Amazon.com : Neewer 77mm Variable Fader ND Filter Neutral Density Variable Filter ND2 to ND32 (1-5 Stop) for Camera Lens + No Black Cross + Multilayer Coating + Ultra-Thin Frame Design : Electronics
Amazon.com : NEEWER 77mm MRC Variable ND Filter ND2-ND400, Neutral Density Adjustable ND Filter (0.3 to 2.7,1 to 9 Stops), Multi Layer Coated Optical Glass, Water Repellent & Scratch Resistant Ultra Slim
Amazon.com : Haida 2 in 1 CPL + VND Filter for Camera Pro II Multi-Coating Circular Polarizer + Variable Neutral Density SLR Camera Lens Filter Waterproof Scratch Resistant Nano-Coating Filter 77mm : Electronics
Amazon.com : K&F Concept 77mm Variable Fader ND2-ND32 ND Filter and CPL Circular Polarizing Filter 2 in 1 for Camera Lens No X Spot Waterproof Scratch Resistant (Nano-X Series) : Electronics
Amazon.com : PROfezzion 77mm Variable ND Filter Multi-Coated ND2-ND400 Variable Neutral Density Fader for Canon EF 16-35mm f4L /Sigma 24mm f1.4 DG HSM/Nikon AF-S 20mm f1.8G ED Kit Lens & Other Camera
Amazon.com : Hoya 77mm Variable Density Screw-in Filter : Camera Lens Neutral Density Filters : Electronics
Amazon.com : PolarPro 77mm Peter McKinnon Variable ND Filter | Mist Edition II (2-5 Stop) : Electronics
Amazon.com : SYRP 67mm Variable Neutral Density ND Filter 0.3 to 2.55 (1 to 8.5 Stops) : Electronics
Amazon.com : K&F Concept 77mm ND Fader Variable Neutral Density Adjustable ND Filter ND2 to ND400 Compatible with Canon 6D 5D Mark II 5D Mark III,Nikon D610 D700 D800 DSLR Cameras +
Amazon.com : K&F Concept 77mm Fader ND Filter Neutral Density Variable Filter ND2 to ND32 for Camera Lens NO X Spot,Nanotec,Ultra-Slim,Weather-Sealed : Electronics