Both Sony A560 and Sony A550 have APS-C sized 14.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the A560 and A550 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A560 and Sony A550 Cameras
Sony A560 and Sony A550 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 A560 and Sony A550 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, A560 has scored 70, 4 points higher than A550.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A560
70
22.5 bits
12.3 Evs
817 ISO
Sony A550
66
21.9 bits
11.8 Evs
807 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 A560
or the
Sony A550 ,
including hyperfocal distance.
