Author Topic: Disassembling the GN Auto-Nikkor 45mm f2.8!!!  (Read 5364 times)

richardHaw

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Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« on: March 13, 2016, 09:41:13 »
http://richardhaw.com/2016/03/13/repair-gn-auto-nikkor-45mm-f2-8/

OK! just posted this. I believe that this is the only information on the net regarding the maintenance of this lens. I hope that you enjoy this!  :o :o :o

Erik Lund

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #1 on: March 13, 2016, 09:53:28 »
Thanks Richard, a true dinosaur that lens,,, And what a funny simple and yet complex design - Strangely different, looks like some OEM design adopted by Nikon
Erik Lund

Akira

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #2 on: March 13, 2016, 10:06:43 »
Rick, I surely enjoyed your post just like other ones.  Thanks for sharing!
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

John Geerts

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #3 on: March 13, 2016, 10:23:27 »
Very interesting and informative, Richard.  Didn't know the Nikkor 45mm f/2.8 Ai-P was designed by Cosina, but it doesn't surprise me, it has some pleasant rendering characteristics like the Voigtlander 58/1.4 and 90/3.5

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #4 on: March 13, 2016, 15:31:37 »
Very interesting and informative, Richard.  Didn't know the Nikkor 45mm f/2.8 Ai-P was designed by Cosina, but it doesn't surprise me, it has some pleasant rendering characteristics like the Voigtlander 58/1.4 and 90/3.5
Yes, it was subcontracted to Cosina  :o :o :o
they are overpriced now. I am actually looking for one to play with.  ::) however, i am saving up for a NOCT  ::)

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #5 on: March 13, 2016, 15:33:23 »
Thanks Richard, a true dinosaur that lens,,, And what a funny simple and yet complex design - Strangely different, looks like some OEM design adopted by Nikon

yes. this is a very weird lens by Nikon standards  :o :o :o

along the weird lenses series, I am going to make a post of the 5.5cm f/3.5 micro  ::) which is unusual enough to be considered a weird Nikkor.

next would probably a PC-Nikkor  ::) politically correct nikkor  :P

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #6 on: March 13, 2016, 15:34:05 »
Rick, I surely enjoyed your post just like other ones.  Thanks for sharing!
Thank you, Akira! do you have any lenses that focuses really bad or is super dirty? lets clean it! :o :o :o

Bjørn Rørslett

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #7 on: March 13, 2016, 16:03:48 »
I found decoupling focusing and aperture control on my 45 GN to be necessary for the lens to be usable for ordinary shooting. Otherwise focusing is too awkward, slow,  and plagued with imprecision and play. I suspect the cam controlling the aperture wears quickly as well.

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #8 on: March 13, 2016, 16:30:33 »
I found decoupling focusing and aperture control on my 45 GN to be necessary for the lens to be usable for ordinary shooting. Otherwise focusing is too awkward, slow,  and plagued with imprecision and play. I suspect the cam controlling the aperture wears quickly as well.

yes it does, the pin wears quickly  :o :o :o

it is just a thin pin as you can see in the tear down. no surprise since it was one of the cheapest Nikkor that you can buy at the time

Jørgen Ramskov

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #9 on: March 14, 2016, 17:23:08 »
Thanks for another interesting post.
Jørgen Ramskov

Tristin

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #10 on: March 14, 2016, 19:51:00 »
You do a great service the lens nerds the world over Richard!
-Tristin

John Geerts

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #11 on: March 14, 2016, 20:21:56 »
Yes, it was subcontracted to Cosina  :o :o :o
they are overpriced now. I am actually looking for one to play with.  ::) however, i am saving up for a NOCT  ::)
If you compare it with the Voigtlander Ultron 40/2 they are not really overpriced, both around 350 USD or lower, I guess.

Akira

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #12 on: March 14, 2016, 20:27:36 »
Thank you, Akira! do you have any lenses that focuses really bad or is super dirty? lets clean it! :o :o :o

Rick, I have shied away from the lenses in that condition, no matter how cheaply they can be had except for the cases in which some of their parts are usable.
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #13 on: March 15, 2016, 15:00:02 »
Thanks for another interesting post.

Thanks! the next one should be interesting. the 75-150E by popular request  :o :o :o

richardHaw

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Re: Disassembling the GN Auto-Nikkor 45mm f2.8!!!
« Reply #14 on: March 15, 2016, 15:00:37 »
If you compare it with the Voigtlander Ultron 40/2 they are not really overpriced, both around 350 USD or lower, I guess.

well, yeah you got a point  :o :o :o