Samsung NX500 has a
28.0MP APS-C (23.5 x 15.7 mm ) sized BSI-CMOS sensor and features DRIMe 5 processor. On the other hand, Sony a5100 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor.
Another difference between these two cameras is that Samsung NX500's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the NX500 and a5100 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung NX500 and Sony a5100 Cameras
Samsung NX500 and Sony a5100 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
Both Samsung NX500 and Sony a5100 sensors have been tested by DxoMark. DxoMark 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. Of the two cameras that we are comparing, NX500 has scored 87, 7 points higher than a5100.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung NX500
87
24.8 bits
13.9 Evs
1379 ISO
Sony a5100
80
23.8 bits
12.7 Evs
1347 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 NX500
or the
Sony a5100 ,
including hyperfocal distance.