>>41418983 and a half stops of vignette at 14mm, that's the same as Sony gets on its 12-24 f4 at 12mm, and half a stop worse than it at 14mm.
Honestly I'm starting to think that the large mount is causing problems with vignette more than solving them. When you stop down your aperture, does your vignette get worse or better? Maybe the same thing is happening with their oversized mount.
