Panasonic GM1 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Sony a5000 has a
20.0MP APS-C (23.2 x 15.4 mm ) sized CMOS sensor and features Bionz X processor.
Below you can see the GM1 and a5000 sensor size comparison.
As seen above, Sony a5000 has a 1.6x Larger sensor area than Panasonic GM1. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Panasonic GM1 and Sony a5000 sensors have been tested by DxO and the results show that a5000 has a better overall score of 79, 13 points higher compared to GM1's score of 66.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GM1 |
66 |
22.3 bits |
11.7 Evs |
660 ISO |
Sony a5000 |
79 |
23.8 bits |
13.0 Evs |
1089 ISO |