Samsung NX210 has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor . On the other hand, Pentax K-500 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor and features PRIME M processor.
Below you can see the NX210 and K-500 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung NX210 and Pentax K-500 Cameras
Samsung NX210 and Pentax K-500 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 NX210 and Pentax K-500 sensors have been tested by DxO and the results show that K-500 has a better overall score of 79, 8 points higher compared to NX210's score of 71.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung NX210
71
22.8 bits
12.5 Evs
719 ISO
Pentax K-500
79
23.7 bits
13.1 Evs
1087 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 NX210
or the
Pentax K-500 ,
including hyperfocal distance.