Schneider Optics 25-011726 Macro UNIFOC-12 Focus Mount Lens 12mm Displacement
Product is new in box, sealed in original packaging.
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Enlarging lenses have no built-in helicoid, because they are usually focused using a bellows on the enlarger. Therefore, in order to focus an enlarging lens when it is used on a camera, a helical mount is needed. The Unifoc 12 Helical Mount makes this possible. It is extremely compact with 12mm of displacement.
In the shortest setting, the mechanical length is 17.4mm. It comes complete with a focus locking screw.
Mount type: helical
Displacement: 12 mm
Length: 17.4 mm