To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars.
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background.
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure.
ND8 - 0.9 (exposure adjustment = 3 stops, reduces ISO 1/8)

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Product Details

Product Dimensions

Package Dimensions
Width : 3.78 inch
Height : 0.55 inch
Length : 4.33 inch

Item Weight: 0 ounce (View shipping rates and policies)
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ASIN : B0006ZSV1Y