Cosina has presented one of the fastest 50 mm lenses for the Sony E bayonet, namely the Voigtländer Nokton 50 mm f/1.0. With the help of aspherical lenses, first-class image quality is possible despite the large aperture, and the lens is relatively compact.https://www.notebookcheck.net/Voigtlaender-unveils-extremely-fast-50-mm-f-1-0-full-frame-lens-for-Sony-A7-A9-and-the-like.803773.0.html
In this Techart world, who really cares about manual lenses that stick on the E mount? Without being on the Techart, a manual lens cannot focus a closely, there's no tie-in with the IBIS and well, no autofocus. So basically no fun and a lot of "almost got it" shots and nothing of anything in motion with this lens. Complete groaner.