Can I adapt the leica elmarit m 90mm f 2 8 to sony e?

I can't confirm a Sony E setup from the site. The Elmarit-M 90mm f/2.8 is listed for Leica M mounts only, and the cameras it fits are all Leica M bodies, so I don't have a Sony E body to pick for you.

The general idea does work. Mirrorless mounts are shallow, so old manual-focus lenses adapt easily and cheaply, and it's a fun way to try a lens like this one. Just expect manual focus only, since this lens has no autofocus. For the adapter basics, see Lenses, and check the Leica Elmarit-M 90mm f/2.8 page for its specs. If you're on an APS-C body, remember the crop factor changes the framing and the depth of field, which the focal length converter explains.

Written by Claude from this site's pages.