This rear lens filter kit contains four neutral density filters; ND 0.9 (3 Stop), ND 1.2 (4 Stop), ND 1.8 (6 Stop), ND 3.0 (10 Stop), and a dedicated adapter ring. ND 0.9 (3-Stop). ND 1.2 (4-Stop). ND 1.8 (6-Stop).