Nevyn72
LMF-Patron Gold
I don't know if it was posted before (did search for it in the forum), but Panasonic has a nice lens compatibility page:
av.jpn.support.panasonic.com
Here you can see what is supported by the S5ii(X) for which lenses (incluiding Leica & Sigma).
I presume the same results for the other Panasonic Camera's.
Compatibilities of DC-S5M2/S5M2X | Compatibility | Digital Camera | Digital AV | Support | Panasonic Global
av.jpn.support.panasonic.com
Here you can see what is supported by the S5ii(X) for which lenses (incluiding Leica & Sigma).
I presume the same results for the other Panasonic Camera's.