Blackmagic has just raised the bar. Global shutter, RC control and dynamic range. 

https://www.blackmagicdesign.com/products/blackmagicmicrocinemacamera

I came across this interesting video:

As you can see in the video they have managed to control the coaxial design without using a swash plate and all the complicated mechanisms required for that. It looks like this is an excellent concept for very light weight systems. I do wonder how easy this can be scaled up into a device that can actually carry any additional equipment. This could be useful to obtain the under 2 kg UAV weight for the Canadian regulations.