Samsung NX200 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 NX200 and A57 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung NX200 and Sony A57 Cameras
Samsung NX200 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
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 NX200 and Sony A57 sensors have been tested by DxO and the results show that A57 has a better overall score of 75, 6 points higher compared to NX200's score of 69.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung NX200
69
22.6 bits
12.6 Evs
618 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 NX200
or the
Sony A57 ,
including hyperfocal distance.
