A specialist in the history of photography, Geoffrey Batchen is Professor of History of Art at University of Oxford. He began his career as a curator, but he also edited art magazines, hosted a radio show, and published a variety of books, most recently Inventing Photography: William Henry Fox Talbot in the Bodleian Library. His writing has been published in twenty-three languages to date and his curated exhibitions shown in Brazil, Australia, United States, Netherlands, UK, Iceland, Japan, Germany and New Zealand. He has a particular interest in the early history of photography but often brings this into conversation with the present, and especially with contemporary art practices.

Toby Kamps is former director of Blaffer Museum of Art, and curator of modern and contemporary art at the Menil Collection. He is now the director of external projects at White Cube Gallery and is an Editor-at-Large for the Brooklyn Rail.