Tiffen 6.6x6.6" Water White Glass Hard Edge Graduated ND Filter, 0.3 (1 Stop)

Tiffen W6666CGN3H 6.6x6.6" Clear Neutral Density (ND) 0.3 Hard Edge Graduated Filter is manufactured using ColorCore technology, a closely guarded proprietary process that entails permanently laminating the filter material in between two pieces of optical glass that are ground flat to tolerances of a ten-thousandth of an inch, then mounting them in precision metal rings. The ColorCore process allows us to control the color and density of Tiffen filters and the characteristics of special effects filters with much greater accuracy than typical dyed-in-the-mass filters, which usually exhibit color and density .When Tiffen filters are ground and polished, the ColorCore is unaffected, so color and density remain uniform. Indeed, when you hold a group of Tiffen filters of the same type against a white sheet of paper, they all look identical - because they are! Try this with our competitor's filters and you're likely to see slight variations. Color-Grad Neutral Density Filter Often, you want to balance light intensity between two areas within a scene. This is important outdoors to allow more sky detail while properly exposing the foreground. Exposing for the foreground will produce a washed-out, over-exposed sky, exposing for the sky will leave the foreground dark, underexposed.