Yoshizen's Blog

Stacked Lock Pin

Locking pin(1)-SZ lens

When I took those photos, I’ve used additional close-up rings on the SZ lens.

Locking pin(2)-5-002

Close-up rings I mentioned were those kind. (Though, this photo left was when I blogged about the lens from an Instamatic camera)  The Nikon mount SZ lens was attached by “Ai to EOS” adapter.   But the adapter stacked on the EOS Close-up ring.  So, I needed to hammer down the Lock pin to release the Ai adapter from the Close-up ring. (Photo right)  In fact I was lucky as I could access the pin —– if an EOS lens was stacked, (so, the pin was hidden inside) I needed to use a hacksaw to cut open the ring ( = the saw-dust might got inside of EOS lens and creates even further trouble etc etc.) 

Locking pin(3)-5

What I found was, the lock pin was too long ! = It protruded from the ring, hence, even the release-lever was pressed down, pin was still blocking the Ai adapter to rotate.(Photo left)    The pin needed to cut and make it short.  And to do this, both side and other side of the ring was covered by the masking tape first, to prevent an accidental touch of a file to make scratch. (Photo middle)  Then file-down the pin (Photo right), till the pin never protrude from the ring surface when it was pressed down. (check it like photo left again and again).

Close-up ring like this (not necessary red color = blue, gold etc all very colorful) was sold in Ebay a lots, mostly about £25 for set of 3 though, I found this for £15 = may be it was “the rejected seconds” rejected from other bender = somebody throw it away = then, others picked up for opportunity (= any business is the busyness in China = remember, they made a cooking oil from the sewer remain !)  Still I’m buying a lots of staffs (adapter ring kind) from  China/Ebay —– while keeping eyes on its work (I’m not asking them to be a perfect, but at least it wouldn’t harm others ! —– since, I’m a very generous Zen Buddhist.   Ha ha ha   😀  ) 

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