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Ridley Scott is shooting his first film in 3D, and he says he'll always use the multidimensional approach in his future films.
The director appeared at Comic-Con via satellite from Iceland, where he is shooting the sci-fi thriller Prometheus.
Scott said 3D doesn't just enhance action sequences, it "opens up the universe of even a small dialogue thing".
The filmmaker said: "I'll never work without 3D again."
Prometheus star Charlize Theron appeared on stage at Comic-Con and co-star Noomi Rapace appeared alongside Scott in Iceland.
The film explores questions of alien DNA and is set for release next year.
