Here is a video review of the NiSi filter holder kit for Ricoh GR III (and the Q20ii flash): Another NiSi filter holder kit for Ricoh GR III review: One more review that includes the NiSi filter holder kit for Ricoh GR III: DC.Watch published a review of the NiSi filter holder kit for Ricoh GR III: … Continue reading NiSi filter holder kit for Ricoh GR III reviews