Is the viltrox af 9mm f 2 8 air worth buying used?

Yes, I'd buy this one used. Lenses last a long time, and the buying used page explains why the second-hand market is one of the best ways to get good gear for less.

The 9mm f/2.8 Air is a small autofocus prime for APS-C cameras. It frames like about 14mm on full frame, which makes it a good wide-angle choice for landscapes, interiors and street work. It isn't stabilised, so it works best in decent light or with a steady hand.

Check the mount before you buy. It's made for Sony E, Fujifilm X and Nikon Z. Full-frame bodies can use it too, but only in APS-C crop mode, at fewer megapixels.

Written by Claude from this site's pages.