Leica summilux sl 50mm f 1 4 asph vs sigma 50mm f 1 2 dg dn art?

The Sigma is the faster lens. Its f/1.2 gives you a bit more than a third of a stop over the Leica's f/1.4, which matters for low light and very shallow backgrounds. It also works on Sony E and L-Mount bodies, while the Leica Summilux-SL 50mm f/1.4 ASPH is L-Mount only.

The Leica's appeal is that it's the 2026 redesign, smaller and lighter than the first version, so it's easier to carry all day. Both are full frame, 50mm, autofocus, and not stabilised. If you're on Leica SL or Panasonic, the Leica is the natural choice. If you want the faster lens or you might switch to Sony, take the Sigma 50mm f/1.2 DG DN Art. For a broader view of what a 50mm does for people, see portraits.

Written by Claude from this site's pages.