The Tiffen 4 x 4" ND 0.9 Hard Edge Graduated Filter is a graduated neutral density filter that helps to specifically darken skies and other bright areas of the image.

The filter is densest at the edge and fades to clear in the middle, with a sharp transition line between the dense and clear areas.

Neutral density filters do not affect the colouration of the image and the 0.6 density provides a 2-stop reduction in the light entering the lens.

This filter is made from Water White glass and is produced using ColorCore technology, a process that laminates the filter substrate between 2 pieces of optical glass and grinds it flat to a tolerance of 1/10,000th of an inch. This filter measures 4 x 4" / 101.6 x 101.6 mm.

-ND 0.9 Hard Edge Graduated filter to darken skies and other bright areas of the image.
-Provides a 3-stop reduction in light in selected areas.
-Neutral density filters do not affect the overall colouration of the image.
-Water White optical glass for excellent clarity.