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Canon EF 70-300mm IS USM Lines


I bought a Canon EF 70-300 IS USM lens this past year and was very pleased with it until recently. Now, for some reason it has begun making noise and does not always focus while I am using it in the 200 to 300mm range. I was using the Image Stablizer at the time in the option 2 mode for panning moving items such as wildlife.

Can someone possibly tell me if they are having such a problem. Offer any more suggestions in troubleshooting it or should I send it back?


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August 15, 2009

 
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