This is a listing for a Pentax Super-Takumar 28mm F3.5 with an M42 mount. This is the early model with a 58mm filter diameter. It's a wide-angle lens that has gained attention for its flare, which gives a soft texture when shooting against the light, and its ghosting, which appears as if it were digitally added with photo retouching software. I actually attached it to a PENTAX Q10 and took some photos, so please check the sample images. The interesting flare is its charm. By the way, the later model has a 49mm filter diameter. The early model has a gentle, low-contrast, old-lens-like depiction, while the later model has a higher contrast depiction. Please be careful not to make a mistake. ☆Exterior It shows signs of age, but I think it's in good condition. Please zoom in on the photos to check. ☆Optics There are slight dust and dirt, but considering its age, it's clean. Please zoom in on the photos to check. *If you are particular about this, please skip it. ☆Operation No problems. ★Please be sure to check my profile★ *Focusing and infinity focus cannot be guaranteed as they may vary depending on the adapter and camera. *For convenience, it is listed as K-mount. *Due to the nature of used items, scratches, signs of use, and the appearance of the optical system can vary depending on individual perception. *This listing is for the lens only. It does not include any photographic accessories. *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 M42 Pentax