在友站奧林派看到的
http://www.omuser.com/viewthread.php?tid=26882

hypersensory.com
http://www.hypersensory.com/sony_alpha_dslr_pictures_and_specs#comment

提到SONY有可能買下Tamron
There is also another good news to current and potential KM/Sony owners, Sony is said to have purchased Tamron (Japanese lens manufecturer). Which means that a new line of lenses will be produced including some primes. Tamron is a well established brand that has produced some outstanding lenses (such as their 90mm macro).

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不過SONY本來就是Tamron的第二大股東，
既然生產DSLR，想完全控制Tamron也不是不可能
看來大概知道3隻蔡司鏡在那裡生產的。