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What the Nerds Do / Re: New-Nikkor 20mm f/4 Repair!!!
« Last post by Erik Lund on May 08, 2026, 10:17:04 »Some of these lenses has quite long threads for the focusing that can result in heavy feel or drag when focusing.
Use a thinner, lighter grease for such lenses, after completely removing the old grease.
Remember to use JIS type screwdrivers for those hard to remove screws. And heat first to weaken the screw locking often used by Nikon when assembling the lenses.
Use a thinner, lighter grease for such lenses, after completely removing the old grease.
Remember to use JIS type screwdrivers for those hard to remove screws. And heat first to weaken the screw locking often used by Nikon when assembling the lenses.

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