Duration
See also: Long takeThe length of shots is an important consideration that can greatly affect a film. The purpose of editing any given scene is to create a representation of the way the scene might be perceived by the "story teller." Shots with a longer duration can make a scene seem more relaxed and slower paced whereas shots with a shorter duration can make a scene seem urgent and faster paced.
The average shot length (ASL) of a film is one of its cinemetrical measures. For example, The Mist has a length of 117 minutes and consists of 1292 shots, so the ASL is 5.4 seconds, while Russian Ark is a single 96-minute long take, so an ASL of 96 minutes or about 5,760 seconds, a factor of 1,000 difference.
Shots with extremely long durations are difficult to do because any error in the shot would force the filmmaker to restart from scratch, and are thus only occasionally used. Films famous for their long cuts include Francis Ford Coppola's The Godfather in which the entire first scene is a long take featuring Bonasera describing the assault of his daughter, and Alfred Hitchcock's Rope, which only cuts at the end of each reel, and does so surreptitiously so that it seems as if the whole film is one take. Orson Welles's Touch of Evil opens with a long tracking crane shot. A film that was actually a single take is the recent Russian Ark. Other prominent examples known for their extremely long takes include Stanley Kubrick's 2001: A Space Odyssey and the works of Andrei Tarkovsky starting with Solaris. Béla Tarr is also known for using long takes in his films. Joss Whedon's feature film Serenity introduces the main characters with a long take.
Read more about this topic: Shot (filmmaking)
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