Panasonic G85 has a 16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Sony A7 IV has a 33.0MP Full frame (35.8 x 23.8 mm ) sized BSI-CMOS sensor and features Bionz XR processor.
Sony A7 IV's sensor provides 17MP more than Panasonic G85's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another similarity between these two cameras is that both Sony A7 IV and Panasonic G85 sensors lack anti-alias (Low-Pass) filters. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the G85 and A7 IV sensor size comparison.
![Panasonic G85 vs Sony A7 IV Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Panasonic G85 and Sony A7 IV Cameras
As seen above, Sony A7 IV has a 3.8x Larger sensor area than Panasonic G85. 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 G85 and Sony A7 IV sensors have been tested by DxO and the results show that A7 IV has a better overall score of 97, 26 points higher compared to G85's score of 71.
| Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
|
Panasonic G85 |
71 |
22.8 bits |
12.5 Evs |
656 ISO |
|
Sony A7 IV |
97 |
25.4 bits |
14.7 Evs |
3379 ISO |