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lokismiles
Joined: 07 Jun 2008
Posts: 5
Location: USA
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 Posted: Wed Jul 09, 2008 11:16 pm Post subject: Is this fungus? |
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lokismiles wrote:
Folks, i need some opinion. Do you think this is fungus?
All glass elements are clean. Marks/spots only found on the front rim 
 [/img] |
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Orio
Joined: 24 Feb 2007
Posts: 29658
Location: West Emilia
Expire: 2012-12-04
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| Posted: Wed Jul 09, 2008 11:17 pm Post subject: |
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Orio wrote:
looks more like glue to me.
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Attila
Joined: 24 Feb 2007
Posts: 57939
Location: Hungary
Expire: 2021-11-18
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| Posted: Wed Jul 09, 2008 11:20 pm Post subject: |
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Attila wrote:
Perhaps it was cleaned from fungus or/and lens elements replaced.
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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F16SUNSHINE
Joined: 20 Aug 2007
Posts: 5496
Location: Left Coast
Expire: 2011-11-18
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| Posted: Wed Jul 09, 2008 11:30 pm Post subject: |
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F16SUNSHINE wrote:
Hi
This is common with some Nikon lenses as well as others. What you are seeing is the paint lifting off the glass at the edge. Nikon paints the edge of the some elements on some lenses that do not have a big lip to cover them. This paint will often bubble off the glass but have no way of actually pealing off. This is the effect you see. There is no real cause for concern. If you google this condition you may find many other folks who have had the same problem and confused it with fungus. For now you look safe as this will not effect your images in any way.
The best way to avoid this is to buy Contax lenses 
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Attila
Joined: 24 Feb 2007
Posts: 57939
Location: Hungary
Expire: 2021-11-18
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| Posted: Wed Jul 09, 2008 11:36 pm Post subject: |
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Attila wrote:
Don't increase Contax lens prices please !  I am beginning of purchase 
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Fotal
Joined: 02 Mar 2008
Posts: 282
Location: Sweden
Expire: 2013-08-21
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| Posted: Thu Jul 10, 2008 5:52 am Post subject: |
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Fotal wrote:
| Attila wrote: |
| Don't increase Contax lens prices please ! I am beginning of purchase |
haha, yeah you are right Attila!
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Mr Scott please restrain your leaps of illogic. I have said nothing. I was merely speculating. |
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Abbazz
Joined: 23 Jun 2007
Posts: 1098
Location: Jakarta
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| Posted: Thu Jul 10, 2008 11:22 am Post subject: Re: Is this fungus? |
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Abbazz wrote:
| lokismiles wrote: |
| Folks, i need some opinion. Do you think this is fungus? |
As stated by others, it doesn't look like fungal infection. I would say it's a kind of Schneideritis -- a benign disease that affects many large format Schneider lenses, hence the name. Just google "scchneideritis", you will get plenty of info.
Cheers!
Abbazz
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peterqd
Joined: 28 Feb 2007
Posts: 8068
Location: near High Wycombe, UK
Expire: 2014-01-04
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| Posted: Thu Jul 10, 2008 1:02 pm Post subject: |
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peterqd wrote:
I go along with lifting paint too, but it looks from the pics as though it's on the metal rim, not on the glass. (Hope I'm seeing it right!). I think it's caused by corrosion of the aluminium causing white powdery oxide under the paint.
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Richard_D
Joined: 21 Oct 2007
Posts: 2378
Location: Faversham Kent UK
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| Posted: Thu Jul 10, 2008 3:42 pm Post subject: |
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Richard_D wrote:
If anyone's got any Nikkors suffering friom this dangerous disease I'll look after them for you
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Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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maddog10
Joined: 08 Apr 2008
Posts: 1072
Location: Maryland, USA
Expire: 2015-02-12
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| Posted: Thu Jul 10, 2008 10:23 pm Post subject: |
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maddog10 wrote:
It could be a form of electrolysis, where two or more dissimilar metals are in contact. There could be some type of metal in the paint and it reacts with the metal of the body. Just a thought, we see it where steel and copper pipes come in contact with each other.
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Michael Hill |
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naplam
Joined: 22 Mar 2007
Posts: 469
Location: Spain
Expire: 2013-11-30
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| Posted: Thu Jul 10, 2008 11:05 pm Post subject: |
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naplam wrote:
| maddog10 wrote: |
| It could be a form of electrolysis, where two or more dissimilar metals are in contact. There could be some type of metal in the paint and it reacts with the metal of the body. Just a thought, we see it where steel and copper pipes come in contact with each other. |
That's called bimetallic (or galvanic) corrosion, but I think this lens just has some glue deteriorating, like someone said earlier. |
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lokismiles
Joined: 07 Jun 2008
Posts: 5
Location: USA
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| Posted: Sat Jul 12, 2008 2:30 am Post subject: |
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lokismiles wrote:
Thanks for the responses everyone.
Hope this is not the start of lens separation  |
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Richard_D
Joined: 21 Oct 2007
Posts: 2378
Location: Faversham Kent UK
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| Posted: Sat Jul 12, 2008 10:30 am Post subject: |
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Richard_D wrote:
| lokismiles wrote: |
Thanks for the responses everyone.
Hope this is not the start of lens separation |
I don't think so.
_________________
Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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JoeCool
Joined: 08 Jun 2008
Posts: 134
Location: Kassel/Germany
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| Posted: Sat Jul 12, 2008 9:48 pm Post subject: |
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JoeCool wrote:
| Attila wrote: |
| Don't increase Contax lens prices please ! I am beginning of purchase |
There is no reason to be concerned about increasing Contax lens prices. They are already high.... 
Gerd |
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Attila
Joined: 24 Feb 2007
Posts: 57939
Location: Hungary
Expire: 2021-11-18
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| Posted: Sat Jul 12, 2008 10:00 pm Post subject: |
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Attila wrote:
No, no ! If compare quality and price ratio and compare with AF lenses, they are not high at all. Just here you can buy a Carl Zeiss 85mm f2.8 Contax lens for 200 EUR! What you can buy for 200 EUR what kind of AF lens ?
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-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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bob955i
Joined: 15 Apr 2007
Posts: 2495
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| Posted: Sat Jul 12, 2008 10:25 pm Post subject: |
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bob955i wrote:
| JoeCool wrote: |
| Attila wrote: |
| Don't increase Contax lens prices please ! I am beginning of purchase |
There is no reason to be concerned about increasing Contax lens prices. They are already high....
Gerd |
I got a Planar 1.4/50 from a shop for £80 GBP and the same shop also had a Planar 1.7/50 for £40 GBP.
Not expensive for what you get in IQ and I wouldn't get the nearest equivalent Canon EF50/1.2L for 80 quid....  |
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poilu
Joined: 26 Aug 2007
Posts: 10576
Location: Greece
Expire: 2019-08-29
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| Posted: Sat Jul 12, 2008 10:56 pm Post subject: |
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poilu wrote:
| Bob wrote: |
| I got a Planar 1.4/50 from a shop for £80 GBP and the same shop also had a Planar 1.7/50 for £40 GBP |
ffordes.com have E+ planar 50:1.7 from £35 GBP (45 euros)
maybe in 3 years the best 50mm will cost £10 and will still be considered expensive luxury 
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bob955i
Joined: 15 Apr 2007
Posts: 2495
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| Posted: Sat Jul 12, 2008 11:05 pm Post subject: |
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bob955i wrote:
| poilu wrote: |
| Bob wrote: |
| I got a Planar 1.4/50 from a shop for £80 GBP and the same shop also had a Planar 1.7/50 for £40 GBP |
ffordes.com have E+ planar 50:1.7 from £35 GBP (45 euros)
maybe in 3 years the best 50mm will cost £10 and will still be considered expensive luxury |
Yes, I saw that one - it's ironic that at the moment you can get a Zeiss Oberkochen Planar 50 cheaper than a Zeiss Jena Pancolar 50.  |
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Attila
Joined: 24 Feb 2007
Posts: 57939
Location: Hungary
Expire: 2021-11-18
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| Posted: Sat Jul 12, 2008 11:10 pm Post subject: |
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Attila wrote:
Historical justice for Carl Zeiss Jena
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-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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bob955i
Joined: 15 Apr 2007
Posts: 2495
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| Posted: Sun Jul 13, 2008 9:02 am Post subject: |
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bob955i wrote:
You may have a point there... |
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JoeCool
Joined: 08 Jun 2008
Posts: 134
Location: Kassel/Germany
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| Posted: Sun Jul 13, 2008 11:18 am Post subject: |
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JoeCool wrote:
The 50 mm Planar is good to have. they are real bargains. Same is perhaps the 135mm sonnar, but for the Distagons you can spend a lot....or take the 85 mm planar....
At eXXy in Germany the most Contax glass goes with fixed prices, no more bidding. And these prices are at the upper limit of the range. The sellers know what they have. That was at least my impression in the last weeks. OK compared to new glass from CaNikOlyPent, that could still be affordable, but not for me.
have fun
Gerd |
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