I know some GFX photographers are interested in ALPA making products for Fujifilm GFX cameras, but up until now I think it has gone unnoticed that ALPHA has been pushing the a Novoflex G-Mount to BALPRO adapter that’s made for ALPHA for attaching a GFX to ALPA Bellows on their website. There are other adapters out there, but they seem to have partnered with Novoflex.
ALPA Adapter ring Fuji G-Mount
The adapter allows easy and safe mounting of a Fujifilm GFX body to an ALPA bellows unit or stacking solution. The V-Groove version also allows a comfortable adjustment of the alignment/rotation of the camera body.
Product remarks: ALPA Adapter ring Fuji G-Mount to BALPRO, for mounting Fujifilm GFX camera bodies on ALPA bellows / stacking solution