Question about Canon Telephoto EF 300mm f/2.8L IS Image Stabilizer USM Autofocus Lens
Does it shake more than when IS is off? If the IS has failed (and it probably has) Error 01 will usually display. First, I'd try cleaning the contacts; check this article for the procedure.
If that fails, whether warranty is still in effect or not, I suggest you contact CanonUSA repair and ask their opinion. If still in warranty, and repair/replacement is suggested by Canon, ask them for an RMA for return by UPS.
Posted on Oct 16, 2010
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Posted on Jan 02, 2017
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