Sony A58 has a
20.0MP APS-C (23.2 x 15.4 m ) sized CMOS sensor . On the other hand, Sony A55 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the A58 and A55 sensor size comparison.
Sony A58 and Sony A55 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
Both Sony A58 and Sony A55 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, A58 has scored 74, 1 points higher than A55.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A58 |
74 |
23.3 bits |
12.5 Evs |
753 ISO |
Sony A55 |
73 |
23.0 bits |
12.4 Evs |
816 ISO |