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What is the difference between USM and IS?

Asked by R. Jones, Last updated: Dec 18, 2019

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Chris Kenway

Chris Kenway, Content Writer, Jacksonville

Answered Aug 13, 2019

USM and IS are two different things, but they are both used in camera lenses. USM is the acronym for Ultrasonic Motor. USM works by moving the lens element inside a camera so as to appropriately...Read More
 

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