Both Samsung NX30 and Sony RX100 V have 20.0 MP resolution sensors but Samsung NX30's sensor is APS-C (23.5 x 15.7 mm ) and Sony RX100 V's sensor is 1″ (13.2 x 8.8 mm ).
Since Samsung NX30's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Sony RX100 V.
Below you can see the NX30 and RX100 V sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung NX30 and Sony RX100 V Cameras
As seen above, Samsung NX30 has a 3.2x Larger sensor area than Sony RX100 V. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
Both Samsung NX30 and Sony RX100 V 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, NX30 has scored 77, 7 points higher than RX100 V.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung NX30
77
23.5 bits
12.4 Evs
1014 ISO
Sony RX100 V
70
22.8 bits
12.4 Evs
586 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 NX30
or the
Sony RX100 V ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus 1″ ),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
