SLR Magic 86mm Solid Neutral Density 1.2 Enhancer Filter, 4-stop, to go with SLR Magic 82mm Variable Neutral Density Filter. The VND gives you 1.3 to 6 stops of density and adding the Enhancer to the front of it adds an extra 4 stops of density, totalling 10 stops. The Enhancer also adds extra ultraviolet and infra-red filtration.