I think that I'm a pretty great producer, but the vision behind Batman is Chris Nolan. I'm there to do my best to help execute that vision, and I think I do a really good job, but the vision is Chris Nolan.

I think that Superman is the pinnacle of the DC Universe. Our feeling always was that you need to get Superman right. That was also our goal. We didn't want to ignore that this universe exists.

For a long time, the film business was a single-digit business on investment return. Now, because of home video, it's a low double-digit business, and the studios want to make sure it doesn't go back into the single-digit business.

We live in a much more complicated time than when Superman was created 75 years ago. Or even when Superman The Movie was created in the 70s. There are great advances but with those come a great many complications.We felt that the character needed to grow up in that kind of environment and had to face those kinds of colossal choices that were not going to be easy. It's difficult to figure out the right path. And even if you do good there are causalities to your choices. We thought it would be compelling.

The story of Kal-El is actually a great story about adoption. He is an alien who has embraced his human side. As much as he loves and honours his heritage, and he needed to know where he came from and discover who he was, he has to decide who he is going to be.

At least you used to know 'there's the villain, there's the good guy', but today there are more shades of grey.

I came from advertising. For me it's about protecting the director's vision. That's always the goal. There's keeping things on budget and on time and dealing with selling the movie so that to me is a focus. But also it's about serving the script. We are genre filmmakers, those are the films we love to make, so my perspective is a little different.