R1 Filter Rings 165mm (6'' Filters)
Fits in filter stages with ø 165mm.
Like most Filter Stages for MB-14, MB-28 & SMB-1.
Filter Rings 138mm do take Round Filters in the back with a diameter of 138mm.
Part No: K2.52197.0
R1 6" Filter Ring Ø 114mm
With rubber sleeve for Master Prime Lenses, UP14mm, UP180mm, LDS-UP 14mm and LDS-UP 180mm.
Takes reduction rings size R4

Part No: K2.66057.0
R1 6" Universal Filter Ring Ø 150mm
For VP1, VP2, VP3, Cooke 18-100 and Cinetal 25-250.
Takes reduction rings size R8.

Part No: K2.0001174
R1 6'' Tilting Filter Ring 150mm
2-part bellow ring (R1) designed to follow the tilt movement of the SMB-1. Compatible with all R8 screw-on rings (and R4 screw-on rings via K2.66095.0)
