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spiralcity
Joined: 02 Oct 2008
Posts: 1207
Location: Chicago, U.S.A
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 Posted: Thu Feb 12, 2009 7:05 am Post subject: Pentacon 50mm 1.8 HELP!!!!! |
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spiralcity wrote:
Can someone help me fix my Pentacon?
The diaphram is stuck wide open, if anyone likes to tinker with lenses I would be more than happy to ship it to you for a repair. no need to worry about screwing it up, it's already screwed!
Drop me a PM ,PLEASE!
Thanks,
Kevin |
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Olivier
Joined: 18 Feb 2009
Posts: 5084
Location: France
Expire: 2015-08-06
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| Posted: Thu Feb 19, 2009 11:04 pm Post subject: |
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Olivier wrote:
I have the same problem...
So if anybody could help in this topic, it would be really fine.
May be the diaphragm needs to be cleaned ?
Thanks.
Olivier
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Olivier - Moderator 
Dslr : Olympus Pen E-P2 - Fujifilm X-Pro2 - Canon 5D MkII.
SLr and MF lenses : for feedback and helping people, cameras and lenses I own : full list here http://forum.mflenses.com/viewtopic,p,1442740.html#1442740 |
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rawhead
Joined: 09 Feb 2009
Posts: 1525
Location: Boston, MA
Expire: 2014-04-29
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| Posted: Thu Feb 19, 2009 11:21 pm Post subject: |
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rawhead wrote:
Does switching the A/M switch and depressing the aperture pin have any effect?
One of my Pentacons had an issue where it would not stop down past f8; turned out to be a worn out plastic part of the A/M switch that just wasn't pressing on the aperture mechanism hard enough. So what I did was opened the back, and took off the spring on the pin mechanism. Now, the A/M switch is completely disfunctional, but I have a fully manual and functional aperture blades that stop all the way down to f16. |
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spiralcity
Joined: 02 Oct 2008
Posts: 1207
Location: Chicago, U.S.A
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| Posted: Fri Feb 20, 2009 5:58 am Post subject: |
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spiralcity wrote:
Im sending mine in to a repair shop. Gonna cost me 55.00 USD! The lens isnt even worth that much, but im fixing it just the same.   |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Fri Feb 20, 2009 6:14 am Post subject: |
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hk300 wrote:
| spiralcity wrote: |
| Im sending mine in to a repair shop. Gonna cost me 55.00 USD! The lens isnt even worth that much, but im fixing it just the same. |
55 usd! that is too much!
Try to buy another one from a member and sell yours.
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No longer member , please don't try to contact to him |
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rawhead
Joined: 09 Feb 2009
Posts: 1525
Location: Boston, MA
Expire: 2014-04-29
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| Posted: Fri Feb 20, 2009 8:02 am Post subject: |
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rawhead wrote:
Definitely buy another one!! They're dime a dozen!!
Click here to see on Ebay
You will have money left over, and with the broken one, you can use to take it apart and learn about its innards  |
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edumad
Joined: 11 Feb 2009
Posts: 348
Location: Esposende, Portugal
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| Posted: Fri Feb 20, 2009 1:42 pm Post subject: |
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edumad wrote:
It might be oil that got into the diaphragm.
I'm seeing this in a chinon 135mm and in a tokina (its getting slow moving the blades). I found the spring in the chinon was not very strong and it would not move the blades because of the viscosity of the grease between the blades.
Lets hope someone close to you volunteers. If not, buy another one, cuz the shipping will probably be thereabouts...
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