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kennym
Joined: 05 Mar 2009
Posts: 3
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 Posted: Thu Mar 05, 2009 3:05 pm Post subject: apeture ring |
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kennym wrote:
hi,kennym here,
ive just been given an auto mamiya sekor 135mm f2.8 m42 mount lens in super condition,except for one thing,the apeture ring turns freely,no click stops,how hard/easy is this to fix,anyone had this problem, |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Thu Mar 05, 2009 6:57 pm Post subject: |
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Attila wrote:
Welcome! I think there is a missing part... if this is true, not easy to fix without a spare lens.
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ryan s
Joined: 26 Sep 2008
Posts: 384
Location: Madison, WI
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| Posted: Thu Mar 05, 2009 7:06 pm Post subject: |
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ryan s wrote:
I fixed a lens that did this too...the ball bearing was off its spring but still inside the lens.
If you take it apart, you might find it in there 
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Pentax Bodies: K10D + D-BG2 | MX |
M: Zenitar 16/2.8 | 28/2.8 | 50/1.7 | M39: Mir-1 GP 37/2.8 M42: Vivitar 28/2.5 AD2: Tamron SP Macro 90/2.5 |
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F16SUNSHINE
Joined: 20 Aug 2007
Posts: 5486
Location: Left Coast
Expire: 2011-11-18
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| Posted: Thu Mar 05, 2009 7:19 pm Post subject: |
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F16SUNSHINE wrote:
A simple and ready source for the tiny ball bearing if missing is an old empty from ink ball point pen 
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rick_oleson
Joined: 26 Feb 2007
Posts: 386
Location: Lexington Kentucky USA
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| Posted: Fri Mar 06, 2009 4:20 am Post subject: |
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rick_oleson wrote:
Ball pen points are usually smaller than the 1mm (occasionally 1.5mm)size that goes into aperture ring detents, though. Micro-tools.com does sell the little balls though.
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kennym
Joined: 05 Mar 2009
Posts: 3
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| Posted: Fri Mar 06, 2009 1:33 pm Post subject: |
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kennym wrote:
cheers all,getting it repaired next week. |
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