Canon 1200D has a
18.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 4 processor. On the other hand, Sony A100 has a
10.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor .
Canon 1200D's sensor provides 8MP more than Sony A100'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 1200D and A100 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1200D and Sony A100 Cameras
As seen above, Sony A100 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 Canon 1200D and Sony A100 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, 1200D has scored 63, 2 points higher than A100.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 1200D
63
21.9 bits
11.3 Evs
724 ISO
Sony A100
61
22.0 bits
11.2 Evs
476 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
Canon 1200D
or the
Sony A100 ,
including hyperfocal distance.