A came across this Magfilter adapter ring for Ricoh GR III cameras listed for sale on Amazon:
Spotted at the Rioch GR Facebook group:
More Ricoh GR III filter solutions:
New: H&Y magnetic filter adapter for Ricoh GR III and GR IIIx cameras
A came across this Magfilter adapter ring for Ricoh GR III cameras listed for sale on Amazon:
Spotted at the Rioch GR Facebook group:
More Ricoh GR III filter solutions:
New: H&Y magnetic filter adapter for Ricoh GR III and GR IIIx cameras