One of the items on display at the Sigma booth at this year’s CP+ show in Yokohama was the newly-announced MC-21 adapter that allows Sigma lenses to be used on L mount cameras. There are two versions of the adapter: one that accepts Sigma SA-mount lenses and another that takes Sigma’s EF-mount lenses.

Here’ we’ve got an SA-mount version of Sigma’s 50mm F1.4 Art adapted to a Panasonic S1.
…
Read full post here:
https://www.dpreview.com/articles/3970341505/hands-on-with-the-sigma-mc-21-sa-ef-to-l-mount-adapter