The Schneider-Kreuznach Xenotar 150mm f/2.8 is a fast large format lens with a 5-element, 4-group design and 56-degree angle of view. Its 160mm image circle covers 4x5in format with limited movements. At 875g with an M 77 filter thread, the exceptionally fast f/2.8 aperture at this focal length was rare among large format lenses, making it prized for portrait photography with very shallow depth of field.