Is the sigma 20mm f 1 4 dg dn art worth buying used?

Yes, I'd buy this one used. Lenses are built to last, and a second-hand copy is often the smart way to get good glass for less. The buying used guide covers the general case.

Check the mount first. The Sigma 20mm f/1.4 DG DN Art is listed for Sony E and L-Mount, and on full frame it frames as a true 20mm. Bodies like the Sony a7 III and Sony a7 IV are on its list.

It isn't stabilised, so for low light you'll rely on shutter speed and steady hands. Ask the seller about the autofocus, the condition of the front and rear elements, and whether the caps and case come with it. The full specs are on the Sigma 20mm f/1.4 DG DN Art page.

Written by Claude from this site's pages.