davidw
Joined: 06 Jan 2013 Posts: 5 Location: Australia
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Posted: Thu Feb 28, 2013 10:10 am Post subject: NIkon 50mm 1.4 Ai lens front name ring stuck |
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davidw wrote:
Hi
I been reading this forum for a while. I have a Nikon 50mm 1.4 AI manual lens. It has fungus inside the lens.
I need to take it apart and clean. from everything I read. I need to unscrew the front name ring,
But I have try rubber glove, duct tape. It seems to be stuck.
is there any other trick to get the name ring off and get access to the lens for dismantle and cleaning?
thanks in advance
David |
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Esox lucius
Joined: 26 Aug 2008 Posts: 2441 Location: Helsinki, Finland
Expire: 2011-11-18
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Posted: Thu Feb 28, 2013 9:21 pm Post subject: |
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Esox lucius wrote:
(edited)
You wont notice the screws you have to remove unless you have turned the focusing ring to minimum focusing distance, so that lens assembly is fully extended. Once you removed the tiny screws the name ring is unscrewed by turning it counter-clockwise. It's been a while since I lubed three dried out Nikkor 50mm lenses I bargain-hunted, but I recall it was easy to accomplish and I to the best of my knowledge they share very similar construction of barrel and helicoid.
If it is stuck it is usually because the barrel or filter ring is slightly dented from impact. Those metal Ai/Ai-S lenses can take impact damage and focusing helicoid still works, so user does not notice lens has damage.
You can also find lens-specific repair manuals on eBay for 5-10 dollars, if you need more specific help. I don't have how-to-do-it photos, sorry. _________________ Vilhelm
Nikon DSLR: D4, D800, Nikon D3, D70
Nikon SLR: Nikon F100, Nikon FM2n
Nikkor MF: 20/2.8 Ai-S, 24/2 Ai-S, 24/2.8 Ai-S, 28/2 Ai-S, 28/2.8 Ai-S, 35/1.4 AIS, 35/2 Ai-S, 45/2.8 GN, 50/1.2 Ai, 50/1.2 Ai-S, 50/1.4 Ai, 50/1.4 Ai-S, 50/1.8 AI-S "long", 50/1.8 AI-S "short", 55/1.2 Ai, 85/1.4 Ai-S, 85/1.8H, 105/2.5 Ai, 135/2.8Q, 135/3.5 Ai, 180/2.8 Ai-S ED
Nikkor AF/AF-S FX: 14-24/2.8G, 16/2.8D Fisheye, 16-35/4G VR, 17-35/2.8D, 24/1.4G, 24/3.5D PC-E, 24/2.8D, 24-70/2.8G, 28/1.4D, 28/1.8G, 35/1.4G, 35/2D, 50/1.4D, 50/1.4G, 50/1.8G, 60/2.8 Micro, 60/2.8G Micro, 70-200/2.8G VR, 70-200/2.8G VR II, 80-400/4.5-5.6D VR, 85/1.4G, 85/2.8D PC-E Micro, 105/2D DC, 105/2.8G VR Micro, 135/2D DC, 200/2G VR, 200-400/4G VR, 300/2.8G VR, 300/4D ED, 400/2.8G VR, 800/5.6E VR
Nikkor AF/AF-S DX: 10.5/2.8G Fisheye, 12-24/4G, 18-70/3.5-4.5G
Topcor: Auto-Topcor 58/1.4,
Voigtländer SL: 40/2 Ultron, 58/1.4 Nokton, 75/2.5 Color-Heliar, 90/3.5 APO-Lanthar, 125/2.5 APO-Lanthar, 180/4 APO-Lanthar
Zeiss ZF: Planar T* 85/1.4 ZF
M42 SLR: Voigtländer Bessaflex TM
M42: Flektogon 20/4, Flektogon 35/2.4, Tessar 50/2.8 T, Super-Takumar 55/1.8, Biotar 58/2 T, Pentacon 135/2.8, Sonnar 135/3.5
Medium format: several Zeiss Super Ikonta 532/16 Opton-Tessar 80mm f/2.8, Zeiss Ikonta 524/16 Opton-Tessar 75mm f/3.5
Leica: R7, M4, Super-Angulon-R 4/21, Elmarit-R 2.8/28, Summicron-R 2/35, Summicron-M 2/35, Summicron-M 2/50, Elmarit-R 2,8/180 |
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Esox lucius
Joined: 26 Aug 2008 Posts: 2441 Location: Helsinki, Finland
Expire: 2011-11-18
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Posted: Fri Mar 01, 2013 11:37 pm Post subject: |
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Esox lucius wrote:
davidw wrote: |
I think its time to buy a lens spanner. |
For someone disassembling (and assembling!) a lens, the only thing more indispensable than the lens-specific repair manual is indeed a lens spanner. |
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