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Amazon.com : NEEWER Lens Mount Adapter Manual Focus Ring Compatible with Leica M Mount Lens to Sony E Mount Camera, Compatible with Sony A1 A9 A7 A7C A7R A7S A6600 A6400 A5000
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Amazon.com : Movo FR3 Adjustable Follow Focus Ring Set of 3 with 65mm, 75mm and 85mm Lens Gear Rings (Standard 32 Pitch - 0.8 mod) : Electronics
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Perfect fitting Follow Focus Gear for NIKON 85MM F1.8 PRE AI (TYPE K) (W RUBBER FOCUS RING) lens
Follow focus gear ring 0.8 mod universal for Canon Nikon Zeiss 80-90mm black | eBay
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LENS FOCUS GEAR RING
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Follow Focus Gear Ring | CINE-PRO Seamless Metal Focus Gear for Canon FD 50mm F1.4 S.S.C. – CinemodMaster
