For a filmmaker, it's a rare chance to do a personal film on a big canvas.

I think for most people, the audience probably couldn't tell the difference, but I know they [shots of visual effects] can be better. And the people working know they can be more precise. I'm still doing another round of sound mixing and color timing, pretty technical stuff. I think the movie [Life of Pi] is really presentable, nothing was left out that would take you out of the movie. I just need to perfect the job and I still have two weeks to go [to deliver final cut to Fox].

I basically made the movie from the crew's suggestions. For one scene, I wanted some kids' toys against the wall in Mikey's room, to give the scene texture, and we tried a field hockey stick. It looked really good to me, until someone had to say that in America, field hockey is more of a girl's game. Gradually I got tuned into the world - that happens on every movie.

Summer blockbusters are very expensive to make. They have things that have to be expensive, such as 600 effects shots or CG characters that have to go a certain way, or a film design that is different but expensive.

My first instinct was to cast as close to the short story as possible, but then I realized that I needed actors who could go for it and that they had to function well as a couple in a love story.

Mostly it's like, I get inspired by something and I want to learn that part of filmmaking, I want to delve into that kind of depth. And leading, also, a lot of people. A lot of people, for two years of their life they follow me, and they believe what I believe in. So that's some responsibility and I'd like to make it worth the effort.

Making movies is a way of understanding myself and the world.