Both Panasonic S9 and Sony RX1R have Full frame sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Another similarity between these two cameras is that both Sony RX1R and Panasonic S9 sensors lack anti-alias (Low-Pass) filters. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the S9 and RX1R sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic S9 and Sony RX1R Cameras
Panasonic S9 and Sony RX1R have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Panasonic S9
or the
Sony RX1R ,
including hyperfocal distance.
