Carl Zeiss C Sonnar 50mm F1.5 M This is a ZM mount lens, compatible with Leica M mount. It can be used with mirrorless cameras via a mount adapter. Released in 2006, this is the standard 50mm lens of the ZM mount, which was introduced to match the Zeiss Ikon, a luxury rangefinder camera (in other words, it's a Leica M mount, but let me say it...). The "C" stands for the old Contax. The full name at the time of release was ZEISS Ikon C Sonnar T* ZM 1.5/50. It's rare to find new stock these days, and Cosina Zeiss has become a slightly older lens generation. While it uses modern coatings and glass materials, the lens construction is a reproduction of the original, making it a so-called revival lens. Unlike modern lenses that use multiple aspherical elements to increase resolution, this lens offers rich bokeh and a touch of character. I have prepared some sample images using this lens. Looking back at the samples, you'll notice a different look compared to typical modern lenses. When shooting with the sun in the frame during the golden hour, opening the aperture creates beautiful, soft flares, and the light has some bloom, but there aren't many ghosts, showing the characteristics of a modern, coated lens. It's not quite the vibrant colors you'd expect from Zeiss; the colors are a bit subdued. Outside the shallow depth of field, the bokeh is soft, making the subject stand out. The condition is like new. There are no noticeable scratches, and the optics are perfect. It comes with an unwritten warranty and a product registration card. This lens rarely goes on sale and has been increasing in price every year. It's a great buy that hardly depreciates in the used market, so it's also recommended for those who are tempted by the word "free." Accessories: Original box, front and rear caps, instruction manual, unwritten warranty, product registration card *The evaluation is subjective. Please understand that this is a used item. *Returns are accepted, so please feel free to contact us. (For items not discounted, you will be responsible for return shipping costs. Please contact us before leaving a review.)