Panasonic GX8 has a
20.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine processor. On the other hand, Olympus E-M5 II has a
16.0MP Four Thirds (17.3 x 13 mm ) sized MOS sensor and features TruePic VII processor.
Below you can see the GX8 and E-M5 Mark II sensor size comparison.
Panasonic GX8 and Olympus E-M5 II 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. On the other hand, since Olympus E-M5 II has 26% larger pixel area (14.12µm2 vs 11.16µm2) compared to Panasonic GX8, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Panasonic GX8 and Olympus E-M5 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, GX8 has scored 75, 2 points higher than E-M5 Mark II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GX8 |
75 |
23.5 bits |
12.6 Evs |
806 ISO |
Olympus E-M5 II |
73 |
23.0 bits |
12.4 Evs |
896 ISO |