This is a listing for the Rodenstock Ysaron 50mm F50 L39 mount from the prestigious German company Rodenstock. It's an enlarging lens, but as expected from the renowned Rodenstock, it captures images beautifully! The aperture ring has a satisfying click with a pleasant torque. On a NEX5 (SONY E-mount), I was able to achieve infinity focus by using an L39-M42 conversion ring, an M42 helicoid (17-31mm), and an M42-SONY E-mount conversion ring, shooting wide open. Please check the sample photos taken with the NEX5. The rich color rendition is superb! ☆Exterior There are some minor scuffs, but it is in good condition. Please zoom in on the photos for details. ☆Optics There are a few specks of dust and dirt (wiping residue?), but it is generally clear. Please zoom in on the photos for details. *If you are particular about this, please pass. ☆Operation No problems. The aperture feels a little stiff (but this might be normal). ★Please be sure to check the profile★ *This is solely for flange back adjustment on a NEX5 (E-mount). *Focusing and infinity focus cannot be guaranteed as it depends on the adapter and camera used. *For convenience, it is listed under X-mount. *Due to the nature of used items, scratches, signs of use, and the appearance of optical elements can vary based on individual perception. *Only the lens is included in this listing. Photography props are not included. *Defects shown in the images may not be fully described. Please judge from the images before purchasing. Not all defects can be photographed and described, so please refrain from purchasing if you do not understand the nature of used items. *No claims, no returns, please. Other features: Old lens L39 mount M39 mount