With the discovery of photography and the development of moving pictures the relationship between image and beholder has fundamentally changed. In our time, the time-related dimension of image perception is once more heightened in that the sequence of moving pictures is so strongly accelerated by virtue of the very short cuts that it becomes impossible for the viewer to make out the individual elements. Under these conditions he loses every notion of autonomy opposite these images, is passively at their mercy and is manipulated by them to the extent that he does not refuse them. With the aid of more than 200 pictures, elementary phenomena of visual perception are described in this book phenomena that one encounters on a daily basis, but that are truly registered by only very few people. Brief accompanying texts encourage the viewer to give the pictures his deeper attention in order to consciously experience the phenomena. The book gives a comprehensive, clearly structured overview, and the illustrated examples span from two-dimensional form and color phenomena to the formation of spatial perception up to the influence that emotions and logic have upon perception. The book entices one to experiment with the phenomena that are presented.