Both Sony A7c and Sony A6600 have 24.0 MP resolution sensors but Sony A7c's sensor is Full frame (35.8 x 23.8 mm ) and Sony A6600's sensor is APS-C (23.5 x 15.6 mm ).
Since Sony A7c'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 Sony A6600.
Below you can see the A7c and A6600 sensor size comparison.
As seen above, Sony A7c has a 2.3x Larger sensor area than Sony A6600. 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 Sony A7c and Sony A6600 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, A7c has scored 95, 13 points higher than A6600.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A7c |
95 |
25.0 bits |
14.7 Evs |
3407 ISO |
Sony A6600 |
82 |
23.8 bits |
13.4 Evs |
1497 ISO |