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marks
Feb 26, 2003, 7:02 PM
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Registered: Aug 3, 2002
Posts: 376
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thinking of getting a eos 300 some of them are usm lenses what does this mean/do
thanks
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boardcrazzy
Feb 26, 2003, 7:09 PM
Post #2 of 2
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Registered: Oct 22, 2002
Posts: 183
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USM is Canon's ultrasonic drive for the lense autofocus. It is faster and quieter than a non USM drive. If that is important to you, you should make sure the camera body supports it.
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