Samsung GX-20 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor . On the other hand, Nikon P340 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor .
Below you can see the GX-20 and P340 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung GX-20 and Nikon P340 Cameras
As seen above, Samsung GX-20 has a 8.8x Larger sensor area than Nikon P340. 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 GX-20 and Nikon P340 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, GX-20 has scored 68, 14 points higher than P340.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Samsung GX-20
68
23.1 bits
11.2 Evs
714 ISO
Nikon P340
54
20.7 bits
11.9 Evs
273 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 GX-20
or the
Nikon P340 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus 1/1.7-inch),
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.
