Sony A700 has a
12.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Sony A77 II has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor.
Sony A77 II's sensor provides 12MP more than Sony A700'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.
Below you can see the A700 and A77 II sensor size comparison.
Sony A700 and Sony A77 II 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. On the other hand, since Sony A700 has 97% larger pixel area compared to Sony A77 II, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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. Sony A700 and Sony A77 II sensors have been tested by DxO and the results show that A77 II has a better overall score of 82, 16 points higher compared to A700's score of 66.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A700 |
66 |
22.3 bits |
11.9 Evs |
581 ISO |
Sony A77 II |
82 |
24.4 bits |
13.4 Evs |
1013 ISO |