His talk covered the transition from film to digital in the professional medium, and his own bucking of that trend. From shooting elections with toy cameras, to lugging a 4x5 to professional events, but always with incredible results. While the work required to make sure everything functioned properly was immense, the photos speak for themselves. There's a wonderful point about 13:30 where he compares two shots from the same location, one digital and one analog, and the difference is astonishing.