Why are there problems with Sigma and not Tamron?

Started Oct 28, 2011 | Discussions thread
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mike_2008 Veteran Member • Posts: 5,635
Why are there problems with Sigma and not Tamron?

At least, so far I have not heard about any problems with tamron lenses on SLT, and I have been using the 1750 f2.8 with no problems at all.

How come tamron work Ok and sigma don't?
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