When I stopped working at the Factory, I started thinking about different approaches to photography. I became interested in sequential and conceptually based images.
What I did was photograph facing north walking up the Avenue of the Americas, from 42nd Street to 59th Street, taking one picture at the beginning of the block, so that certain parameters were determined. And yet, there was a lot undetermined. The moment I took the picture was chosen by who walked by.
There was some Conceptual photography being done at the time that tended to treat the photograph as a record of the idea, but not as a piece of real information in itself. And I wanted to produce images that had visual content, that existed as images as well as parts of a conceptual framework. And so, with this work, I chose to use infrared film, which makes things glow in this particular way. And I don't even remember why I chose that; I'm glad I did.