Sony A58 has a
20.0MP APS-C (23.2 x 15.4 m ) sized CMOS sensor . On the other hand, Canon 4000D 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 A58 and 4000D sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A58 and Canon 4000D Cameras
Sony A58 and Canon 4000D 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 A58 and Canon 4000D 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, A58 has scored 74, 11 points higher than 4000D.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A58
74
23.3 bits
12.5 Evs
753 ISO
Canon 4000D
63
21.9 bits
11.4 Evs
695 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 A58
or the
Canon 4000D ,
including hyperfocal distance.
