Sony A99 has a
24.0MP Full frame (35.8 x 23.8 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Sony A58 has a
20.0MP APS-C (23.2 x 15.4 m ) sized CMOS sensor .
Below you can see the A99 and A58 sensor size comparison.
As seen above, Sony A99 has a 2.4x Larger sensor area than Sony A58. 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 A99 and Sony A58 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, A99 has scored 89, 15 points higher than A58.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A99 |
89 |
25.0 bits |
14.0 Evs |
1555 ISO |
Sony A58 |
74 |
23.3 bits |
12.5 Evs |
753 ISO |