enlarger lens to Sony E-mount helicoid adapter

cults3d

This adapter features interchangeable lens mounts with built-in helicoid focusing, ideal for vintage M39 enlarger lenses. To achieve infinity focus, each focusing adapter must be precisely designed to match its corresponding lens' focal length. Multiple barrel lengths - 13mm, 22mm, and 33mm - are included, accommodating M39 lenses with focal lengths ranging from 40-60mm. Extension rings can also be used for longer focal lengths or macro applications. A separate mount is provided for M16 threaded lenses, such as the Wray 2" Supar. Tested with Schneider K Componar-C 50/3.5, Vivitar 50/3.5, and Wray 2" Supar using the x22mm adapter, and Rodenstock Rodagon-WA 60/4 using the x33mm adapter. For lenses longer than 75mm, an STL"x33mm" helicoid is required, accompanied by a 16mm extension (e.g., S Kominar-E75/3.5). The Ross 90mm Resolux necessitates an 18mm extension.