A full frame, fast, 50mm manual prime ideal for low light photography of any kind.
Note that its transmission at full aperture of f/0.95 is closer to T/1.5.
The aperture ring is clickless.
This is the 2nd incarnation of the lens codename “Dark Knight”.
Accessories: 67mm Hoya UV filter, original plastic hood, additional shorter & more sturdy aluminum hood,
Focal Length: 50mm (full-frame), 75mm (Sony APS-C)
Mount Type: Sony-E
Angle of view: 46.79° (full-frame), 32.03° (Sony APS-C)
Min. Focus Dist.: 50 cm
Iris Blades: 9
Focus Type: manual
Filter Thread: 67 mm
For a full review of the lens see https://phillipreeve.net/blog/review-zhong-yi-mitakon-50mm-0-95-dark-knight/