Sony A380 has a
14.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor and features Bionz processor. On the other hand, Fujifilm X100 has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features EXR processor.
One other difference between these two cameras that is worth mentioning is that Fujifilm X100's sensor doesn't have an 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 A380 and X100 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A380 and Fujifilm X100 Cameras
Sony A380 and Fujifilm X100 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 Fujifilm X100 has 14% larger pixel area (30.54µm 2 vs 26.58µm 2 ) compared to Sony A380, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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. Sony A380 and Fujifilm X100 sensors have been tested by DxO and the results show that X100 has a better overall score of 73, 6 points higher compared to A380's score of 67.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A380
67
22.6 bits
11.8 Evs
614 ISO
Fujifilm X100
73
22.9 bits
12.4 Evs
1001 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
Sony A380
or the
Fujifilm X100 ,
including hyperfocal distance.
