In "A World History of Photography", Naomi Rosenblum states that a view camera is: "A large-format camera in which the lens forms an inverted image on a ground glass screen directly at the plane of the film. The image viewed is exactly the same as the image on the film, which replaces the viewing screen during exposure." However, Rosenblum didn't give size limits for "large format"; and the book includes view camera formats smaller than 4x5, which are commonly seen as the smallest of the large format cameras.