K&F Concept 100x100 ND32000 filter - 15 stops grijsfilter

Hoya Grijsfilter PRO ND100K - 16 stops - 77mm

K&F Concept Variabel ND Filter ND8-128 Nano X magnetic 52mm

Marumi Grijs filter DHG ND64 77 mm

Hoya Grijsfilter PRO ND4 - 2 stops - 82mm