Strange Image Stabilization Noise from Canon EOS 5D Mark III-mounted Canon EF 200mm f/2.0L IS USM Lens

Confirmed: The Canon EF 200mm f/2.0L IS USM Lens' image stabilization system makes a modestly-disturbing churning sound when used on the Canon EOS 5D Mark III in AI Servo AF mode. The same sound is made briefly when the shutter release button is released in One Shot AF mode.
I do not know if this is a problem or not. IS appears to be working properly and the images created during the strange sound are quite sharp. I'll let Canon know (others may have already done so).
Posted: 3/29/2012 10:13:50 AM CT   Posted By: Bryan
Posted to: Canon News    Category: Camera Gear Review News
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