The speedbooster won't communicate with my Zeiss ZE's (28mm,35mm,50mm,85mm) on my FS700. Canon L series work fine (24-105mm, 17-40mm, 70-200mm F2.8 II)
Some of the Zeiss ZE's are on the approved list, some aren't- but they all lockup the camera for me, leaving it bricked until you pull the battery. I have contacted Metabones, and they say they tested them to work. I also have the standard Metabones adaptor which works fine with all lenses.
Anybody else out there used the Zeiss's with the FS700? Love to hear your results, as Metabones aren't helping right now. It is reminicent of the first adaptor which had to be returned twice for firmware updates in the first 3 weeks. Not sure this is ready for primetime use yet...