Nikkor-H 50mm f2 non AI - Camera Lens Repair - & How Not To Polish Out A Scratch

In this video we've got a rather battered old Nikkor-H 50mm f2 non AI camera lens from around 1968.

The lens has a few issues that need fixing:
The filter thread has been damaged and badly repaired in the past so we'll fix that using a lens vice so filters can be attached again.
The focusing ring is not a silky as it should be because the grease in the focusing helicoid has partially dried out - we've got a simple fix for this that works most times.
The optics are a little hazy so we'll dismantle the lens and clean these.

Finally, there is some damage to the rear element where it has obviously been dropped at some time - we'll try to polish out these scratches and show why this isn't always a good idea - even with scratches, a lens can often work quite well and a DIY repair can potentially ruin the lens for good.

There will be a follow up video coming soon, once a new rear element has been fitted to the lens, and then we can test the lens properly.
You can see the follow up video here: https://youtu.be/cdscSWCKiRc

If you've enjoyed this video, and/or it's helped you with your own lens, and you feel so inclined as to leave a donation, you can leave a PayPal donation by following the PayPal.me link here: https://paypal.me/GrumpyTimYouTube?locale.x=en_GB

Intro music:
"As Yet Untitled"
by GrumpyTim (available to download from GrumpyTim's Bandcamp page)
https://grumpytim.bandcamp.com/

http://www.grumpytim.com

Видео Nikkor-H 50mm f2 non AI - Camera Lens Repair - & How Not To Polish Out A Scratch канала GrumpyTim