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Old Aug 23, 2005, 6:18 PM   #1
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I ordered and just received the 70-200/2.8 and 2x TC. The lens appears to be functioning properly by itself but when I put the TC on I get problems. Inside the viewfinder I see a "00" where the f stop reading should be. The shutter speed appears to be reading correctly. When the lens should autofocus nothing happens at all. When I depress the shutter I get a "Er 01" on the back LCD indicating communication error between camera and lens.

Any suggestions? I'm going to try the Sigma support site as well but thought I'd try here first since responses seem to pop up pretty fast.

thanks for any suggestions
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Old Aug 23, 2005, 6:33 PM   #2
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give sigma a call they will fix it up for you pronto..
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