This visually gripping book focuses on a central but relatively unexamined aspect of the work of Salvador Dali: his fascination with optical effects and visual perception. The book examines Dali's use of various pictorial techniques, photography, and holograms to further his exploration of visual perception and the ways that optical illusion affects our sense of reality. Dawn Ades and other authorities in the field discuss such paintings as The Enigma of William Tell, in which Dali experimented with anamorphosis, the perspectival distortion that produces on the canvas elongated forms demanding an oblique viewpoint. They also note his interest in other more conventional forms of perspective and their sources in both Dutch and Italian art. They study his development of the famous double image, the paranoiac-critical method that produced images that could be read in multiple ways, as seen in his Apparition of a Face and Fruit Dish on a Beach or Impressions of Africa. And they reveal his fascination with optical effects and three-dimensional illusions that is apparent in his post-war work: the screen-dot paintings like Sistine Madonna or Portrait of my Dead Brother, in which an i