This is the Blackmagic Ursa (“Major”, not Mini) that is being compared to Panasonic’s GH4. This is an Apples to Oranges comparison of course but still interesting to see how the GH4 holds up.
The GH4 remains the best value 4K video camera. We prefer the appearance of its image to the A7s II and A7r II except in low light or except when you need a full frame level of depth of field. We have our fingers crossed for internal 10-bit video recording in the GH5.