60mm · f/1.6
The Rathenower Optische Werke Visionar 60mm f/1.6 is a projection lens from the former GDR, optically well corrected and powerful. Its main weakness is the difficulty of adapting for focusing due to its 62mm diameter; a Ukrainian-made helicoid with M39 mount is used, then adapted to Sony E-mount via M42. It suits enthusiasts willing to tackle complex adaptation for a unique, high-performance lens.