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 A850 has a
25.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the A99 and A850 sensor size comparison.
Sony A99 and Sony A850 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 A99 and Sony A850 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, 10 points higher than A850.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A99 |
89 |
25.0 bits |
14.0 Evs |
1555 ISO |
Sony A850 |
79 |
23.8 bits |
12.2 Evs |
1415 ISO |