Amazon.com : K&F Concept 46mm Variable ND Lens Filter ND2-ND400 (1-9 Stops) 18 Multi-Layer Coatings Adjustable Neutral Density Ultra Slim Lens Filter for Camera Lens (K-Series) : Electronics
Amazon.com : NEEWER 46mm Variable ND Filter ND8-ND128 Camera Lens Filter (3-7 Stop) No X Cross Neutral Density Ultra-Slim HD Filter with 30 Multi-Layer Nano Coatings Waterproof, Cleaning Cloth Included : Electronics