Canon nFD 28mm f2 Gritty Focus Ring & Stiff Aperture Ring. Easy to clean/fix? : r/AnalogRepair
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Nikon 55mm f/3.5 Micro-NIKKOR AI Manual Focus Lens {52} at KEH Camera
How to fix stiff focus ring on MF lens? : r/AskPhotography
Stiff focusing ring on a Biotar 58/2...? No problem!!!
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Very Stiff focus ring In Ai-s Nikkor 85mm 1:1.4 - YouTube
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How to fix stiff focus ring on MF lens? : r/AskPhotography
Buying a Used Lens: Inspection and Testing Guide for Photographers • Points in Focus Photography
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Stiff focusing ring on a Biotar 58/2...? No problem!!!
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