First launches of the Nikon Z system show that in this case the producers are going to follow similar tactics. It's really splendid that several interesting f/1.8 primes were added to that system so soon, especially that prices of new full frame mirrorless instrumets are usually quite steep; if...
solid; weather-sealed and mostly metal barrel,; excellent image quality in the frame centre,; very good image quality on the edge of the APS-C/DX sensor,; moderate longitudinal chromatic aberration,; negligible lateral chromatic aberration,; not especially bothersome spherical aberration,; lack of...
distinct vignetting on full frame,; a lot of coma-related problems.