Yongnuo is rumored to announce their first full-frame mirrorless autofocus lens for Nikon Z-mount - the 50mm f/1.8 Z DF DSM.
In the US, Yongnuo lenses are sold at Adorama, B&H, and Amazon.
Viltrox was the first to sell full-frame mirrorless autofocus lenses for Nikon Z-mount.
Yongnuo recently announced a new 50mm f/1.8S DF DSM full-frame lens for Sony E-mount - I think the new Z-mount version will be based on that lens:
- Aperture ratio: 1: 1.8-1: 16.
- Focal length: 50mm (EGF for Sony E APS-C is 75mm).
- Minimum focusing distance: 45 centimeters.
- The maximum magnification ratio is 1: 6.67.
- The optical design consists of: 11 elements in 8 groups, with 6 special optical elements.
- Automatic focusing with DSM (Digital Stepping Motor).
- Aperture: 9 rounded blades.
- AF / MF focusing mode switch.
- Filter diameter: 58 mm.
- Programmable control button FN.
- USB TYPE-C port for firmware upgrades and lens adjustments.
- Weight: 395 grams.
- Protected case.
Via NikonRumors