K & F Concept lente de filtro ND de ND2 ND32 magnético, densidad neutra Variable, capa múltiple recubierta, 49mm, 52mm, 58mm, 62mm, 67mm, 77mm| | - AliExpress
Filtro de Densidad Neutra Variable 77mm
77mm Filtro de densidad neutra FOTGA Ajustable Variable de Fader Slim ND2 a ND400 densidad neutra | eBay
Amazon.com : Neewer 77mm Variable Fader ND Filter Neutral Density Variable Filter ND2 to ND32 (1-5 Stop) for Camera Lens + No Black Cross + Multilayer Coating + Ultra-Thin Frame Design : Electronics
Amazon.com : K&F Concept 77mm Variable ND Filter ND2-ND32 Camera Lens Filter (1-5 Stops) No X Cross HD Neutral Density Filter with 28 Multi-Layer Coatings Waterproof : Electronics