Both Olympus E-M1 and Olympus E-M5 have Four Thirds sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the E-M1 and E-M5 sensor size comparison.
Olympus E-M1 and Olympus E-M5 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 Olympus E-M1 and Olympus E-M5 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, E-M1 has scored 73, 2 points higher than E-M5.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Olympus E-M1 |
73 |
23.0 bits |
12.7 Evs |
757 ISO |
Olympus E-M5 |
71 |
22.8 bits |
12.3 Evs |
826 ISO |