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 Density 52mm | HOYA Filters
Amazon.com : K&F Concept 52mm Variable ND Lens Filter ND3-ND1000 (1.5-10 Stops) Putter Adjustable HD Neutral Density Filter with 28 Multi-Layer Coatings for Camera Lens (Nano-X Series) : Electronics
Amazon.com : Fotga 52mm Slim Fader Variable Adjustable ND2 to ND4 ND8 ND16 ND32 ND400 ND Neutral Density Filter for Nikon Nikkor Z 26mm f/2.8 for Canon EF-S 24mm F2.8 Sony Panasonic
Tiffen 52mm Variable Neutral Density Filter 52VND B&H Photo Video
Hoya Variable Density 52mm Gray Vario Filter - Foto Erhardt
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52mm MCUV+CPL+ND1000+Adapter Ring Magnetic 4 in 1 Lens Filter Kit Waterproof Scratch-Resistant Anti-Reflection with Filter Pouch - KENTFAITH
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NiSi SWIFT 52mm True Color ND-VARIO Pro Nano 1-5stops Variable ND | NiSi Optics USA
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