another lens question

Discussion in 'Beyond the Basics' started by skatephoto, Feb 18, 2004.

  1. skatephoto

    skatephoto TPF Noob!

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    Whats the differense between a lense with usm and a micro motor. thanks
     
  2. doxx

    doxx TPF Noob!

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    Location:
    behind the viewfinder
    USM is an Ultra Sonic Motor in Canon lenses, pretty fast and ultra quiet.
    Regular AF motors are not as fast and sometimes a bit noisy...
     

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