Author Topic: Repair of the Nikkor 28mm f/2.8 Ai-S!  (Read 4081 times)

richardHaw

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Bent Hjarbo

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #1 on: February 04, 2018, 16:25:00 »
Nice writeup, thanks  :)

John Geerts

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #2 on: February 04, 2018, 17:23:59 »
Thanks for the article, Richard. 

Nice lens also for night shots.

October 2017 post:


Jacques Pochoy

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #3 on: February 04, 2018, 18:45:33 »
Nice article Richard !  I was getting a thrill in seing the inside of my 28mm F/2.8 lens... Happily mine hasn't got all that fungi (yet)!
“A photograph is a moral decision taken in one eighth of a second. ” ― Salman Rushdie, The Ground Beneath Her Feet.

pluton

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #4 on: February 04, 2018, 19:30:35 »
Thanks Richard, for a fascinating look inside an amazing lens design.  My copy has slight wobble from [I think] loose helicoid key(s);  maybe I'll see if I can tighten the keys. 
One problem I always have:  The slot-type grub screws.  None of my existing screwdriver tips fit them exactly, and if the tip doesn't exactly fit, the screw will likely be destroyed. 
Is there a specific set of slot-type screwdrivers that will fit these old Nikon grub screws without the screwdriver tips having to be re-shaped by filing?
Keith B., Santa Monica, CA, USA

Jack Dahlgren

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #5 on: February 04, 2018, 23:17:02 »
Thanks Richard, for a fascinating look inside an amazing lens design.  My copy has slight wobble from [I think] loose helicoid key(s);  maybe I'll see if I can tighten the keys. 
One problem I always have:  The slot-type grub screws.  None of my existing screwdriver tips fit them exactly, and if the tip doesn't exactly fit, the screw will likely be destroyed. 
Is there a specific set of slot-type screwdrivers that will fit these old Nikon grub screws without the screwdriver tips having to be re-shaped by filing?

Look for JIS (Japanese Industrial Standard) screwdrivers. This is most true for cross head screws, but should be helpful with slot head as well.

Øivind Tøien

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #6 on: February 05, 2018, 01:07:12 »

Thanks Richard, very nice and thorough write up!
Øivind Tøien

Chulster

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #7 on: August 28, 2023, 23:03:32 »
Hi Richard,

I've been unable to remove the front optical unit of this lens. I see the two slots for a lens spanner, but they exist in a space that is far too narrow for my spanner's tips. There is about 1–2mm of space to access these slots. Do you have any advice? Do I need to disassemble the CRC unit in order to be able to remove the front optical unit?

Erik Lund

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Re: Repair of the Nikkor 28mm f/2.8 Ai-S!
« Reply #8 on: August 29, 2023, 08:48:43 »
Buy smaller tips for your spanner or cut them down so they fit.
Erik Lund