This Sony SEL28F20 lens features a 9-blade circular aperture and ED glass with multicoating, so you can easily capture clear photos with minimal ghosting using your a7-series, 35mm full-frame camera.
Wonderful little lens that works great with the Sony mirrorless systems. Fast aperture and fast focusing. You can purchase more add ons in order to make it become 21mm or 16mm fish eye. Works great on my a6300 and a7s2. Perfect for those who want to use on apsc sensors and plan to upgrade to FF.