Nikon D300 has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features Expeed processor. On the other hand, Samsung GX-20 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor .
Below you can see the D300 and GX-20 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D300 and Samsung GX-20 Cameras
Nikon D300 and Samsung GX-20 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. Nikon D300 and Samsung GX-20 sensors have been tested by DxO and the results show that GX-20 has a better overall score of 68, 1 points higher compared to D300's score of 67.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D300
67
22.1 bits
12.0 Evs
679 ISO
Samsung GX-20
68
23.1 bits
11.2 Evs
714 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
Nikon D300
or the
Samsung GX-20 ,
including hyperfocal distance.
