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, Olympus 1 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor and features TruePic VI processor.
Below you can see the A380 and 1 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A380 and Olympus 1 Cameras
As seen above, Sony A380 has a 9.0x Larger sensor area than Olympus 1. 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 Sony A380 and Olympus 1 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, A380 has scored 67, 16 points higher than 1.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A380
67
22.6 bits
11.8 Evs
614 ISO
Olympus 1
51
20.7 bits
11.6 Evs
179 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
Olympus 1 ,
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.
