In 'The Way Back' survivors were all ordinary people, and that's the whole point, that's who I felt these people should be, and they shouldn't be that hero that stands out.

I became obsessed with the true stuff, and that led to shaping 'The Way Back' screenplay somewhat toward a minimalist style, to avoid free-hanging moments, and to hold the music back, so it would never lead you to an emotion, and to try to make the emotions as real as I could.

Sixty-five days principle photography, five-day weeks, which is the only way I'll work. With my cinematographer Russell Boyd, we take as much time as possible before pre-production, looking at stills. The next most important thing: he will come to me and talk about lenses. And I'll see his plan, which is generally great, and I might talk about how the light will be, handheld or not? I talk very freely, and try not to talk specifically, just talk around it, because it can unlock all sorts of things.

In 'The Way Back' survivors were all ordinary people, and that's the whole point, that's who I felt these people should be, and they shouldn't be that hero that stands out.

Various studios are still shooting on film with digital grain and the DI negatives, it's not ideal. We should really be all film or all digital. But that being said, the old way of graining in the camera, now you can make changes like a painter. It's dangerous because you can ruin the film, you can over-fiddle. We've all seen films and gone 'what the hell is that?'

Ed Harris seemed to be as a man, it seems, like a Clint Eastwood, this country is one that has produced more than one of this kind of man that's iconic and enormously appealing to the world, as part of American film culture.

I'm not from a theatre background, I'm wary of rehearsals. But what I do like is hanging out together, on location.