Sigma DP2s has a
5.0MP APS-C (20.7 x 13.8 mm ) sized CMOS (Foveon X3) sensor and features True II processor. On the other hand, Sony a5000 has a
20.0MP APS-C (23.2 x 15.4 mm ) sized CMOS sensor and features Bionz X processor.
Sony a5000's sensor provides 15MP more than Sigma DP2s'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 DP2s and a5000 sensor size comparison.
Sensor Size and Resolution Comparison image of Sigma DP2s and Sony a5000 Cameras
As seen above, Sony a5000 has a 1.3x Larger sensor area than Sigma DP2s. 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.
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
Sigma DP2s
or the
Sony a5000 ,
including hyperfocal distance.
