The Cokin 58mm PURE Harmonie Variable Density Neutral Gray Filter: A variable ND filter that provides a reduction of about 1 to 8 stops. The 0.3 to 2.4+ (ND2-ND300) density creates a darkening of the entire image, allowing you to photograph with a wider aperture (or slower shutter speed) than normally required. Control the degree of density by rotating the front filter ring. For easier, repeatable control over density settings, the front ring is also visually demarcated with dots that represent one stop of neutral density.
The EVERCLEAR 5 Coating Technology is a multi-layered anti-reflective coating applied to the filter substrate in order to maintain effective light transmission and suppress surface reflections and flar—the coating provides protection against water, oil, dust, soil, and scratches. This optical glass filter is set in a thin aluminum ring, which measures just 9.5mm-thick. This slender profile is ideally suited for use with wide-angle lenses in order to lessen vignetting. The suggested retail price is $108.99.