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Amazon.com : Wooden Camera Zip Focus, Single Rod 15mm Lightweight Follow Focus with 1:1 Gear Ratio.8 Mod Cine Lens Gear and Friction Gear, Fits All Lenses (15mm LW) : Electronics
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Amazon.com : NEEWER Mini Follow Focus with A/B Stops, Lens Gear Ring, 15mm Rod & Rod Clamp for Cinema Camera, DSLR/Mirrorless Camera, Compatible with Lens Diameter Up to 114mm, PG001 (Silver) :
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