Nikon Lens Cleaning 28mm 1:3.5 Ai-s

In this video I clean an old Nikon lens.
00:00 Initial state
00:59 Disassembly
03:38 Cleaning rear elements
04:27 Cleaning front elements
05:41 Greasing helicoids
06:20 Reassemble
09:11 Final result

[@randallstewart1224]

The Nikkor 28mm 3.5 dates from the start of the F system, and has undergone several updates, last in the early 1970s. The original from around 1961 was quite unremarkable, even by the standards of its day. I bought the last optical version (pre-AI) around late 1976 in Japan. It proved to be a remarkably sharp, high contrast optic, yet it sells used for peanuts. One of the true bargains in the Nikkor line. If you shop for one of these late versions, one sure ID is if it is a true AI mount lens, (NIkon provided retrofit AI mount services for most of its lenses around 1977-79, so you have to check whether an AI lens like this 28mm is a real AI or an early version retrofitted.)

[@yorgic]

Thank you for comment. When I bought this lens it was listed as AI but I knew it was an AI-S because the aperture number "22" is orange in both rows.

[@LuminousAnima]

Thanks

[@DanielPerez-tu5rq]

Hi Yorgi, first of all I would like to thank you for the work you do on your videos, they are of great help to those of us who repair our photographic material at home.
I would like to ask you a question, I just received a Nikkor 28mm 3.5 AI and it cannot focus at infinity, the focus only reaches 4/5 meters.
Is the procedure to recalibrate the focus the same in AI and AIS?

[@yorgic]

They are pretty similar. The same 3 screws. You can watch my other video on the 28mm 2.8 Ai for guide.

[@danielwoo5499]

Very useful video.Can I know what kind of White Grease do you use on the video?Thank you .

[@yorgic]

It's grease for plastic gears

[@mohammadashrafkhokhar5678]

Hello.i have same lens,but the rear glass has shattered and I took it out,then the one under came out as well.which way do they fit

[@yorgic]

imaging.nikon.com/history/story/0012/index.htm