Sony A580 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Canon 1200D has a
18.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 4 processor.
Below you can see the A580 and 1200D sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A580 and Canon 1200D Cameras
As seen above, Sony A580 has a 1.1x Larger sensor area than Canon 1200D. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
Both Sony A580 and Canon 1200D 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, A580 has scored 80, 17 points higher than 1200D.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A580
80
23.8 bits
13.3 Evs
1121 ISO
Canon 1200D
63
21.9 bits
11.3 Evs
724 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 A580
or the
Canon 1200D ,
including hyperfocal distance.