NiSi 67mm Adapter Ring for Swift System Filters 62mm The Leofoto G2 Geared Tripod The Leofoto G2 Geared Tripod Head is Arca Swiss compatible and easily used with a Leofoto ballhead You will also find 49 to 58mm and 52 to 58mm step up ring set that permits the use of the close up lens on other camera lenses with smaller filter threads The filter simply attaches to the adapter by pressing into the NiSi Adapter Ring for Swift System Filters which then screws onto the lens The NiSi Adapter Ring for Swift System Filters is designed to enable you to use a filter designed for the Swift System to be attached directly to the lens without the need for the NiSi True Color 1 5 Stop VND (Variable Neutral Density filter)