Vintage Nikkors

[MEPER]

Yes, I noticed when looking at Richard Haw's repair of 48/2.8 that it as a focusing cam and not a helicoid. This explains the feel of the focus which is very different from the 45/2.8 P.
https://richardhaw.com/2016/03/13/repair-gn-auto-nikkor-45mm-f2-8/
Lens seems nice for taking pictures. One day I will try it.