70-200 Getting hot.

Started Aug 6, 2010 | Discussions thread
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AusPhil
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70-200 Getting hot.
Aug 6, 2010

Received my 70-200mm F4 yesterday & promply filled it up from the coffee maker. I was suprised at how quickly the outer surface of the focus ring heated up.

Has anyone else exoerienced this. I assumed L Series Mugs to be well sealed, but in the case of my copy there is definately evidence of heat escaping thru the body.

Is this typical of current production runs, or could I have received either a counterfeit or poor quality copy.

Thakns

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Phil
Canon 50D, A550, T-90, T-70, A-1
Kodak DX4900, P850

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Canon EOS 50D Canon EF-S 10-22mm f/3.5-4.5 USM Canon EF-S 18-200mm f/3.5-5.6 IS Canon EF 100-400mm f/4.5-5.6L IS USM Canon EF-S 60mm f/2.8 Macro USM +2 more
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