This is a Prototype of an Electronically-Controlled ND Filter Lens Adapter | PetaPixel
Meike releases $160 EF to EF-M adapter with drop-in variable neutral density filter: Digital Photography Review
Amazon.com : Meike MK-EFTM-C Drop-in Filter Auto-Focus Mount Lens Adapter Compatible with Canon EF/EF-S to EOS M Cameras with Variable ND Filter and UV Filter EOS M M2 M3 M5 M6 M10
ND Throttle Fusion Adapter - Canon EOS Lens to Canon RF Cameras – Fotodiox, Inc. USA
Meike MK-EFTR-C Drop-in Filter Mount Adapter EF to Canon EOS R RP R5 R — Meike Global
Nd2 Nd4 Nd8 Neutral Density Nd Filter & Adapter Ring Lens Cap Keeper For Sony Zv-1 Zv1 Rx100 Mark Vii Vi V Va Iv Iii Ii Camera - Camera Filters - AliExpress
Canon to Sony Auto Focus Adapter with Variable ND Filter! - YouTube
GepRC Naked Hero 8 ND Filter/Lens protector adapter – Camera Butter
Vizelex ND Throttle Lens Mount Adapter - Canon EOS EF (NOT EF-S) DSLR Lens to Canon RF Mount Mirrorless Camera Body with Built-In Variable ND Filter (1 to 8 Stops) – Fotodiox,
Meike Drop-In Filter Mount Adapter EF to EOS-R MK-EFTR-C B&H
Square Lens Filter Kit with Holder & Adapter Rings Best Seller 2021 - KENTFAITH
52mm Variable Nd Filter Nd2-400 Neutral Density Fader Adapter Ring For Gopro Hero 8 9 10 Hero8 Black Hero9 Hero10 Action Camera - Camera Filters - AliExpress
UURig Adapter Ring for Rapid ND Filter Mount (72-82mm) 1715 B&H
Amazon.com : K&F Concept 18 Pieces Filter Ring Adapter Set, Camera Lens Filter Metal Stepping Rings Kit (Includes 9pcs Step Up Ring Set + 9pcs Step Down Ring Set) Black : Electronics
IBC 2015: The Holy Grail of DSLR filmmaking- Genus show prototype lens adapter with built-in electronic ND filter - Newsshooter
Nd2 Nd4 Nd8 Neutral Density Nd Filter & Adapter Ring Lens Cap Keeper For Panasonic Lx10 Lx15 Tz200 Tz100 Tz220 Zs200 Tx2 Zs100 - Camera Filters - AliExpress
Universal Naked GoPro ND Filter/Lens protector adapter – Camera Butter
Camera Butter GepRC Naked Hero 8 ND Filter/Lens Protector Adapter – NewBeeDrone
Amazon.com : K&F Concept 18 Pieces Filter Ring Adapter Set, Camera Lens Filter Metal Stepping Rings Kit (Includes 9pcs Step Up Ring Set + 9pcs Step Down Ring Set) Black : Electronics
Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter
Kipon launches EF to Sony E adapters with built-in variable ND filter: Digital Photography Review
Cine ND Throttle - Arri PL Lens to Sony E Cameras w/ Variable ND Filter – Fotodiox, Inc. USA
Universal Naked GoPro ND Filter/Lens protector adapter – Camera Butter
PL Cine Lens Adapter with Built-in Variable ND Filter! - YouTube
