52mm ND8 (3 Stop) ND Lens Filter Fixed Neutral Density Filter for Camera Lens - KENTFAITH
Amazon.com : NiSi 52mm Swift True Color ND-Vario - Variable Neutral Density Filter 1-5 Stops (ND2-ND32) - Rotating Adjustable ND, Compatible with NiSi Swift System Filters - Optical Glass, Waterproof Nano Coating : Electronics
Hoya Variable Neutral Density Filter - 52mm — Glazer's Camera
Amazon.com : K&F Concept 52mm Variable ND Filter ND2-ND32 Camera Lens Filter (1-5 Stops) No X Cross HD Neutral Density Filter with 28 Multi-Layer Coatings Waterproof (Nano-X Series) : Electronics
Irix Edge Neutral Density ND8 filter 52mm | Official Irix brand store