Mark Durden is a writer, artist and lecturer.

He has written extensively on photography and contemporary art. Publications include Dorothea Lange (2001, 2012), Fifty Key Writers on Photography (2012), with David Campbell, Variable Capital (2007) and with Ken Grant, Double Take: Portraits from the Keith Medley Archive (2013).

He is part of the artists group Common Culture and currently Professor of Photography at the University of South Wales, UK.

Guido Costa is a worldwide curator and writer on art and photography, and former collaborator with Nan Goldin on the book, Ten Years After (1996)