The British technology behind Gravity's Oscar-winning visual effects

Gravity has been widely recognised for its stunning visual effects and game-changing use of 3D.
Gravity has also been widely recognised for its pioneering use of 3D.
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I found it very interesting that this form of technology has not been used since Avatar.
One or two films have been made in this way before, such as James Cameron's Avatar, for example. However, Avatar had the advantage of being set in a fantasy world, whereas Gravity is not fantasy film.
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http://www.telegraph.co.uk/culture/film/oscars/10667457/Gravitys-Oscar-winning-visual-effects.html