I remember when we were at Sundance, we were in Robert Redford's screening room, and I had never seen the film look so beautiful or sound so great. It was really big and really powerful, and I had a sense of accomplishment in finishing a project like this.

At the beginning I didn't even really think about making a movie [Dream of Life]. I was just thinking of documenting somebody.

That was an amazing experience [making Dream of Life]. It's hard to imagine that we were editing every day for a year. And it was pretty extraordinary; it also went by super fast. But every day was an experiment.

Because the filming process was so organic and there was no script, the film [Dream of Life] was literally telling us what it wanted to be in the editing room.

Fashion has also been a great outlet, and I'd like to do more fashion photography in the future. I also photograph a lot of artists.

Sometimes my fashion pictures can look a little bit like documentary style pictures. So having a camera in my hand was normal.

She let me in during her tour, in London. Her band members - especially Lenny Kaye - were shocked at the fact that I was filming Patti [Smith].