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 respectively Unifoc 7 Helical Mount makes this possible. It is extremely compact with 12 mm respectively 7 mm of displacement.
In the shortest setting, the mechanical length is 17.4 mm with the Unifoc 12 and 20 mm with the Unifoc 7. It comes complete with a focus locking screw.
UV & IR cut filters block troublesome UV/ VIS or NIR light. They are robust, cost-effective and insensitive to angle of incidence. Additional to their filter function they are also a protective window in imaging systems.
Cut filters are available unmounted in sizes from 10 mm to 74 mm diameter and mounted with common thread sizes M 25.5 to M 67.
We offer several AR coating options, depending on filter type. Also available as filter kit.