You can preorder the lens at BHphoto and Venuslens.net
Opticallimits tested the new lens on the Sony and concluded:
The Laowa 85mm f/5.6 2x Ultra Marco APO is a good lens. It delivers a predictable performance across its aperture range. At medium aperture settings, it’s pretty sharp without being truly outstanding. Diffraction takes its usual toll at small apertures and it’s advisable to avoid f/22 at least. That’s also a good idea because of CAs.
