Hoya 72mm Variable Neutral Density II ND3-ND400 Digital Filter **NEW DESIGN** 24066069924 | eBay
Amazon.com : Hoya 72mm HMC NDX8 Screw-in Filter : Camera Lens Neutral Density Filters : Electronics
Amazon.com : Hoya 72mm Variable Density Screw-in Filter : Camera Lens Neutral Density Filters : Electronics
Zomei 72mm Fader Variable Nd Filter Adjustable Nd2 To Nd400 Nd2-400 Neutral Density For Canon Nikon Hoya Sony Camera Lens 72mm - Camera Filters - AliExpress