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Smoli4
Joined: 01 Jul 2011
Posts: 606
Location: Haifa, Israel
Expire: 2013-06-07
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 Posted: Tue Jan 10, 2012 7:24 am Post subject: Will Buy\Trade for an unusable lens |
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Smoli4 wrote:
Im interested in lens that features a severe Optical Cement problem, rough haze or seperation. |
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stingOM
Joined: 27 Sep 2007
Posts: 3168
Location: Ireland
Expire: 2012-12-27
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| Posted: Tue Jan 10, 2012 6:21 pm Post subject: |
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stingOM wrote:
Gee, are you into repairs are just looking for spare parts? |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Tue Jan 10, 2012 6:31 pm Post subject: |
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Attila wrote:
Dima will repair it he would like to try how he able to do it.
_________________
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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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Smoli4
Joined: 01 Jul 2011
Posts: 606
Location: Haifa, Israel
Expire: 2013-06-07
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| Posted: Tue Jan 10, 2012 7:03 pm Post subject: |
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Smoli4 wrote:
Yes i will repair a lens like that.
I have successfully treated a 50mm 1.7 pentax lens with that problem, i have got access to necessary equipment not long ago, and i would like to see more results and maybe this could be a vital treatment for lenses otherwise not usable. |
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inombrable
Joined: 20 Mar 2012
Posts: 545
Location: Salamanca, Mexico
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| Posted: Tue Apr 03, 2012 10:47 am Post subject: |
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inombrable wrote:
hi
Would you be interested in trading for this lens?
http://forum.mflenses.com/a-schacht-ulm-travegon-35mm-3-5-coating-problem-t48544.html
(ebay id- donisabel) |
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Smoli4
Joined: 01 Jul 2011
Posts: 606
Location: Haifa, Israel
Expire: 2013-06-07
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| Posted: Tue Apr 03, 2012 11:24 am Post subject: |
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Smoli4 wrote:
can you provide the optical scheme of this lens?
i need to see if there are glued elements in the rear group where you got this problem. |
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inombrable
Joined: 20 Mar 2012
Posts: 545
Location: Salamanca, Mexico
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| Posted: Tue Apr 03, 2012 10:41 pm Post subject: |
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inombrable wrote:
I dont have the optical scheme for the lens and can´t seem to find it online.
From Vade Mecum:
"Travegon f3.5 35mm 6-glass, This was one of the favourites of the set. It was seen in a
black and alloy mount at No226,51x for M42 and No139,24x for Exakta VX. Coded 'R'. It may be near Alpagon
in design"
In fact i believe the problem with the sharpness may be due to the cementing of the 2 glasses from the rear element and not the coating. I've looked through and it looks like "watery" or kind of like gel inbetween both glasses. |
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AlexWicks
Joined: 16 May 2012
Posts: 57
Location: Ipswich, UK
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| Posted: Fri May 18, 2012 8:08 pm Post subject: |
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AlexWicks wrote:
I have a Prakticar 200mm f3.5 that has a really bad haze, not even usable, needs repair. Other then that haze it seems pretty decent - I couldn't stop it down to test but at f3.5 its sharpness was decent. It has been falling apart for a while, and one day, the focusing part of the lens came off. It's a really unusual lens, my research brought up nothing other than the fact it was a re-branded Japanese lens that was sold by a distributor In London the name of which I cannot remember. It appears to be the front element because when I removed it the front element was hazy. So not only some bad glass to deal with but also a general repair job 
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Cameras: Sony a7s | EOS 400D | Praktica MTL3, LTL3, LLC | FED 5B
Lenses: Helios 44-2 & 44-3 | Indulstar 61 LZ | Pentacon 35mm f2.8 | Pentacon 28mm f2.8 | Minolta 28mm f2.8 |
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Smoli4
Joined: 01 Jul 2011
Posts: 606
Location: Haifa, Israel
Expire: 2013-06-07
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| Posted: Sun Jun 17, 2012 6:35 pm Post subject: |
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Smoli4 wrote:
wow sorry i havent seen your post! i've sent you a PM, if all goes well i'll post the results in the repairs forum.
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Canon 6D + Mir 24, SMC Tak 50 f1.4, 135 f2.5 V2, Tamron SP 90mm f2.5 52B, mcMTO 500 8, Canon IS USM 75-300 4.5-5.6, zeiss ikon talon 85 f2.8 |
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