Yoshihiko Ueda is one of Japan's most prominent commercial photographers, yet he has also published a number of well-regarded books of his personal work. "M.River" takes the viewer on an abstract journey into the wildnerness. The nominal subject of this book is, of course, a river, but the river itself is only a medium through which Ueda conducts an experiment in seeing. This experiment consists in showing a series of blurred images of the river, followed by a series of clear images, and ending with another set of blurred ones. These blurred images hold the gaze surprisingly well, and the core of "M.River" lies in the experience of looking at these photographs. In other words, the object of Ueda's experiment is to let the viewer consider the way that they are looking―perhaps not just at these photographs in particular, but at the world in general. "M.River" requires careful, concentrated viewing, and the book's clean design and layout facilitate this meditative gaze.