Dictates that when cutting between shots (especially of a single subject), the difference in angle between the two shots should be equal or greater than 30º in order for the cut to be effective. A cut that combines shots that are too similar will be upsetting to the viewer. If cutting to a particular shot violates this rule, continuity may be improved through the use of a cutaway to a reaction shot or a close-up of something else and then cutting to the second shot, however, this is not considered strict continuity editing. See also 180º Rule.