52MM Professional Macro & Lighting Filter Kit for Carl Zeiss Touit 1.8/32, 52 mm CPL + UV + FLD + 4 Piece Close Up Kit & 52 mm Lens Hood, 52mm Filter Bundle Digital Multicoated 3 Piece Filter Kit (UV, CPL, FLD) Close Up Lens Kit (+1, +2, +4, +10) For Macro Tulip Lens Hood to Reduce Glare & Maintains Exposure Levels All Lenses & Filters are Glass, Not Plastic Look at your lens for the symbol  the number next to it is the filter thread size.