Samsung GX-20 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor . On the other hand, Nikon D7000 has a
16.0MP APS-C (23.6 x 15.7 mm ) sized CMOS sensor and features Expeed 2 processor.
Below you can see the GX-20 and D7000 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung GX-20 and Nikon D7000 Cameras
Samsung GX-20 and Nikon D7000 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. Samsung GX-20 and Nikon D7000 sensors have been tested by DxO and the results show that D7000 has a better overall score of 80, 12 points higher compared to GX-20's score of 68.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung GX-20
68
23.1 bits
11.2 Evs
714 ISO
Nikon D7000
80
23.5 bits
13.9 Evs
1167 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Samsung GX-20
or the
Nikon D7000 ,
including hyperfocal distance.
