Light and Photomedia proposes that, regardless of technological change, the history and future of photomedia is essentially connected to light. It is a fundamental property of photomedia, binding with space and time to form and inform new, explicitly light-based structures and experiences. Jai McKenzie identifies light-space-time structures throughout the history of photomedia, from the early image machines through analogue and digital image machines to the present day. She proposes that they will continue to develop in the future and takes us to future image machines of the year 2039. With the use of the theories of Paul Virilio, Jean Baudrillard and Vilem Flusser, featuring artists including Henri Cartier-Bresson, Nam June Paik, Yves Klein, Eadweard Muybridge, Martha Rosler, Cindy Sherman and Michael Snow, as well as their photographic images, Light and Photomedia places the reader in a new history and future which, although mostly overlooked by the canon of photomedia theory, is an essential line of enquiry for contemporary thinking and dialogue in photography.