Author Topic: Nikkor 180mm f/2.8 ED Ai-S repair!!!  (Read 875 times)

richardHaw

  • Cute Panda from the East...
  • NG Member
  • *
  • Posts: 2342
  • Your lens loverboy
    • Classic Nikkor Maintenance and DIY
Nikkor 180mm f/2.8 ED Ai-S repair!!!
« on: July 01, 2018, 16:50:39 »
http://richardhaw.com/2018/07/01/repair-nikkor-180mm-f-2-8-ed-ai-s/

had to rush this to help somebody  :o :o :o I was too late but I hope this will help others

Bruno Schroder

  • NG Supporter
  • **
  • Posts: 1097
  • Near Waterloo, Belgium
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #1 on: July 09, 2018, 18:50:56 »
It will help me, I have one with a little bit of fungus. Thanks, Richard.
Bruno Schröder

richardHaw

  • Cute Panda from the East...
  • NG Member
  • *
  • Posts: 2342
  • Your lens loverboy
    • Classic Nikkor Maintenance and DIY
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #2 on: July 10, 2018, 02:17:45 »
It will help me, I have one with a little bit of fungus. Thanks, Richard.

be careful with the front element!  :o :o :o

Roland Vink

  • NG Member
  • *
  • Posts: 1099
  • Nikon Nerd from New Zealand
    • Nikon Database
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #3 on: July 17, 2018, 23:14:19 »
The front element is ED glass, which is softer than normal glass ...

richardHaw

  • Cute Panda from the East...
  • NG Member
  • *
  • Posts: 2342
  • Your lens loverboy
    • Classic Nikkor Maintenance and DIY
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #4 on: July 18, 2018, 02:25:41 »
The front element is ED glass, which is softer than normal glass ...

ED and soft used in the same sentence  :o :o :o

only mr Akira will understand this aside from me  ::)

Akira

  • Homo jezoensis
  • NG Supporter
  • **
  • Posts: 8719
  • Tokyo, Japan
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #5 on: July 18, 2018, 03:00:20 »
ED and soft used in the same sentence  :o :o :o

only mr Akira will understand this aside from me  ::)

Rick, I don't understand what you mean.   :o :o :o

But that's what I understand about  the ED glass.  If I remember correctly, 180/2.8 and 200/2.0 Ais lenses are the only Nikkors using ED glass as the front element without the fixed protection glass (flat or slightly concave).
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

richardHaw

  • Cute Panda from the East...
  • NG Member
  • *
  • Posts: 2342
  • Your lens loverboy
    • Classic Nikkor Maintenance and DIY
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #6 on: July 18, 2018, 03:09:51 »
ED is "機能不全"  :o :o :o

Akira

  • Homo jezoensis
  • NG Supporter
  • **
  • Posts: 8719
  • Tokyo, Japan
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #7 on: July 18, 2018, 03:17:15 »
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

Roland Vink

  • NG Member
  • *
  • Posts: 1099
  • Nikon Nerd from New Zealand
    • Nikon Database
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #8 on: July 18, 2018, 03:41:06 »
Most (all?) of the early ED lenses used ED glass on the front element, including the early ED telephotos for the AU-1 focus unit, and early AI and AIS ED telephotos. Nikon stated their ED glass was robust enough to be used on the front element, unlike the fluorite used by some competitors. However Nikon did recommend using large UV filters to protect the ED glass from damage.

In the mid 1980s Nikon upgraded a number of their earlier IF-ED telephotos, and among the changes, the front element was now protected by a permanent fixed front protection lens. Maybe due to feedback from professional, Nikon realised the ED glass was more vulnerable than first thought. Since then all big telephotos have had a front protection lens, or the ED glass was not used as the front element.

Akira

  • Homo jezoensis
  • NG Supporter
  • **
  • Posts: 8719
  • Tokyo, Japan
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #9 on: July 18, 2018, 03:44:42 »
Roland, thank you for the correction.  I forgot about all of these super-teles.   :o :o :o  It is insanely hot in Tokyo!
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

richardHaw

  • Cute Panda from the East...
  • NG Member
  • *
  • Posts: 2342
  • Your lens loverboy
    • Classic Nikkor Maintenance and DIY
Re: Nikkor 180mm f/2.8 ED Ai-S repair!!!
« Reply #10 on: July 18, 2018, 03:57:33 »
I remember working on a cracked front ED element before, it was a "Bruce Lee zoom"  :o :o :o