K&F Concept 55mm ND8 (3 Stop) Lens Filter, Fixed Neutral Density Filter with HD 18 Layer Dual Side Multi-Coated, Ultra Slim Frame Optical Glass Nano-X Series for Camera Lens Size:55mm it is compatible with digital

it is compatible with digital cameras like Nikon/Canon

2 & 3 on the 3 pin side

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K&F Concept 55mm ND8 (3 Stop) Lens Filter, Fixed Neutral Density Filter with HD 18 Layer Dual Side Multi-Coated, Ultra Slim Frame Optical Glass Nano-X Series for Camera Lens Size:55mm it is compatible with digitalK&F Concept 55mm ND8 (3 Stop) Lens Filter, Fixed Neutral Density Filter with HD 18 Layer Dual Side Multi Coated, Ultra Slim Frame Optical Glass Nano X Series for Camera Lens K&F Concept Nano X ND8 Filter K&F Concept Neutral Density ND8 (3 Stop) Filter , HD Waterproof Scratch Resistant Fixed ND Lens Filter K&F Concept neutral density ND8 filter provides a fixed 3 f stop light reduction, which allows long exposure and motion blur techniques in brighter