Today Zhong Yi Optics officially released the new Mitakon Speedmaster 50mm f/0.95 III full-frame mirrorless lens for Nikon Z-mount. The lens is available for pre-order at Adorama, B&H and is currently in stock at eBay. Sample photos can be found here. Additional information on the lens is available here:
The new Mitakon Zhongyi Speedmaster 50mm f/0.95 Mark III lens for Nikon Z-mount to be released soon
Speedmaster 50mm f/0.95 III full-frame mirrorless lens for Nikon Z-mount officially announced