I had the opportunity to work with Aliens and Predators when Resident Evil 2 was being made and it was for two different studios. It was for Fox and Sony. They don't care about one another. They just want their movies. So it was very difficult to delay one and... So I had to make a very painful decision to kind of step away from directing the second movie and with the third movie it was the same.

3D really altered the way I shot the movie completely, and it was exciting because, after 20 years of filmmaking, I felt like I was making my first movie, all over again.

I was excited about the fourth movie I guess conceptually because, what I felt we should do it, we should try to make it a conceptual jump like Terminator did to T2. It was still the Terminator franchise, but it was something kind of bigger and grander.

I'm very impressed and the next movie I do I'm definitely going to use a lot of drones in it, because they're very light and flexible and fast, and there are things that you can do with them that you can't possibly do with a helicopter for safety reasons.

For me, it's a multitude of things. In the modern world, there's a real genuine fear of loss of individuality and I think the undead speak to that. I also think the idea of the dead coming back to life, and this unstoppable foe that just keeps coming and coming, but rather slowly just chases you, is a real primal fear. It's like a fear of claustrophobia, heights or water.

Every movie is a commitment of a year or a year and a half. Commercials are much faster than that because they're much more contained. You can get in and out really fast, and you do a piece of work the you see the end result very quickly.

What makes a mockery of a lot of these 3D conversions, where they're shot in 2D and converted to 3D. Having laid a real 3D movie, you realize that it's right in the production design. You design sets that enhance the 3D and you design interactive elements, like the rain or smoke. If you're shooting 2D, you don't know about that.