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Thread: HELP: High frequency sound when focusing!

  1. #1

    Default HELP: High frequency sound when focusing!

    Never experienced this with my 7D before.. camera is performing perfectly normal until i could recently hear a high frequency sound ringing against my ears when the shutter button is depressed. It is very subtle and faint (~18000 hz). Unfortunately i have only one lens to try on



    Check link for sample of sound

    http://www.youtube.com/watch?v=fFmiL...eature=related
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  2. #2

    Default Re: HELP: High frequency sound when focusing!

    Quote Originally Posted by Ouranos View Post
    #@^% !!
    My speakers were on full blast

  3. #3

    Default Re: HELP: High frequency sound when focusing!

    haven't experience that on canon lenses before,
    but on Nikon, the AF-S lenses when unused for some time, the AF will get squeaky, and it goes away after some use.

    I suggest you bring the lens down to CSC to have it checked, and get a quotation if it needs to be fixed.

  4. #4

    Default Re: HELP: High frequency sound when focusing!

    Quote Originally Posted by ismokeweed79 View Post
    #@^% !!
    My speakers were on full blast
    ouch!!!

  5. #5

    Default Re: HELP: High frequency sound when focusing!

    hmm, i think it's better for you to bring down to CSC for a look... but are you sure it wasnt your ears?? lol...

  6. #6
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    Default Re: HELP: High frequency sound when focusing!

    Quote Originally Posted by ismokeweed79 View Post
    #@^% !!
    My speakers were on full blast
    Same here, I was using a headphone
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  7. #7

    Default Re: HELP: High frequency sound when focusing!

    Could b ur IS activating... my 70-300 also have a high freq sound when I doing focus look. But then again, it may b other things. So if u r not sure, pls bring back to service center
    Last edited by crabball; 25th December 2010 at 09:54 AM. Reason: add more input

  8. #8

    Default Re: HELP: High frequency sound when focusing!

    Quote Originally Posted by crabball View Post
    Could b ur IS activating... my 70-300 also have a high freq sound when I doing focus look. But then again, it may b other things. So if u r not sure, pls bring back to service center
    hmm, I don't think that sound like noise from the IS mechanism

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