This is a Praktina lens adapter with sony E mount.You can modify the design to adapt the lens to the cameras.support are recommended | Sony, Adapter, Sony e mount
EXA Exakta mount adapter guide | Vintage Camera Lenses
Praktina lens to Canon EOS EF mount camera adapter - c7Adapters
Praktina-EOS-Adapter | Adapter mit Chip | Willi Nemski | Flickr
Praktina FX Germany Professional Camera Outfit 3 Lenses Flash and Adapter | #1931044641
Adaption Praktina an EOS
Praktina FX mount adapter to Canon EF/EFS, EOS | eBay
Captain Jack's Praktina Accessories
Praktina FX Lens onto Samsung NX Mini mount adapter with close focus adjustable | eBay