ND Filter Comparison - Hoya vs Tiffen vs K&F Concept

I compared three variable ND filters from 55 Bucks to 200 Bucks and found some surprising facts which I want to share with you. Is more expensive really better?

I used:
Tiffen variable ND filter 77 mm: https://amzn.to/2HywxN2
Hoya variable ND filter 77 mm: https://amzn.to/30eZUKO
K&F Concept ND2-ND32 nano slim variable ND filter 77mm: https://amzn.to/3mY5Wt3

My lenses:
RF 15-35 f2.8: https://amzn.to/30k3LGG
RF 24-105 f4: https://amzn.to/3mZOvZ0
RF 35mm f1.8: https://amzn.to/2SadHy0

My other gear:
Canon EOS R: https://amzn.to/3457vNa
My tiny drone: https://amzn.to/349SaLg
My camera bag: https://amzn.to/34c5oXQ
My camera microphone: https://amzn.to/36eTFuh
My lavalier microphone: https://amzn.to/3n38VQQ
My gimbal: https://amzn.to/36sY0KL
My RGB LED lights: https://amzn.to/2Hx3CJc
My tiny RGB LED lights: https://amzn.to/36j6Ni2
My other LED lights: https://amzn.to/2EGvEAY
My keylight: https://amzn.to/33aU5jj
My lightdome: https://amzn.to/3kPDaca

Видео ND Filter Comparison - Hoya vs Tiffen vs K&F Concept канала Ronald Kasper