Check out this review by Hybrid Camera Revolution comparing the 2 mini form factor camera systems.
http://www.hybridcamerarevolution.com/2015/11/blackmagic-ursa-mini-4k-vs-sony-a7s-ii.html
Check out this review by Hybrid Camera Revolution comparing the 2 mini form factor camera systems.
http://www.hybridcamerarevolution.com/2015/11/blackmagic-ursa-mini-4k-vs-sony-a7s-ii.html