Schneider wide-angle converter for Kodak Retina cameras, precision optics from the innovative front-element interchange system.
The Schneider Retina-Curtar-Xenon C 35mm f/4 is a wide-angle front element attachment designed for the Kodak Retina IIC and IIIC rangefinder cameras, converting the standard 50mm lens to a 35mm wide-angle perspective. This Schneider-Kreuznach optic is part of the Retina system's innovative front-element interchange approach.
The Curtar designation indicates the wide-angle converter in the Retina system, where changing the front element group of the fixed Xenon lens altered the focal length while maintaining the rear elements and leaf shutter. The f/4 effective aperture reflects the optical compromises of the conversion, slower than the standard lens configuration.
Build quality is precision Schneider-Kreuznach with quality glass and metal construction engineered to exacting tolerances. The bayonet attachment fits precisely to the Retina host lens, maintaining optical alignment critical for image quality. The compact converter adds minimal size to the camera combination.
The Retina-Curtar-Xenon is a niche collector's item on the used market, primarily of interest to Kodak Retina system enthusiasts who want complete lens sets for their cameras. The innovative front-element interchange approach was unique to the Retina system and represents an interesting chapter in camera lens design history.