Both Nikon D600 and Sony A99 have Full frame sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the D600 and A99 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D600 and Sony A99 Cameras
Nikon D600 and Sony A99 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 Nikon D600 and Sony A99 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, D600 has scored 94, 5 points higher than A99.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D600
94
25.1 bits
14.2 Evs
2980 ISO
Sony A99
89
25.0 bits
14.0 Evs
1555 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
Nikon D600
or the
Sony A99 ,
including hyperfocal distance.
