LightPix Labs announced a new CoGrip thumb rest for Ricoh GRIV/GRIII cameras with fully functional TTL hot shoe pass-through. You can get one from Amazon or B&H Photo (models for other cameras are also available). Additional information: CoGrip thumb grip with full-function TTL hot shoe pass-through Ergonomic thumb rest constructed from precision-machined aluminum. Integrated full-function … Continue reading New: LightPix CoGrip thumb rest with fully functional TTL hot shoe pass-through for Ricoh GRIV/GRIII cameras