After a screening of 'Hugo' at L.A.'s DGA Theater, Martin Scorsese & James Cameron discussed 3D for The Hollywood Reporter, and Mr Scorsese evoked a conversation with Gaspar Noé :
Question: You had alluded to it before, just that the whole nature of the setting—the train station, being inside the walls, the clock towers—things really lent themselves to playing with depth the way you are talking about. Martin Scorsese: But the depth has to tell the story. Two years ago, I had the opportunity to go on a little family vacation, which I never do (laughter) you know, what I mean? And the only place I really wanted to go was Egypt. I was there with a number of Egyptian filmmakers, a Palestinian filmmaker and some others. And I said, ‘Now 3D is going to be the major thing.’ And this filmmaker said, ‘It might be, but it has to be in the script. It has to be in the story.’ I said, ‘You’re right.’ James Cameron: I think there’s a truth to that. MS: And I got scared then. I said, ‘You’re right, I’ve got to think of it in the script.’ Then Gaspar Noé, who does these very tough movies, he said, ‘Are you going to try 3D?’ I said, ‘Yup.’ He said that the thing with 3D is that you should do these long takes—he’d just finished Enter the Void. He said, ‘If I were to do it, I’d take one long take, 20 minutes, characters coming and out, tracking them, then digitally combining it.’ JC: That’s a fun challenge. I don’t think I’m ready for that one yet! MS: Me neither! I said, ‘Well, we’re already thinking this way. You know, but there’s a stigma. The fashion to say, ‘Oh, it’s a gimmick.’ But, you gotta understand when moving images first started, people wanted sound, color, big screen and depth. They did. I mean Lumière Brothers’ films have been restored, and two of them are in 3D. And Méliès was already going there – there’s a two-minute section of his films that are in 3D that have been restored. And everybody wanted color, so everybody tried color right away – JC: Yeah, and the cameras were enormous. They were the size of a Volkswagen.
(source)