The Horseman 72mm f/5.6 Super-Angulon XL Lens is a Schneider 72mm f/5.6 Super-Symmar XL with a standard Copal #0 shutter, but built into a Horseman-specific helical focusing mount and barrel assembly made to fit upon their SW617 Professional medium format panoramic camera. It provides an extremely wide angle perspective on the 617 Professional that's roughly equivalent to the view of a 18mm lens in 35mm terms. A built-in lens guard helps protect the sensitive optics. For critical work with transparencies, the optional Horseman #28997 center filter (B&H code "HOCF72") is highly recommended.
The Schneider Super-Angulon XL 72 is a modern 8-element/4-group wide angle lens design for critical performance in large format cameras. Its 115° maximum coverage provides plenty of room for shift with the 617 Professional. This lens is designed to be shot at f/16-f/22 for ideal performance.