Cat. No. fdbayIV-49mm
Bayonet IV to 49mm Screw Thread Adapter Ring for Rolleiflex FW and FT TLR Cameras
This is a small silver anodized adapter ring of good quality supplied by Fotodiox to adapt easily purchased filters in 49mm standard screw mount threads such as infrared filters or polarizing filters. This adapter allows the screw in filters to work like a bayonet mounted filter on your TLR.
