How is Rokinon winning over Zeiss and Sigma?
Don't get me wrong, I own a Rokinon 14mm. But they are cheap, low quality lenses compared to Sigma, Canon, Zeiss etc.
(you guys do know that Rokinon, Bower and Samyang are all the same thing right?)
I have the Samyang 12mm F2 on my a6300. Does great, especially since it's literally the (arguably) the best option for APS-C mirrorless astrophotography. Paid $320 for mine though.