« on: April 02, 2014, 08:24:18 AM »
The optics of FE 24-70 f/4 are very much from ZEISS made by ZEISS, including the anti-reflective coating ... its just that the lens isn't all that good for the money they are charging, because of which some people speculate that ZEISS "only provide QC to Sony".
It's a bit more than a speculation.
I did some research, and Zeiss/Sony lenses are indeed designed by Zeiss, but in close collaboration with Sony, which is then the sole responsible for production and distribution. This means that Zeiss engineers are restricted to what Sony is able or willing to produce.
In fact it's not a contradiction that Zeiss will announce some manual focus primes for the FE mount. Those will be 100% Zeiss lenses like the ZE or ZF primes.