... ,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 Lens Filter.More beautiful.Material:Aliumium Alloy Frame and HD Optical Glass ... 49mm ,52mm,55mm,62mm,67mm,72mm,77mm,82mm Fader ND filter for camera