Both Panasonic S1 and Sony A7 II have Full frame sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Another difference between these two cameras is that Panasonic S1's sensor lacks anti-alias (Low-Pass) filter. 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 S1 and A7 II sensor size comparison.
Panasonic S1 and Sony A7 II 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.
DxOMark Sensor Scores
Both Panasonic S1 and Sony A7 II sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, S1 has scored 95, 5 points higher than A7 II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic S1 |
95 |
25.2 bits |
14.5 Evs |
3333 ISO |
Sony A7 II |
90 |
24.9 bits |
13.6 Evs |
2449 ISO |