Canon 700D has a
18.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 5 processor. On the other hand, Sony a5100 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor.
Sony a5100's sensor provides 6MP more than Canon 700D'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 700D and a5100 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 700D and Sony a5100 Cameras
As seen above, Sony a5100 has a 1.1x Larger sensor area than Canon 700D. 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
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. Canon 700D and Sony a5100 sensors have been tested by DxO and the results show that a5100 has a better overall score of 80, 19 points higher compared to 700D's score of 61.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 700D
61
21.7 bits
11.2 Evs
681 ISO
Sony a5100
80
23.8 bits
12.7 Evs
1347 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 700D
or the
Sony a5100 ,
including hyperfocal distance.
