Is the samyang af 14mm f 2 8 good for astrophotography?

The site doesn't have an astrophotography guide, so I can't give you a tested verdict on this lens for night sky work. What I can tell you is what it is: a 14mm f/2.8 autofocus ultra-wide for full frame. That wide view suits Milky Way shots on a tripod, and f/2.8 is a reasonable aperture for the job. It isn't stabilised, but you'd use a tripod for night work anyway. Autofocus is less useful on stars, so expect to focus manually.

On a full-frame body such as the Sony a7 III or the Canon EOS R6, it gives a true 14mm view. On APS-C, like the Sony a6400, it frames more like 21mm, which is less wide for the sky.

For how aperture and depth of field change across sensor sizes, see the focal length converter. For other options, the lenses page covers the wider range.

Written by Claude from this site's pages.