Is the zeiss loxia 21mm f 2 8 good for astrophotography?

The site describes the Zeiss Loxia 21mm f/2.8 as popular for landscapes and astro, and I agree it suits night sky work on a full-frame body. It's a wide 21mm, so it takes in a lot of sky, and f/2.8 is a sensible aperture for letting in light after dark. It's manual focus and not stabilised, so you'll focus by hand and use a tripod.

It only works as a full-frame lens. On APS-C it frames like about 32mm, which is a much narrower view of the stars. If you're shooting on a full-frame Sony E body, such as the Sony a7 III, it's a good match. For more on what the aperture number does in the dark, see the lenses guide, and check the lens page for the full list of compatible cameras.

Written by Claude from this site's pages.