Hoya Grijsfilter PRO ND64 - 6 stops - 62mm
K&F Concept Variabel ND Filter ND2-400 Nano X - 86mm
Green.L ND1000 grijsfilter - 10-stops - 86mm
Hoya Grijsfilter NDx400, HMC Multi Coated - 9 stops - 67mm