Nikon D3200 has a
24.0MP APS-C (23.2 x 15.4 mm ) sized CMOS sensor and features Expeed 3 processor. On the other hand, Canon 650D has a
18.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 5 processor.
Nikon D3200's sensor provides 6MP more than Canon 650D's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the D3200 and 650D sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D3200 and Canon 650D Cameras
Nikon D3200 and Canon 650D 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 D3200 and Canon 650D 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, D3200 has scored 81, 19 points higher than 650D.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D3200
81
24.1 bits
13.2 Evs
1131 ISO
Canon 650D
62
21.7 bits
11.2 Evs
722 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 D3200
or the
Canon 650D ,
including hyperfocal distance.
