K&F Concept
K&F Concept 52mm Variable ND CPL Filter, ND4-ND64 & Polarizing CPL Circular Polarizing Fader Neutral Density Filter 2 in 1 for Camera Lens No X Spot Multi-Coating (Nano-X Series)
Hoya
Hoya 52mm HD3 Circular Polarizer Filter
K&F Concept
K&F Concept 52mm Variable ND CPL Filter ND2-ND32 & Polarizing CPL Circular Polarizing Fader Neutral Density Filter 2 in 1 for Camera Lens No X Spot Multi-Coating (Nano-X Series)
NiSi
NiSi 52mm True Color CPL Filter - Circular Polarizer Lens Filter with Multi-Nano & Ultra-Low Reflection Coating
Urth
Urth 52mm Circular Polarizing (CPL) Lens Filter — Multi-Coated, Slim Design for Camera Lens Polarization
GOBE
Gobe 52mm Circular Polarizing (CPL) Lens Filter (3Peak)
NEEWER
NEEWER 2 in 1 52mm Variable ND Filter ND2–ND32&CPL Filter(Circular Polarizer Filter) No X Cross/30 Layer Nano Coated/HD Optical Glass/Ultra Slim Aluminum Alloy Frame/Water Repellent/Scratch Resistant
K&F Concept
K&F Concept 52mm True Color Polarising Filter Circular Polarizing CPL, Ultra Definition, 28 Layer Multi Coated Polarized MRC Filter (Nano-X Series)
Hoya
Hoya 52mm HRT Circular PL Polarizer UV Multi-Coated Glass Filter