Focus Studio Co., Ltd. released the SHOTEN UMS (Universal Mount System) adapters.
The UMS mount adapter has a two-part structure and is a new idea that you can change only the mount part of it so you can mount the adapter on different camera systems.
Down below a video on how it works.
For us GFX shooters these are the adapters of relevance:
- M645-FG-U (Mamiya 645 Mount Lens to Fujifilm G-mount)
- P645-FG-U (Pentax 645 mount lens to Fujifilm G-mount conversion)
- P67-FG-U (Pentax 67 mount lens to Fujifilm G-mount conversion)
- HV-FG-U (Hasselblad V-mount lens to Fujifilm G-mount conversion)
You can read about it more at the Shoten website here.