There has not been a video centric review of the Olympus E-M1 Mark II yet but at least now we have the price and sample videos. The price is $2000 and it will take some careful evaluation to determine whether or not this camera is worth it.
Ming Thein, a respected photographer, has commented on this camera. In regards to the dynamic range in video, Ming points out: “Unfortunately, dynamic range is still limited, so care is required with exposure.” For my video uses I would pick dynamic range over sharpness any day but the saving grace for this camera may be its IBIS. This doesn’t bode well for the Panasonic GH5 which is reported to use a similar sensor (lets hope their 10-bit and log implementations address dynamic range sufficiently).