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Thread: USM?

  1. #1
    Senior Member Chris102's Avatar
    Join Date
    Oct 2006
    Location
    Pennsylvania
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    593

    USM?

    My current lense, Canon 75-300mm III, does not have the USM focusing on it. Will this be a problem for taking aviation photos? I heard that the DC motor has trouble focusing in on moving objects.

  2. #2
    Senior Member
    Join Date
    Apr 2005
    Posts
    8,285
    You will be able to get shots, that's not a problem. You'll have to ensure you really learn to pan well to avoid a blur, but you can shot moving aircraft just fine.

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