The Schneider 72mm f/5.6 Super-Angulon XL Lens is a long-time professional's favorite for use as a wide angle lens for the 4x5 format. It provides an angle of view on 4x5 which is similar to a 19mm lens in the 35mm format, but with a very large image circle to allow creative control for the photographer-in fact, it has the largest image circle of any 72mm large format lens. The Super-Angulon XL lenses have extremely high correction of distortion, which is critical in architectural photography. Beyond the coverage, the lens' large f/5.6 maximum aperture helps to ease the difficulty of focusing the camera in poor light.