Stiff Inner Helicoil in Micro-NIKKOR 55mm 1:2.8 AI-s

Описание к видео Stiff Inner Helicoil in Micro-NIKKOR 55mm 1:2.8 AI-s

This old Micro-NIKKOR 55mm 1:2.8 AI-s had a very stiff focus, but it was only the inner focus system that need to be disassembled then clean the helicoil with Lighter Fluid and then add new lubrication, that is "TRI-FLOW".

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