They all do the same thing—take a three-dimensional scene, remove one dimension and arrest all movement. Whether you use a Hasselblad ($40,000) or an iPhone (a whole lot less), the photographer's responsibility is to see the world as it is, to recognize that by arresting movement and removing a dimension. he has the capacity to remake what he sees in a new way, one that the rest of might not see. When Picasso took a bicycle seat and handlebars and reassembled them he found a bull's head. Discovering how the camera transforms light and movement, the things that are known and visible, into something new and exciting is endlessly pleasing. That's why I always carry a camera. And it's more likely to be an iPhone, not a Hasselblad.