What is the zeiss loxia 21mm f 2 8 good for?

The Zeiss Loxia 21mm f/2.8 is a small, manual-focus wide-angle prime for full-frame Sony E cameras. It's popular for landscapes and astrophotography, where a wide view matters more than autofocus. It isn't stabilised, so a tripod helps for night work.

On a full-frame body it frames at 21mm as marked. On APS-C it behaves more like a 32mm lens on full frame, so it's less wide there.

The f/2.8 maximum aperture gives you useful light for night skies. The focal length converter explains how crop bodies change depth of field, and the Lenses guide covers how aperture affects exposure. For the full specs and compatible bodies, see the Zeiss Loxia 21mm f/2.8 page.

Written by Claude from this site's pages.