For this review, the lens was tested on a Nikon Z7 II using Imatest. Distortion is just +0.71% pincushion. If further correction is needed then there are in-camera and software solutions.
Viltrox will launch a new Air series lens in April, likely the AF 50mm F2.0, with autofocus, E/Z mount, 203.3g weight, STM ...