Not an F-mount. ・Mount: Contax/Yashica High-quality 85mm f/1.4 prime lens. This is a CONTAX Carl Zeiss Planar T* 50mm F1.4 (Y/C mount) lens. It's a standard lens with a focal length of 50mm and a wide open aperture of F1.4. It's also known as the "Emperor of Standard Lenses," and its appeal lies in its ability to produce both sharp and soft images. The minimum focusing distance is 0.45m. I am not a specialist, but I didn't see any haze or dust, but please refrain from purchasing if you are concerned about minor dust particles. C/Y CONTAX YASHICA - Lens Model: Planar 1.4/85 - Country of Manufacture: Japan - Maximum Aperture: f/1.4 - Focal Length: 85mm - Lens Condition: Good As I am not very knowledgeable about cameras, I would appreciate it if you could make your judgment based on the photos. [Other] Please refrain from purchasing if you are looking for perfection or are overly sensitive, as this is a used item. Thank you for viewing.