K&F Concept 100x100 ND1000 filter - 10 stops grijsfilter

Hoya Grijsfilter NDx4, HMC Multi Coated - 2 stops - 27mm

Marumi Grijs Variabel Filter DHG ND2-ND400 55 mm

K&F Concept ND1000 Filter Nano X - 10 stops grijsfilter 77mm

Hoya Grijsfilter PRO ND16 - 4 stops - 58mm