I thinking about adding one of these for Milky Way astrophotography. I wondering about the amount of coma and distortion it has wide open. I know people recommend the Nikon 14-24mm f/2.8 AF-S NIKKOR G ED N as a better lens for astrophotography, but I'm trying to keep things lighter. I'll be using it on a DF.
Currently I'm using a 20mm f/2.8 AI-s Nikkor.
others recommend the Rokinon 14mm f/2.8 but i rather stay with the Nikkor...
opinions?
thanks in advance
Art