Disassembling the GN Auto-Nikkor 45mm f2.8!!!

[richardHaw]

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! 

[Erik Lund]

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

[Akira]

Rick, I surely enjoyed your post just like other ones.  Thanks for sharing!

[John Geerts]

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]

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 
they are overpriced now. I am actually looking for one to play with.  however, i am saving up for a NOCT 

[richardHaw]

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 

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 

[richardHaw]

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!

[Bjørn Rørslett]

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]

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 

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]

Thanks for another interesting post.

[Tristin]

You do a great service the lens nerds the world over Richard!

[John Geerts]

Yes, it was subcontracted to Cosina 
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]

Thank you, Akira! do you have any lenses that focuses really bad or is super dirty? lets clean it!

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.

[richardHaw]

Thanks for another interesting post.

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

[richardHaw]

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