Why no Sigma/Tamron lens for X mount?

Started Jun 18, 2014 | Discussions thread
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Jay2k Forum Member • Posts: 50
Why no Sigma/Tamron lens for X mount?

Why no Sigma/Tamron lens for X mount? Is it due to smaller foot print of X mount users or patent issues with reverse engineering the AF system

they could add some real value in filling the gap

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jrk
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