Hoya Grijsfilter NDx400, HMC Multi Coated - 9 stops - 72mm
Cokin ND-X Variabel Grijsfilter - Super Slim - 52mm
Green.L ND2000 grijsfilter - 11-stops - 67mm
Hoya Grijsfilter PRO ND4 - 2 stops - 55mm