This video very clearly shows how impressive the new Kipon EF adapter is for Micro Four Thirds. It is shown working with the Canon 70-200mm F2.8L on the Panasonic GX7. I might even expect performance to be more impressive on the GH4 thanks to its faster AF engine.
(Thanks to A1ex for the tip off). Developer “leegong” of Nikon Hacker has made enormous progress in getting raw video from the live view function of the Nikon D5100. Early builds of the patch output raw frames to the card and A1ex of Magic Lantern has written a prototype / test DNG converter.