To learn about what you're calling "shakiness", look up 'rolling shutter'. It's a way of processing only one row of pixels at a time. CMOS sensors all have this

To learn about what you're calling "shakiness", look up 'rolling shutter'. It's a way of processing only one row of pixels at a time. CMOS sensors all have this problem. They are able to have much cheaper and slower processors in cameras this way but he result is garbage and nobody notices except people like myself who worked in camera department and operator, and even many of them didn't understand. Only after a decade of trash CMOS sensors are people starting to realize that cameras did not get exponentially better overnighy. They got worse. Even RED cameras use these CMoS sensors, albeit very fast ones. Alexas have proper global shutters along with most Blackmagic cameras.