I recently got the KIPON Pentax 645-Fuji G adapter so I could mount a SMC Pentax A 645 120mm f4 Macro Lens on my GFX for scanning film.
The adapter locks into place on my GFX just fine but the lens is not locking in place on the adapter. It rotates about an inch and seems to hit a hard stop. There is a little metal tab on the outside of the adapter that can slide in/out a very small amount but moving that one way or another doesn't seem to do anything.
Does anyone know how the lens should be locking onto this adapter or if there's anything special I need to do? I tried to google this but I'm not finding much information and t he manual for the adapter is quite sparse.
Jun 24, 2026 at 08:49 AM
Previous versions of Bruce Marriner's message #17060766 « KIPON Pentax 645-Fuji G Adapter question. »
