How to Clean a Nikon Series E 50mm Lens (Sticky or Oily Aperture Blades)
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Cleaning lens elements in Nikon serie E 50mm 1:1.8 with Hydrogenperoxid and cleaning solvent's
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Measuring when re-grease Nikon lens series E 50mm 1:1.8
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Nikon Nikkor 50mm f/1.4 Pre-Ai : Oily Aperture Blades
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How to NOT cleaning the oily aperture assembly in a lens
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Features, controls and how to use the Nikon EM
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How to Fix a Vintage Lens Stuck Aperture
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Sticky aperture blades in Ai-s Micro-Nikkor 55mm 1:2.8 UPDATE 2021
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