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FORUMS Cameras, Lenses & Accessories Canon Lenses 
Thread started 12 Oct 2012 (Friday) 13:17
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Noisy USM lens 100mm f2.0

 
daltonm
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Joined Oct 2012
     
Oct 12, 2012 13:17 |  #1

Should I be concerned about this noise? Here is a link of a fuzzy video demonstrating the grinding sound:
http://www.daltonm.com​/lens/ (external link)




  
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Keyan
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Oct 12, 2012 13:56 |  #2

Does it do it when in AF and not moving the ring? Does it do it with the focus switch set to AF, MF, both?

Is that one a ring USM or a mico motor? I can't remember.


Cameras: 7D2, S100
Lenses: 17-55 f/2.8 IS USM, 18-135 STM, 24-70 f/4L IS USM, 50 f/1.4 USM,70-300L IS USM
Other Stuff: 430 EX II, Luma Labs Loop 3, CamRanger

  
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ed ­ rader
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Oct 12, 2012 13:59 as a reply to  @ Keyan's post |  #3

mine was slient.


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5D4 x2, 16-35L F4 IS, 24-70L II, 70-200L F4 IS II, 100-400L II, 14L II, sigma 15 FE, sigma 28 f1.4 art, tc 1.4 III, 430exII, gitzo 3542L + markins Q20, gitzo GT 1545T + markins Q3T, gitzo GM4562

  
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daltonm
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Hatchling
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Oct 12, 2012 14:41 as a reply to  @ Keyan's post |  #4

Does it on auto and manual both when I turn the ring and when the motor focuses




  
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Virto
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Oct 12, 2012 14:52 |  #5

Sounds like it's time for a service. That lens should be silent or nearly so.

Grinding in both AF/MF indicates some kind of failure in the focus mechanism.


Kelly - EOS 5D - EOS 40D - Rebel XS - EOS 10D - EOS 1D - SX230 - AE-1 - OM-1n - Minolta Himatic7 - EOS-1N
ABR800 - Several flashes, remote triggers, stands, too many and yet not enough lenses

  
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daltonm
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Hatchling
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Oct 12, 2012 15:06 as a reply to  @ Virto's post |  #6

Just bought used, I am going to return it. Thanks everyone.




  
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Noisy USM lens 100mm f2.0
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