Tiffen 55HTND6 55MM Digital HT ND 0.6 Titanium Filter Product FeaturesSize: 55mm provides control over depth of field and exposure. High light transmission charachteristics Light weight metal mount hardened coatings for better durability Matte Black anti-reflecting inner ring. Product DescriptionSize: 55mmAbsorbing 1 stop,of light this filter helps Provide a balanced exposures and better depth-of-field control. High-Trans Titanium Filters have very high transmissive properties utilizing multicoatings and a Titanium oxide component. These filters are mounted in a light weight metal ring with a matte black anti reflective inner ring and a Titanium ...