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cellotone
Joined: 13 Apr 2014
Posts: 317
Location: US
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 Posted: Wed Mar 31, 2021 2:12 am Post subject: Steinheil Munchen Macro-Tele-Quinar 135mm f/2.8 Aperture |
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cellotone wrote:
Bought this lens several years ago, but was seldomly used. Today I just found that the aperture remains wide open all the time. Lens is in M42 mount, and looked like new, aperture clicks, but the blades just not closed. Any advises? I am thinking maybe the aperture adjusted with the camera? But there is an aperture ring on it. Thank you!
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Gonzoo
Joined: 29 Mar 2010
Posts: 231
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| Posted: Fri Apr 09, 2021 8:36 am Post subject: Re: Steinheil Munchen Macro-Tele-Quinar 135mm f/2.8 Aperture |
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Gonzoo wrote:
Most certainly the aperture blades are stuck with old grease. Remove either the front or rear element to reach the aperture assembly with a q-tip soaked in something like Isopropanol. After you've resolved enough of the sticky grease the aperture should close again and can be cleaned further if required. This is a common issue with old lenses, you will find plenty tutorials on this in this forum.
| cellotone wrote: |
| Bought this lens several years ago, but was seldomly used. Today I just found that the aperture remains wide open all the time. Lens is in M42 mount, and looked like new, aperture clicks, but the blades just not closed. Any advises? I am thinking maybe the aperture adjusted with the camera? But there is an aperture ring on it. Thank you! |
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cellotone
Joined: 13 Apr 2014
Posts: 317
Location: US
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| Posted: Tue Apr 13, 2021 8:17 pm Post subject: Re: Steinheil Munchen Macro-Tele-Quinar 135mm f/2.8 Aperture |
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cellotone wrote:
| Gonzoo wrote: |
| Most certainly the aperture blades are stuck with old grease. Remove either the front or rear element to reach the aperture assembly with a q-tip soaked in something like Isopropanol. After you've resolved enough of the sticky grease the aperture should close again and can be cleaned further if required. This is a common issue with old lenses, you will find plenty tutorials on this in this forum./quote] |
Thank you for the suggestion, I will look at it. Hope to make it moving again! Best regards, 
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Gonzoo
Joined: 29 Mar 2010
Posts: 231
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| Posted: Fri Apr 16, 2021 10:27 pm Post subject: |
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Gonzoo wrote:
Make sure to take some photos, to document your progress and also to post them here.
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Sat Apr 17, 2021 5:17 am Post subject: |
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calvin83 wrote:
My Macro Quinon in Exakta mount has the same problem. Aperture not working is pretty common in Steinheil Macro lenses.
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Gonzoo
Joined: 29 Mar 2010
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| Posted: Fri May 07, 2021 6:33 pm Post subject: Re: Steinheil Munchen Macro-Tele-Quinar 135mm f/2.8 Aperture |
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Gonzoo wrote:
Were you able to fix the problem?
| cellotone wrote: |
Thank you for the suggestion, I will look at it. Hope to make it moving again! Best regards, |
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cellotone
Joined: 13 Apr 2014
Posts: 317
Location: US
Expire: 2020-09-24
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| Posted: Thu May 27, 2021 10:26 pm Post subject: Re: Steinheil Munchen Macro-Tele-Quinar 135mm f/2.8 Aperture |
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cellotone wrote:
| Gonzoo wrote: |
Were you able to fix the problem?
| cellotone wrote: |
Thank you for the suggestion, I will look at it. Hope to make it moving again! Best regards, |
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No. Found the aperture blades had been removed! I bought the lens few years ago, beautiful appearance and clean glasses, took several shots then put it back to the box, didn't check it thoroughly. A heavy lesson. 
Thank you for all the help!!
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