Ulanzi G8-6 52mm Filter Adapter Ring for Gopro Hero 8 Black Action Spo – JG Superstore
Cine ND Throttle Adapter - Nikon F G-Type Lens to Sony Alpha E-Mount – Fotodiox, Inc. USA
Amazon.com : NEEWER EF to EOS R Mount Adapter with Drop in Variable ND Filter ND3-ND500, Autofocus Lens Converter Ring Compatible with Canon EF/EF-S Lens to EOS R EOS RP EOS R5