B+W 58mm Hard Edge Graduated Neutral Density 702 MRC 0.6 Filter (2-Stop)
Because it attenuates the light twice as much as the 701M Filter, i.e. by two aperture stops (it transmits 25% of the incoming light), this graduated filter already produces quite dramatic effects. Because of the increased difference in brightness, it is even more important for the horizon line not to be positioned too far from the center of the image.
Note: The (701M) and (702M) series of filters are supplied in a rotating mount (except 4x6 filters), similar to that of a polarizer. Made of optical glass with multi-resistant coating (MRC).