T.J. Demos is Lecturer in the Department of History of Art, University College London. A member of Art Journal's editorial board, he writes widely on modern and contemporary art, and his articles have appeared in journals such as Artforum, Flash Art, Grey Room and October. Recent essays include "The Art of Darkness: On Steve McQueen", which appeared in October magazine, and "Zurich Dada: The Aesthetics of Exile," which was included in the catalogue The Dada Seminars that accompanied the international Dada exhibition organized jointly by the National Gallery of Art, Washington, and the Centre Pompidou, Paris, in collaboration with the Museum of Modern Art, New York. He reviewed the Istanbul Biennial for Artforum in November 2005. His book, entitled The Exiles of Marcel Duchamp, is forthcoming from MIT Press. He is currently working on a new book on contemporary art and globalization.

"Vitamin Ph" provides a third dose of visual stimulation and vital information, following on from the successes of Vitamin P and Vitamin D. Similar in concept, scope and structure, "Vitamin Ph" presents, in A to Z order, the work of 121 international artists. This up-to-the-minute survey focuses on global developments in art photography and the use of the medium by contemporary artists. 78 nominators worldwide have identified living artists who have made a fresh and innovative contribution to recent international photography. These selections will be accompanied by a 5000 word introductory text by TJ Demos, aiming to explore ideas relevant to contemporary photography with reference to the works included in the book. In addition, the work of each photographer/artist is introduced by a short commissioned text of approximately 500 words. All works reproduced in the book use photography as their primary medium or source material, whether or not they then develop into or merge with other media. Extending beyond the parameters of straight photography to encompass sculptural, painterly and filmic elements, "Vitamin Ph" explores the medium in an expanded sense. The artists represented have emerged, or re-emerged, in the last five years to create a distinctive body of new work. "Vitamin Ph" aims to contribute to international debates on contemporary photography whilst providing an accessible overview and concise reference book.