Both Panasonic GX850 and Panasonic GX7 have 16.0 MP resolution sensors but Panasonic GX850's sensor is Four Thirds (17.3 x 13 mm ) and Panasonic GX7's sensor is Four Thirds (17.3 x 13 mm ).
Since Panasonic GX7's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Panasonic GX850.
Another difference between these two cameras is that Panasonic GX850'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 GX850 and GX7 sensor size comparison.
Panasonic GX850 and Panasonic GX7 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
Both Panasonic GX850 and Panasonic GX7 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, GX850 has scored 73, 3 points higher than GX7.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GX850 |
73 |
23.2 bits |
13.3 Evs |
586 ISO |
Panasonic GX7 |
70 |
22.6 bits |
12.2 Evs |
718 ISO |