http://www.sonyalpharumors.com/coming-soon-worlds-first-translucent-e-mount-adapter-for-canon-lenses/
possibly it facilitated communication between lens and camera. the translucent part means that it has another sensor in the adapter telling the lens how to behave rather than the camera telling it. now if they'd put a speedbooster inside....
One thing I do not get.
Why it is needed at all?
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