Boy, am I glad there wasn't a fourth episode of Lord of the Rings.

You had to make a camera look like it's traveling at 300 mph, but you couldn't make it actually travel at 300 mph so you had to slow everything down and build devices to do that. So you were constantly engineering.

I think that era of mechanically figuring out of how to bring a particular evocative image to the screen was a really important part of my education.

I like engineering, but I love the creative input.

It's very much like filmmaking always is-you're always asked to do something that you're not sure you know how to do. So you make an educated guess as to what you think will work and you hope between that and plan B, that you can end up with a product that's really good.

With the advent of digital imaging I made the transition from trying to figure out how to do things to creating objects, characters and the whole cloth. It kind of freed up the analytical part of my brain and I had the opportunity to use more of the creative side of my brain for how things interact with light and integrate into stories.

Once the image was in the digital environment, one of the problems was, we had no means to reproduce the color spectrum, grey scale, and contrast that film produces, without converting the digital file to film, evaluating it, then going back and changing the digital image.