The used Mitakon SpeedMaster 50mm f/0.95 for Sony E is a fully manual, fast-aperture prime for Sony E-mount cameras. It’s a predecessor to the Mitakon SpeedMaster 50mm f/0.95 III. Key features include:

Full-Frame E-mount. The Mitakon 50mm f/0.95 produces a large enough image circle to cover the full-frame sensors of the a7 III, a7R III, and a7S II. Since it’s an E-mount lens, it’s also fully compatible with APS-C E-mount cameras like the a6400 and a6500.

Normal-Range Prime. The 50mm focal length offers a normal field of view that’s useful for just about any type of photography.

Fast Aperture. The ultra-fast f/0.95 aperture provides flexibility to shoot in even the lowest of light. It also enables paper-thin depth-of-field for extreme subject/background isolation.

High-Quality Optics. The seven-group/ten-element optical formula features four extra-low dispersion elements and one ultra high-refractive element to ensure image sharpness at all apertures with minimal chromatic aberrations.

High-Quality Build. The metal construction gives this lens a solid feel. Its ultra-smooth manual focus ring works great for both still and video use, while its smooth, stepless aperture ring is ideal for video shooters.

Fully Manual. This lens provides no electronic communication with the camera. You must make all aperture and focus adjustments manually on the lens itself. The aperture you select won’t be displayed on the camera, and it won’t show up in the EXIF data.