The Rodenstock Helical Focus-Mount for HR Digaron-SW 90mm f/5.6 Lens permits the use of this specific large format lens, mounted in a Copal 0-sized shutter, on cameras without a bellows, such as a panoramic or shift-type camera. Its non-rotating lens mount design maintains the original orientation of the shutter during focusing for familiar handling and operation. The focusing barrel is demarcated in both feet and meters and a depth of field scale is also available for hyperfocal and selective focusing control.
When installed with the HR Digaron-SW 90mm f/5.6 lens, a focusing range of 4.3' / 1.3m to infinity is available.