Cameron tips Hobbit to spark revolution. (Elinker News)

 Oscar-winning director James Cameron on Wednesday predicted Peter Jackson's "The Hobbit" would do for high-definition film-making what his own hit "Avatar" did for 3D movies.

Jackson has filmed "The Hobbit" at a groundbreaking 48 frames a second rather than the standard 24, a move that drew mixed critical reactions when a preview was screened in Las Vegas in April.

But Cameron, a surprise guest at the premiere of the first instalment of "The Hobbit" in Wellington on Wednesday, said he faced similar scepticism pioneering modern 3D techniques on "Avatar", now the highest grossing film of all time.

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