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Spag
Joined: 28 Oct 2008
Posts: 17
Location: Berlin
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 Posted: Tue Oct 28, 2008 10:29 pm Post subject: Is it fungus? |
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Spag wrote:
Hey guys,
Yesterday I received a super Tamron SP 70-210mm F/3.5 Model 19AH from eBay. The lens is really in a perfect state, or at least it seemed so at the first look.
But I fear the evil fungus spreaded inside... Youn can't see it unless you inspect the lense, as you can only see it from a particular angle, and I don't see anything on my test pictures Id did with this lens... but this still looks worrying:
(click on the picture to see it in real size)
What do you guys think? 
Thanks for your advice!
_________________
Pentax K100D Super, Pentax K1000
Asahi Pentax: Super-Takumar 4/150 Carl Zeiss Jena: Flektogon 2.4/35, Tessar 2.8/50 Pentacon: 2.8/135 Pentax: smc FA 35mm F2 AL, smc FA 50mm F1.4, smc M 1.7/50, smc DA 55-300 mm F4-5.8 ED Sigma: 10-20mm F4-5.6 EX DC, 17-70mm F2.8-4.5 DC MACRO, 70-300mm f/4-5.6 APO Tamron: SP 70-210mm F/3.5 Model 19AH, SP 90mm F/2.5 Macro Model 52B, SP 2X Tele-Converter Model 01F Vivitar: Series 1 70-210 Kiron, Series 1 70-210 Tokina Zenitar: 2.8/16
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Spag
Joined: 28 Oct 2008
Posts: 17
Location: Berlin
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| Posted: Wed Oct 29, 2008 12:22 am Post subject: |
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Spag wrote:
Oh after playing a bit with the lighting, I managed to get a better shot... Should I throw my Tamron through the window?
(full size = 1.9MB)
_________________
Pentax K100D Super, Pentax K1000
Asahi Pentax: Super-Takumar 4/150 Carl Zeiss Jena: Flektogon 2.4/35, Tessar 2.8/50 Pentacon: 2.8/135 Pentax: smc FA 35mm F2 AL, smc FA 50mm F1.4, smc M 1.7/50, smc DA 55-300 mm F4-5.8 ED Sigma: 10-20mm F4-5.6 EX DC, 17-70mm F2.8-4.5 DC MACRO, 70-300mm f/4-5.6 APO Tamron: SP 70-210mm F/3.5 Model 19AH, SP 90mm F/2.5 Macro Model 52B, SP 2X Tele-Converter Model 01F Vivitar: Series 1 70-210 Kiron, Series 1 70-210 Tokina Zenitar: 2.8/16
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Attila
Joined: 24 Feb 2007
Posts: 57850
Location: Hungary
Expire: 2025-11-18
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| Posted: Wed Oct 29, 2008 12:27 am Post subject: |
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Attila wrote:
I never seen this type of fungus, it looks to me this lens went to a dirty lake or river and left this after lens was dried out. To clean a zoom lens not easy this is cover too much from lenses. I think it will be softer than a genuine one.
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Orio
Joined: 24 Feb 2007
Posts: 29545
Location: West Emilia
Expire: 2012-12-04
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| Posted: Wed Oct 29, 2008 1:07 am Post subject: |
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Orio wrote:
Looks more like dirt than like fungus.
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Himself
Joined: 01 Mar 2007
Posts: 3216
Location: Montreal
Expire: 2013-05-30
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| Posted: Wed Oct 29, 2008 1:27 am Post subject: |
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Himself wrote:
Yep, Atilla is right.
Muddy waters that lens has been through 
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Sevo
Joined: 22 Aug 2008
Posts: 1189
Location: Frankfurt, Germany
Expire: 2012-12-03
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| Posted: Wed Oct 29, 2008 9:41 am Post subject: |
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Sevo wrote:
Or cement separation - check whether it is on a lens-to-air or on a cemented surface. I've encountered similar bubbly spots inside cemented lens pairs of a couple of nineties vintage Tamron lenses.
They (as well as other manufacturers) probably were a bit too daring with their choice of glass types used in cemented pairs at that time - if their thermal expansion is too different, the strain will wear out the cement. |
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estudleon
Joined: 15 May 2008
Posts: 3754
Location: Argentina
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| Posted: Wed Oct 29, 2008 12:47 pm Post subject: |
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estudleon wrote:
Element surface bad cleaned. Lens opened to repair or clean, humidity or bad cleaned surface. With a good job, the element will be clean again.
Don't seem to me cement problems because the "draw" of the imperfection is different and the reflexion's glass is different too.
Fungus, not for me. The "spiders" don't present.
Good luck. Rino.
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CZJ: 4/20, 2,4/35, 1,8/50 aus jena, 3,5/135MC, Pentacon 1,8/50
Pentax S-M-C-1,4/50
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Etc.
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Yashica Minister III
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Spag
Joined: 28 Oct 2008
Posts: 17
Location: Berlin
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| Posted: Wed Oct 29, 2008 1:15 pm Post subject: |
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Spag wrote:
Thank you all for your answers. I guess I'll bring the lens to my local development shop, they sell a lot of old lenses and cameras so they must be able to do some servicing... We'll see what they say about this one.
If they can't do anything I'll contact the eBay seller, he only had positive feedback so far... and the ad stated "lens in very good condition".
I'll let you know how it goes. 
_________________
Pentax K100D Super, Pentax K1000
Asahi Pentax: Super-Takumar 4/150 Carl Zeiss Jena: Flektogon 2.4/35, Tessar 2.8/50 Pentacon: 2.8/135 Pentax: smc FA 35mm F2 AL, smc FA 50mm F1.4, smc M 1.7/50, smc DA 55-300 mm F4-5.8 ED Sigma: 10-20mm F4-5.6 EX DC, 17-70mm F2.8-4.5 DC MACRO, 70-300mm f/4-5.6 APO Tamron: SP 70-210mm F/3.5 Model 19AH, SP 90mm F/2.5 Macro Model 52B, SP 2X Tele-Converter Model 01F Vivitar: Series 1 70-210 Kiron, Series 1 70-210 Tokina Zenitar: 2.8/16
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Attila
Joined: 24 Feb 2007
Posts: 57850
Location: Hungary
Expire: 2025-11-18
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| Posted: Wed Oct 29, 2008 2:04 pm Post subject: |
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Attila wrote:
Share with us who sell this one as "very good condition" please!
_________________
-------------------------------
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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Sevo
Joined: 22 Aug 2008
Posts: 1189
Location: Frankfurt, Germany
Expire: 2012-12-03
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| Posted: Wed Oct 29, 2008 2:59 pm Post subject: |
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Sevo wrote:
| estudleon wrote: |
| Element surface bad cleaned. Lens opened to repair or clean, humidity or bad cleaned surface. With a good job, the element will be clean again. |
Yeah, the blots and shape certainly look like cleaner remains.
| estudleon wrote: |
Don't seem to me cement problems because the "draw" of the imperfection is different |
YMMV - as I said, I've seen Tamron lenses de-cement themselves in a similar pattern. Which seems to happen in spots along traces of cleaner or cement primer - or whatever liquid they let dry on the lens surface.
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Spag
Joined: 28 Oct 2008
Posts: 17
Location: Berlin
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| Posted: Fri Oct 31, 2008 10:35 am Post subject: |
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Spag wrote:
Well I've contacted the seller who excused himself for not having noticed this and he accepts to give me a refund. We'll see how it goes.
Thanks for your advices guys!
_________________
Pentax K100D Super, Pentax K1000
Asahi Pentax: Super-Takumar 4/150 Carl Zeiss Jena: Flektogon 2.4/35, Tessar 2.8/50 Pentacon: 2.8/135 Pentax: smc FA 35mm F2 AL, smc FA 50mm F1.4, smc M 1.7/50, smc DA 55-300 mm F4-5.8 ED Sigma: 10-20mm F4-5.6 EX DC, 17-70mm F2.8-4.5 DC MACRO, 70-300mm f/4-5.6 APO Tamron: SP 70-210mm F/3.5 Model 19AH, SP 90mm F/2.5 Macro Model 52B, SP 2X Tele-Converter Model 01F Vivitar: Series 1 70-210 Kiron, Series 1 70-210 Tokina Zenitar: 2.8/16
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Spag
Joined: 28 Oct 2008
Posts: 17
Location: Berlin
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| Posted: Thu Nov 06, 2008 2:44 pm Post subject: |
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Spag wrote:
So, happy ending!
I got a full refund for this lens, and I found another one for 10$ less. And this one is clean! ^^
Thanks for your help guys, can't wait to get out with my new toy!
_________________
Pentax K100D Super, Pentax K1000
Asahi Pentax: Super-Takumar 4/150 Carl Zeiss Jena: Flektogon 2.4/35, Tessar 2.8/50 Pentacon: 2.8/135 Pentax: smc FA 35mm F2 AL, smc FA 50mm F1.4, smc M 1.7/50, smc DA 55-300 mm F4-5.8 ED Sigma: 10-20mm F4-5.6 EX DC, 17-70mm F2.8-4.5 DC MACRO, 70-300mm f/4-5.6 APO Tamron: SP 70-210mm F/3.5 Model 19AH, SP 90mm F/2.5 Macro Model 52B, SP 2X Tele-Converter Model 01F Vivitar: Series 1 70-210 Kiron, Series 1 70-210 Tokina Zenitar: 2.8/16
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