Nikon D300S has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features Expeed processor. On the other hand, Sony A380 has a
14.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor and features Bionz processor.
Below you can see the D300S and A380 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D300S and Sony A380 Cameras
Nikon D300S and Sony A380 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Nikon D300S has 14% larger pixel area compared to Sony A380, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Nikon D300S and Sony A380 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, D300S has scored 70, 3 points higher than A380.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D300S
70
22.5 bits
12.2 Evs
787 ISO
Sony A380
67
22.6 bits
11.8 Evs
614 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 D300S
or the
Sony A380 ,
including hyperfocal distance.
