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Meike MK-EFTR-C VND Drop-in Filter Auto-Focus Mount Lens Adapter for Canon EF to EOSR with Variable ND Filter and UV Filter for EOS R R5 R6 RP R7 R10 C70 Cameras :
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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 EOS R6
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Vizelex CINE ND Throttle Lens Adapter Compatible with Canon FD Lenses to Canon RF-Mount Cameras - Built-in Variable ND Filter (2-8 Stops) : Amazon.ca: Electronics
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