canon 24-105 zoom lens l series strange sound

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    canon 24-105mm f4 ii l usm lens making peculiar noise

    Anyone owns a Canon 24-105mm f4 ii L? I just bought one, new and it makes a peculiar noise as follows: About two seconds after the moment when the lens whirs into autofocus, it makes another whirring noise - a bit higher pitched) for no reason -- and so every time. This seems odd to me. I've...
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