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, Canon 5D MII has a
21.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 4 processor.
Below you can see the A99 and 5D MII sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A99 and Canon 5D MII Cameras
Sony A99 and Canon 5D MII 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 Canon 5D MII 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 5D MII.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A99
89
25.0 bits
14.0 Evs
1555 ISO
Canon 5D MII
79
23.7 bits
11.9 Evs
1815 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 A99
or the
Canon 5D MII ,
including hyperfocal distance.
