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Motorised variable ND filter for professional film production
Motorised variable ND filter for professional film productions — Cinefade
Amazon.com : JJC 2-in-1 67mm Variable ND Filter & CPL Polarizer Filter, 5 Hard Stops ND2-ND32 Adjustable Neutral Density Filter, Including Moistureproof Storage Case and Lens Cap : Electronics
Motorised variable ND filter for professional film production