For Hasselblad B50 to 55mm Filter Adapter Ring Black Bay 50 to 55mm B50 - 55mm
55mm Filter Adapter Ring for Hasselblad B50 (Bay 50 to 55mm). Lens mount: Hasselblad B50. a Hasselblad Lenses with Bay 50 filter mount. regular threaded filter.This adapter ring allows you to mount 55mm filters and accessories on to.