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
Amazon.com : 55MM Lens Filter Kit by Altura Photo, Includes 55MM ND Filter, 55MM CPL Filter, 55MM UV Filter, (UV, Polarizer Filter, Neutral Density ND4) for Camera Lens w 55MM Filter +