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FORUMS Cameras, Lenses & Accessories Canon Lenses 
Thread started 28 May 2010 (Friday) 21:31
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problem with my sigma 24-70mm? Help!

 
elitejp
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May 28, 2010 21:31 |  #1

For anyone who has this lens (the non usm one) when I switch to manual focus and adjust the focus ring it sounds like the motor is still engaged to the automatic focus. All my other lenses make no sound and it will turn very smooth while this makes a bit of a whining sound and is fairly stiff when turning it. Its still under warranty so I just want to check to see if i messed it up somehow or if this is normal. So what does yours do in manual focus?


6D; canon 85mm 1.8, Tamron 24-70mm VC, Canon 135L Canon 70-200L is ii

  
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kay188
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May 28, 2010 22:31 |  #2

My lens does not make such sounds.
When I flip the AF/MF switch to MF, then shift the focus ring to MF mode, it locks into the focusing gears, and then manual focus it is nice and silent.


Ricoh GRD4 | Canon 1Ds, 1D, 1D2, 1D2n| Canon XTi | Tokina 11-16 F/2.8 | Canon 16-35L I | Canon 24 F/2.8 | Canon 35 F/2 | Canon 50 F/1.8 I | Canon 135L | Sigma 24-70 EX DG Macro | Sigma 70-200 F/2.8 APO EX DG | Sigma 30 F/1.4 |Sigma 50 F/1.4 |Sigma & Kenko 1.4x TC| Canon 580EX II | Sigma EF-500 Super | 2x Vivitar 285HV | RF-602 Triggers |

  
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elitejp
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May 29, 2010 00:55 as a reply to  @ kay188's post |  #3

thanks. I guess its off to the shop.


6D; canon 85mm 1.8, Tamron 24-70mm VC, Canon 135L Canon 70-200L is ii

  
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problem with my sigma 24-70mm? Help!
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