Both Nikon Df and Panasonic GX1 have 16.0 MP resolution sensors but Nikon Df's sensor is Full frame (36 x 23.9 mm ) and Panasonic GX1's sensor is Four Thirds (17.3 x 13 mm ).
Since Nikon Df'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 GX1.
Below you can see the Df and GX1 sensor size comparison.
As seen above, Nikon Df has a 3.8x Larger sensor area than Panasonic GX1. 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
Both Nikon Df and Panasonic GX1 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, Df has scored 89, 34 points higher than GX1.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Nikon Df |
89 |
24.6 bits |
13.1 Evs |
3279 ISO |
Panasonic GX1 |
55 |
20.8 bits |
10.6 Evs |
703 ISO |