What is a photograph? That simple question is far from settled, as this innovative book demonstrates. Photography Theory presents forty of the world's most active art historians and theorists - including Victor Burgin, Joel Snyder, Rosalind Krauss, Alan Trachtenberg, Geoffrey Batchen, Carol Squiers, Margaret Iversen, Abigail Solomon-Godeau-in animated debate on the nature of photography. This provocative second volume in the new Routledge series "The Art Seminar" presents not one but many answers to the question what makes a photograph a photograph?