B + W Adapter Ring for Filter holder 77 mm
Adapter rings for filters with diameter Ø 52/55/58/62/67/72/77/82 mm.
B + W filter holders are used with square filters 100 x 100 x 2 mm and can hold up to 3 pcs. The filter holder is made of aluminum frame for increased stability. The adapter ring is required for filters of other sizes.