Nikon D80 has a
10.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor . On the other hand, Samsung GX-20 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor .
Samsung GX-20's sensor provides 5MP more than Nikon D80'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 D80 and GX-20 sensor size comparison.
Nikon D80 and Samsung GX-20 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. Nikon D80 and Samsung GX-20 sensors have been tested by DxO and the results show that GX-20 has a better overall score of 68, 7 points higher compared to D80's score of 61.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Nikon D80 |
61 |
22.1 bits |
11.2 Evs |
524 ISO |
Samsung GX-20 |
68 |
23.1 bits |
11.2 Evs |
714 ISO |