Question About 70-200mm f4L IS

Started Jan 5, 2012 | Discussions thread
Peter Kwok
Senior MemberPosts: 2,167Gear list
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It is the gyro
In reply to cheezit, Jan 6, 2012

I think the 70-200 f4 IS is the last Canon lens with mechanical rotating gyros to sense movement. The gyros are on continuously. Newer IS use non-moving piezoelectric sensors. Only the motors that move the glass elements make sound.
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Peter Kwok
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 Peter Kwok's gear list:Peter Kwok's gear list
Canon EOS 5D Mark III Canon EOS M Canon EF 17-40mm f/4.0L USM Canon EF 24-105mm f/4L IS USM Canon EF 70-200mm f/4L IS USM +1 more
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