K&F Concept 77mm ND8 to ND128 Variable Neutral Density Filter Slim Fader ND Filter 77mm 3-Stop to 7-Stop for Camera Lens NO X Spot,Nanotec,Ultra-Slim,Weather-Sealed: Buy Online in OMAN at desertcart
Genustech 77mm Variable Neutral Density and Circular G-PND77 B&H
How good is a $50 ND filter? | GOBE ND Filter Review | ThatModernDude - YouTube