Diarmuid Costello is Associate Professor of Philosophy, University of Warwick. He co-edited (with Dominic Willsdon) The Life and Death of Images: Ethics and Aesthetics (2008), and (with Jonathan Vickery) Art: Key Contemporary Thinkers (2007). His articles have appeared in British Journal of Aesthetics, Journal of Aesthetics and Art Criticism, Critical Inquiry, Rivista di Estetica, and Angelaki.  

Margaret Iversen is Professor of Art History and Theory, University of Essex. Her books include Beyond Pleasure: Freud, Lacan, Barthes (2007); Alois Riegl: Art History and Theory (1993); Mary Kelly, co-authored with Douglas Crimp and Homi Bhabha (1997). Writing Art History, co-authored with Stephen Melville, is forthcoming.

Iversen and Costello are also Co-Directors of the AHRC research project "Aesthetics after Photography."