Kipon launches EF to Sony E adapters with built-in variable ND filter: Digital Photography Review
Amazon.com : JJC Dedicated Metal Filter Adapter Lens Adapter for Sony ZV-1 II RX100 VII VI RX100M7 RX100M6 for Canon G5X Mark II Installing 52mm UV CPL ND Filter,Includes 52mm Snap-On Lens
NDT Fusion Auto Adapter - Canon EF Lens to L-Mount Cameras w/ Variable ND – Fotodiox, Inc. USA
Canon R7 ND Filter Adapter | Meike RF to EF Adapter and ND Filter - YouTube
Meike Drop-in Filter Mount Adapter for PL Mount Cine Lens — Meike Global
NDT Fusion Auto Adapter - Canon EF Lens to L-Mount Cameras w/ Variable ND – Fotodiox, Inc. USA
KIPON Mark 3 Neutral Density Autofocus Lens EF-S/E AF ND MARK 3
Amazon.com : Canon Drop-in Filter Mount Adapter EF-EOS R with Variable ND Filter : Electronics
Cine ND Throttle - Arri PL Lens to Sony E Cameras w/ Variable ND Filter – Fotodiox, Inc. USA
NEEWER Magnetic Variable ND Filter with Adapter Ring - NEEWER – neewer.com