Micro-NIKKOR-P Auto 55mm --> Ai conversion

Started Aug 14, 2017 | Discussions thread
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Captain Hook
Captain Hook Senior Member • Posts: 2,151
Micro-NIKKOR-P Auto 55mm --> Ai conversion
6

I got my hands on this little gem; the Micro-NIKKOR-P Auto 1:3.5 f=55mm. Although it has a F-mount, you cannot use it on a e.g. D700 or D800. It would damage the aperture feeler of your body when you would try to mount it.

Some remarks about this lens can be found here:

https://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/6070nikkor/micro/index.htm

http://www.naturfotograf.com/lens_spec.html

The lens, before the surgery:

Although it's manufactured in 1970 (!), it looks and feels like brand new.

I used these instructions to operate on this little guy:

http://pindelski.org/Photography/2013/02/06/nikkor-ai-conversions-diy/

https://richardhaw.com/2016/01/21/diy-ai-conversion/

After some careful disassembly, determining the right position for the filing, the filing itself, some spray painting (mat black) the trimmed rim and assembly again, it looks like this:

As you can see, it's hardly noticeable.

I only used handtools for this DIY job.

Some metal files of different roughness, some fine sanding paper and some tiny screwdrivers + pliers to disassemble/assemble the mount/aperture ring. And a spray can of mat black metal paint.

Took me about 30 minutes to do everything very carefully and thought through, because there is no way back if I would file to much material away. And then some time for the paint to dry.

But it works! Mounts correctly on my ff body and the correct aperture settings are detected when rotating the aperture ring.

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