Samsung NX2000 has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor . On the other hand, Sony A57 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor .
Below you can see the NX2000 and A57 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung NX2000 and Sony A57 Cameras
Samsung NX2000 and Sony A57 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
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung NX2000
75
23.4 bits
12.3 Evs
908 ISO
Sony A57
75
23.4 bits
13.0 Evs
785 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 NX2000
or the
Sony A57 ,
including hyperfocal distance.