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Henry
Joined: 09 May 2001 Posts: 1636 Location: Allentown, Pennsylvania
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Posted: Fri Jul 22, 2011 1:11 am Post subject: |
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A old prof. of mine once said that if something happens only once, it's a miracle. So count your blessings. |
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45PSS
Joined: 28 Sep 2001 Posts: 4081 Location: Mid Peninsula, Ca.
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Posted: Fri Jul 22, 2011 3:14 am Post subject: |
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I've got a bad habit of not making the same mistake twice. _________________ The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU. |
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Sirius Glass
Joined: 06 Jun 2010 Posts: 162 Location: Southern California
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Posted: Fri Jul 22, 2011 10:54 pm Post subject: |
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Bert told me to use fine graphite to lubricate the shutter on my 135mm lens. That did it. Roughly one hundred firings for each speed took care of the problems. _________________ Nothing beats a good piece of glass. |
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bartbob
Joined: 30 Oct 2010 Posts: 102
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Posted: Sat Jul 23, 2011 2:48 am Post subject: |
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Sirius, was your shutter firing too slow and the graphite sped it up to normal? |
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C. Henry
Joined: 13 Dec 2005 Posts: 360 Location: North East Georgia, USA
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Posted: Sat Jul 23, 2011 1:59 pm Post subject: |
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Excess friction is only one of several possible causes of slow running of a shutter. Cleaning and PROPER lubrication corrects only this cause of slow speeds. Another possible cause is the loss of strength of the spring(s) in the mechanism which will not be corrected by cleaning and proper lubrication.
Frequently, slow running is caused by a combination of causes and no one fix cures the problem by itself!
C. Henry |
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