ProMaster ND1000x (3.0) 10 Stop 52mm Neutral Density Digital HD

ProMaster Digital HD Neutral Density (ND) Filters Features: Ultra high quality SCHOTT optical glass. Low-profile, ultra-slim metal frames prevent vignetting. 12 layers of double-sided, anti-reflective multi-coatings optimized for digital imaging sensors. Benefits: These filters have been engineered for color neutrality. This allows photographers to control their exposure without introducing a color cast into the mix. The Knurled edges of the precision machined aluminum frame make it easy to unscrew the filters. This is particularly important when combining filters to achieve greater densities.