... waterfalls,streams,waves,etc. Index marks on the edge of filter for exace adjustment.Filter housing ... thickness: 11.0mm,almost the slimest in the current market.Refinement texture as Hoya ... 67mm, 72mm, 77mm, 82mm, 86mm With the high import CPL filter,Viltrox HD Variable ND Filter never damage ... the clear image and color.Neutral ...