Hoya Grijsfilter NDx400, HMC Multi Coated - 9 stops - 67mm
Hoya Grijsfilter PRO ND4 - 2 stops - 55mm
Green.L ND2000 grijsfilter - 11-stops - 67mm
K&F Concept Variabel ND Filter ND2-400 Nano X - 62mm