Is the sigma 135mm f 1 4 dg art sharp wide open?

I don't have test results on how sharp this lens is at f/1.4, so I can't tell you whether it's crisp wide open. What I can tell you is that it's Sigma's first autofocus 135mm f/1.4, made for full frame, and it mounts on Sony E and L-Mount.

Wide open, depth of field is very thin, often thinner than a face. If you're shooting two people at different distances, stop down to about f/2.8. For how wide apertures play out in real portraits, see Portraits. For the f-number itself, see Lenses.

Written by Claude from this site's pages.