one shot to another.
Fade: In a fade-in, the image gradually brightens into view from black, white, or any other solid colour. A fade-out is when the image gradually disappears from a view.
Dissolve: A gradual transition in which a fade in is superimposed over a fade out. This device is used as a "softer" transition, but the overlap of two images also allows the director to make associations and convey rhetorical narration.
Wipe: A shot transition in which one image gradually replaces another through horiziontal, vertical, diagonal, spiral or other movement across the screen.