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Thread: I know what USM or HSM mean but it affect IQ??

  1. #1

    Default I know what USM or HSM mean but it affect IQ??

    As the above topic
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
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  2. #2
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    Default Re: I know what USM or HSM mean but it affect IQ??

    Nope.

  3. #3

    Default Re: I know what USM or HSM mean but it affect IQ??

    If you know what it means, then you know what it does, so you should know it doesn't affect IQ...
    Alpha

  4. #4

    Default Re: I know what USM or HSM mean but it affect IQ??

    hahaha ya but just wanted to double confirm that it wont affect the IQ...
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
    My flickr

  5. #5

    Default Re: I know what USM or HSM mean but it affect IQ??

    are you sure you know what it means....

    iq is dependent on optics, hsm or usm has nothing to do with that.

  6. #6
    Moderator ortega's Avatar
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    Default Re: I know what USM or HSM mean but it affect IQ??

    it affects EQ and to some their IQ as well

  7. #7

    Default Re: I know what USM or HSM mean but it affect IQ??

    Well if you really must insist. USM and HSM has faster and quiet motor, sometime that split second may offer you a better catch.

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