For almost thirty years the artist has been building new pictorial worlds of abstract photography with his Silver works, which sound out and expand the boundaries of what photographic processes can represent. Brought together for the first time in a single volume, he describes the pictures as stained, impure, bright, unstable, exhausted, fugitive, smeared, shimmering, as solid colours; alongside them he shows the Silver works in exhibition settings, as elements of installations or as pure Silver installations. An accompanying essay discusses the philosophical, aesthetic and material questions they raise.