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goombles
Joined: 08 Apr 2010
Posts: 136
Location: UK
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 Posted: Sat Apr 17, 2010 2:04 pm Post subject: Anyone know what this is? (Elements glued in)? |
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goombles wrote:
After discovering MF lenses I recently purchased a pentacon 135 2.8 preset but unfortunately im still waiting for an adapter in the post. Cosmetically the body is fine and I can't see any fungus/scratches etc.
When I first took off the front lens cap I was surprised to see that each element was attached to the barrel with a gold/yellow substance that looks like glue. I have never seen anything like it before (normally buy new) and it looks like the lens has been 'bodged' by a previous owner. I took some quick pictures with a Canon Powershot which you can see below.
I apologise for the quality but you get the idea 
As some of you have a considerable amount of experience with old/second-hand lenses I was wondering if you would like to share your opinion on the matter. It looks like someone has gone in there and really messed around with things and I wouldn't be surprised if an element was misalligned. When I first inspected the glass I noticed a finger print and smearing/cleaning marks which tell me the previous owner must be quite careless. |
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Tue Apr 20, 2010 6:58 am Post subject: |
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luisalegria wrote:
I can't open a larger view open of this, so I can't see what you describe.
I don't think even Pentacon was gluing their lenses in place. If they really are glued in it could well have been the work of a previous owner.
At one time these lenses were being given away, so it was no big deal to mess with them.
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I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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Gonzoo
Joined: 29 Mar 2010
Posts: 231
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| Posted: Tue Apr 20, 2010 11:08 am Post subject: Re: Anyone know what this is? (Elements glued in)? |
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Gonzoo wrote:
I've got exactly the same phenomena on my Pentacon 135mm MC. The lens itself looks like new, no signs of "messed up" by previous owner. So propably its glue.
| goombles wrote: |
When I first took off the front lens cap I was surprised to see that each element was attached to the barrel with a gold/yellow substance that looks like glue. I have never seen anything like it before (normally buy new) and it looks like the lens has been 'bodged' by a previous owner. I took some quick pictures with a Canon Powershot which you can see below. |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Tue Apr 20, 2010 11:12 am Post subject: Re: Anyone know what this is? (Elements glued in)? |
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Spotmatic wrote:
| Gonzoo wrote: |
I've got exactly the same phenomena on my Pentacon 135mm MC. The lens itself looks like new, no signs of "messed up" by previous owner. So propably its glue.
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Yup, I have the same. So it seems to be normal.
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Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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xjjohnno
Joined: 07 Apr 2009
Posts: 1270
Location: Melbourne Australia
Expire: 2011-11-18
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| Posted: Tue Apr 20, 2010 11:20 am Post subject: |
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xjjohnno wrote:
I'll confirm regarding the glue, highly unlikely we all had our lenses messed with by that same seller. |
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edz
Joined: 20 Aug 2009
Posts: 82
Location: UK
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| Posted: Wed Apr 21, 2010 11:44 am Post subject: |
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edz wrote:
My copy looks the same too. |
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francotirador
Joined: 17 Sep 2009
Posts: 894
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| Posted: Sat Apr 24, 2010 11:54 pm Post subject: |
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francotirador wrote:
The Pentacon is well. It is normal for this lens.
 Greetings
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visualopsins
Joined: 05 Mar 2009
Posts: 10531
Location: California
Expire: 2025-04-11
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| Posted: Sun Apr 25, 2010 3:00 am Post subject: |
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visualopsins wrote:
same as in my auto mc version too.
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keltzar
Joined: 22 Apr 2010
Posts: 70
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| Posted: Mon Apr 26, 2010 9:45 am Post subject: |
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keltzar wrote:
Photos are not clear... but what you may be looking at are the edges of the lens element against its retaining or spacer ring where the blackening material has deteriorated and flaked off ...
nothing to worry about. |
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