Amazon.com: JJC 67mm ND Filter ND1000 Fixed 10-Stop Neutral Density Fader for Canon EF-S 10-18mm, Sony FE 24mm f1.4, Sony FE 20mm f1.8 G, Sigma 16mm f1.4, Sigma 35mm f1.4 & Other
Amazon.com : K&F Concept 77mm ND1000 (10-Stop Fixed Neutral Density Filter) ND Lens Filter, HD Waterproof Super Slim 28 Multi-Layer Coatings Glass Nano-X MRC Filter for Camera Lens : Electronics