Both Olympus E-M10 II and Panasonic GX850 have Four Thirds sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
One other difference between these two cameras that is worth mentioning is that Panasonic GX850's sensor doesn't have an 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 E-M10 II and GX850 sensor size comparison.
Olympus E-M10 II and Panasonic GX850 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture.
DxOMark Sensor Scores
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Olympus E-M10 II |
73 |
23.1 bits |
12.5 Evs |
842 ISO |
Panasonic GX850 |
73 |
23.2 bits |
13.3 Evs |
586 ISO |