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VictoriaMac
Joined: 22 Apr 2016 Posts: 17 Location: Scotland
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Posted: Fri Apr 22, 2016 1:16 pm Post subject: Help! Sickly Prominent Nokton 50mm f1.5 |
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VictoriaMac wrote:
Hi! This is my first post. I just ordered a Nokton (from prominent) 50mm 1.5 lens and it's in quite a bad way, but I'm not sure what (if anything much I could do for it). I'd really like to fix it the best I can before I buy an expensive adapter, and although there are aspects that I won't be able to fix I'm sure, I'd like to try to rescue it as much as possible. I have taken some photos of the damage. The aperture blades are just fine, but there's appears to be major loss of coating to the inner elements. The only front glass damage are lots of light scratches. As you can see from the photos of the front, it looks almost like the glass has been chipped around the outside, but it's actually inside I think. The black specks are also inside. Can anyone tell me if that loss of coatings and is it something that can be improved by sending to an expert repairer? The coating seems to be dodgy at the rear end too, as you can see there is a strange eroded look around the edges. I'd really appreciate your advice, or even just some clues about what has happened? It was well looked after and someone glued at filter adapter on it 😡
Thanks in advance
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calvin83
Joined: 12 Apr 2009 Posts: 7547 Location: Hong Kong
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Posted: Fri Apr 22, 2016 1:30 pm Post subject: Re: Help! Sickly Prominent Nokton 50mm f1.5 |
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calvin83 wrote:
VictoriaMac wrote: |
Hi! This is my first post. I just ordered a Nokton (from prominent) 50mm 1.5 lens and it's in quite a bad way, but I'm not sure what (if anything much I could do for it). I'd really like to fix it the best I can before I buy an expensive adapter, and although there are aspects that I won't be able to fix I'm sure, I'd like to try to rescue it as much as possible. I have taken some photos of the damage. The aperture blades are just fine, but there's appears to be major loss of coating to the inner elements. The only front glass damage are lots of light scratches. As you can see from the photos of the front, it looks almost like the glass has been chipped around the outside, but it's actually inside I think. The black specks are also inside. Can anyone tell me if that loss of coatings and is it something that can be improved by sending to an expert repairer? The coating seems to be dodgy at the rear end too, as you can see there is a strange eroded look around the edges. I'd really appreciate your advice, or even just some clues about what has happened? It was well looked after and someone glued at filter adapter on it 😡
Thanks in advance
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Someone already tried to fix it. It suffered from fungus infection and element separation. Ask for refund or return if possible unless it is really cheap. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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VictoriaMac
Joined: 22 Apr 2016 Posts: 17 Location: Scotland
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Posted: Fri Apr 22, 2016 1:55 pm Post subject: |
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VictoriaMac wrote:
Oh that's disappointing 😭😭😭 |
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VictoriaMac
Joined: 22 Apr 2016 Posts: 17 Location: Scotland
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Posted: Fri Apr 22, 2016 4:36 pm Post subject: |
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VictoriaMac wrote:
I might try the oiling method for the separation. Some people say it works well,mans I've nothing to lose as I didn't pay much for the lens |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Sat Apr 23, 2016 5:17 am Post subject: |
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visualopsins wrote:
Welcome VictoriaMac
You know you can hold lens in front of camera as adapter would to look at results -- or look for less expensive adapter -- not sure why any adapter should be so expensive, but I don't know your camera or lens mount, if either of those are exotic, adapters, if possible, can get expensive.
50mm are typical easy to disassemble & clean. I would go for cleaning the glass surfaces & try the lens first... _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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VictoriaMac
Joined: 22 Apr 2016 Posts: 17 Location: Scotland
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Posted: Sat Apr 23, 2016 12:17 pm Post subject: |
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VictoriaMac wrote:
visualopsins wrote: |
Welcome VictoriaMac
You know you can hold lens in front of camera as adapter would to look at results -- or look for less expensive adapter -- not sure why any adapter should be so expensive, but I don't know your camera or lens mount, if either of those are exotic, adapters, if possible, can get expensive.
50mm are typical easy to disassemble & clean. I would go for cleaning the glass surfaces & try the lens first... |
Thanks very much for your advice. I have the original voigtlander prominent body that came with the lens but I'm not sure how to use it, but it can't be that complicated, so I was thinking to go into town today to buy a film and try taking some photos then getting them developed. Holding the lens to my camera (Olympus em10) doesn't work. I have ordered one of those front lens opening tools so I can access the front lens to attempt recementing the separated elements. The rear elements are also separated but I don't think I can remove them from the housing. *sigh*
Yeah it's silly that mount adapters are so expensive but I don't think there is much of a market for converting such rare RF mount lenses. |
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bghomofaber
Joined: 03 Mar 2016 Posts: 154
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Posted: Tue May 03, 2016 8:32 pm Post subject: |
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bghomofaber wrote:
This service in Taiwan does a re-cementing, re coating and scratch removing service. Useful also for fungus.
http://www.ebay.it/itm/291268434885?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
I would use this service or leave the lens alone. |
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