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 Variable ND2-32 Lens Filter & Filter Cap Kit (2 Pcs) Adjustable Neutral Density Lens Filter with TPU Filter Cap for Lens Filter : Electronics
Amazon.com : 77mm ND Variable Neutral Density Filter for Fuji 100-400mm f/4.5-5.6 R LM OIS WR Lens : Electronics
Amazon.com : Hoya 77mm Variable Density Screw-in Filter : Camera Lens Neutral Density Filters : Electronics
Amazon.com : PROfezzion [2 in 1] 77mm ND Filter [ND2-ND32] and CPL Polarizer Polarizing Filter, Variable Neutral Density Adjustable Fader with 5 Hard Stops for Canon/Nikon/Tamron/Sigma Lenses : 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 : K&F Concept 77mm ND8 (3-Stop Fixed Neutral Density Filter) ND Lens Filter, 28 Multi-Layer Coatings HD Hydrophobic Ultra Slim Nano-X Series Filter for Camera Lens : Electronics
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 : 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 : Tiffen 77VND 77mm Variable Neutral Density Filter for Camera Lenses, Black : Camera Lens Round Filters : Electronics
Amazon.com : 77mm Variable ND2-400 Lens Filter ARTCISE Multi Resistant Coated Optical Glass Adjustable Camera Lens Neutral Density Filters with Cleaning Cloth for Canon Nikon Sony DSLR : Electronics
Amazon.com : LENSKINS 77mm ND 1000 Filter, 10 Stop Neutral Density Filter for Camera Lenses, 16-Layer Multi-Resistant Coated, German Optics Glass, Weather-Seal ND Filter with Lens Cloth : Electronics