Editing Go motion (section)

==Methods for creating motion blur==

=== Petroleum jelly ===
This crude but reasonably effective technique, known as ''vaselensing'', involves smearing [[petroleum jelly]] ("Vaseline") on a plate of glass in front of the camera lens, then cleaning and reapplying it after each shot—a time-consuming process, but one which creates a blur around the model. The technique was used for the [[endoskeleton]] in ''[[The Terminator]],'' by [[Jim Danforth]] to blur the pterodactyl's wings in [[Hammer Film Productions|Hammer Films']] ''[[When Dinosaurs Ruled the Earth]]'', and by Randal William Cook on the "terror dogs" sequence in ''[[Ghostbusters]]''.

===Bumping the puppet===
Gently bumping or flicking the puppet before taking the frame produces a slight blur; however, care must be taken that the puppet does not move too much, and that props or set pieces are not moved.

===Moving the table===
Moving the table on which the model is standing while the film is being exposed creates a slight, realistic blur. This technique was developed by [[Ladislas Starevich]]: when the characters ran, he moved the set in the opposite direction. This is seen in ''The Little Parade'' when the ballerina is chased by the devil. Starevich also used this technique on his films ''The Eyes of the Dragon'', ''The Magical Clock'' and ''The Mascot''. [[Aardman Animations]] used this for the train chase in ''[[The Wrong Trousers]]'' and again during the lorry chase in ''[[A Close Shave]]''. In both cases the cameras were moved physically during a 1-2 second exposure. The technique was revived for the full-length ''[[Wallace & Gromit: The Curse of the Were-Rabbit]]''.

===Go motion===
The most sophisticated technique was originally developed for the film ''[[The Empire Strikes Back]]'' and used for some shots of the [[tauntaun]]s and was later used on films like ''[[Dragonslayer (1981 film)|Dragonslayer]]'' and is quite different from traditional [[stop motion]]. The model is essentially a [[puppet|rod puppet]]. The rods are attached to motors which are linked to a computer that can record the movements as the model is traditionally animated. When enough movements have been made, the model is reset to its original position, the camera rolls and the model is moved across the table. Because the model is moving during shots, motion blur is created.{{sfn|Smith|1986|pages=91–95}}

A variation of go motion was used in ''[[E.T. the Extra-Terrestrial]]'' to partially animate the children on their bicycles.{{sfn|Smith|1986|page=96}}