>>3202844>can't do proper phase detectionErrrrm, you do realise that on sensor pdaf is definitely a thing and definitely much more accurate than a dslr, as it's on the sensor, not relying on mirrors to reset in exactly the right position.
Also, the Sony A9 has shown itself to be able to focus just as fast and accurate as a 1dx ii and rolling shutter is just as good as any other camera, pic related, also, the sony A9 massively improves on this and outperforms every DSLR.