Breakthrough X4 6 Stop ND Filter Size:67mm and folds down to allow

and folds down to allow stacking of multiple smaller lenses or items

*72mm Front Filter

Includes windshield

Super-cardioid polar pattern

enabling the use of various quick-release plates

Breakthrough X4 6 Stop ND Filter Size:67mm and folds down to allowOur cutting edge research and alternative manufacturing methods deliver the most color neutral ND filter for the discerning landscape photographer. In the time that it took us to achieve the X4 NDs unparalleled color neutrality we also took our hand at redesigning the filter frame from the ground up. Worlds Sharpest ND Filter. 100% Guaranteed. The X4 ND features SCHOTT Superwhite B270 optical glass, which is an ultra clear crown glass. It is produced