Tiffen Graduated ND Attenuator/Blender Filter (67mm, 2-Stop)

This 2-stop, 67mm Graduated Neutral Density Attenuator/Blender Filter from Tiffen is densest at one edge where it corresponds to a reduction of light entering a lens by 2 stops and tapers to clear at the other edge. Its gradation can be used to selectively darken an image from edge to edge, allowing for wider apertures or reduced shutter speeds. While this graduated attenuator/blender's 0.6 density can be applied to bright skies, the remaining regions of the image are exposed with a progressively decreasing effect.