Is the sigma 135mm f 1 4 dg art good for portraits?

Yes, for portraits this is a very good pick. On full frame it gives a 135mm view, which is in the telephoto range where faces look most natural. At f/1.4 the background falls away nicely, and you can stand well back from your subject, as the Portraits guide recommends for tight headshots.

It's made for full frame and fits Sony E and L-Mount bodies, including the Sony a7 III. It isn't stabilised, so keep your shutter speed up for handheld work. On APS-C it frames like about 202mm, which is a lot of reach indoors, so it's better suited to full frame for most portrait work.

Written by Claude from this site's pages.