Re: For Astro- 16-35mm iii, Sigma 14mm f/1.8 or Zies 15mm f/2.8
I have a 15-30 tamron zoom and after much study decided it was probably the best zoom available for astro work. The canon 16-35 III to me is unacceptable vignetting and poor coma. My widest lens for this work is the sigma 14mm f1.8. It needs to be stopped down to f2 for the same vignetting as the tamron and coma is better with the tamron.
In 14mm, the Rokinon SP 14mm f/2.4 is the only other one I considered. It is generally considered the best of the Rokinon 14mm lenses. Coma is better with the rokinon compared to the sigma but vignetting worse. The Rokinon is probably/maybe the better astro lens and a lot cheaper.
Aug 17, 2019 at 10:12 PM
Previous versions of Flowernut's message #14948745 « For Astro- 16-35mm iii, Sigma 14mm f/1.8 or Zies 15mm f/2.8 »
