Tiffen 67mm Color Graduated Neutral Density 0.6 Filter Product FeaturesSize: 67mm Half color, half clear with a graduated density transition for a smooth blending of color Also for use in black-and-white imaging 67mm diameter Neutral gray appearance drops exposure Product DescriptionSize: 67mmAmazon.com Product DescriptionThe perfect solution to transform a pallid sunrise or sunset into something spectacular. A neutral density 0.6-to-clear is often best for balancing sky to foreground.Product DescriptionOften, you want to balance light intensity between two areas within a scene. This is important outdoors to allow more sky detail while properly ...