Ulrich Keller's research interests have ranged from Baroque art to contemporary photography. He is most interested in the relationships images have with history and ideology. His numerous awards include a Guggenheim and a Senior Mellon Fellowship. His publications include books on Equestrian monuments, August Sander, the Crimean War, and the Warsaw Ghetto, and articles on Rembrandt, Felix Nadar, Art Photography around 1900 and Walker Evans.