He has become a mega-star now, but Joseph Gordon-Levitt still is excited about working within new universe.

'Sin City 2' Director Talks Making The Movie 'Bigger' Than The First

The Don Jon actor talked with Movie Fone on Wednesday about working on the new Sin City and what it is like working on a movie that is very different from what he is used to.

"The actors were there. But that's just what's there -- the camera and the actors. And that's a beautiful thing because, to be honest, on a traditional movie set there's a lot of technical stuff that has to happen that you have to wait for, as an actor," Gordon-Levitt said.

'Sin City 2' Star Responds To Poster Controversy, Behind-The-Scene Footage Revealed

"That can kill your momentum, it can distract you, or you can break focus. But when you're doing a movie like this -- the production design and the location and all of that -- it happens later. So the focus is on camera and performance. And in a way it's really ideal for an actor."

As for the Sin City comics, Gordon-Levitt talked about being a huge fan and being happy to participate in the movies.

"Those comics were my kind of comics. I love the stark, graphic black-and-white aesthetic. I'm no good at drawing but I remember when I was young, just having fun sketching stuff," Gordon-Levitt said.

"But what's really fun, I don't know if you've ever tried it and Frank Miller is the master of it, but you cover a page with India ink and scratch out the white from the black. So you're not drawing in black lines, you're drawing in white lines. And it's so much fun."

Gordon-Levitt also dished on two future projects, Sandman and The Walk, one of which is in development and the other he just finished shooting.

"We're working towards (Sandman)," Gordon-Levitt said. "We just finished shooting (The Walk). It's definitely one of the most, if not the most, challenging thing I've ever done. And I mean that in the best way."

Gordon-Levitt plays Johnny in Sin City: A Dame To Kill For, which opens in theaters on Friday.

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