Sony A65 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Sony NEX-5R has a
16.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Bionz processor.
Sony A65's sensor provides 8MP more than Sony NEX-5R'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 A65 and NEX-5R sensor size comparison.
Sony A65 and Sony NEX-5R have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the 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. Sony A65 and Sony NEX-5R sensors have been tested by DxO and the results show that NEX-5R has a better overall score of 78, 4 points higher compared to A65's score of 74.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A65 |
74 |
23.4 bits |
12.6 Evs |
717 ISO |
Sony NEX-5R |
78 |
23.7 bits |
13.1 Evs |
910 ISO |