Sony A560 has a
14.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Sony A580 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the A560 and A580 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A560 and Sony A580 Cameras
Sony A560 and Sony A580 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Sony A560 has 14% larger pixel area compared to Sony A580, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Sony A560 and Sony A580 sensors have been tested by DxO and the results show that A580 has a better overall score of 80, 10 points higher compared to A560's score of 70.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A560
70
22.5 bits
12.3 Evs
817 ISO
Sony A580
80
23.8 bits
13.3 Evs
1121 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 A580 ,
including hyperfocal distance.
