Sigma DP2 Quattro has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS (Foveon X3) sensor and features TRUE III engine processor. On the other hand, Sigma DP2s has a
5.0MP APS-C (20.7 x 13.8 mm ) sized CMOS (Foveon X3) sensor and features True II processor.
Sigma DP2 Quattro'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 DP2 Quattro and DP2s sensor size comparison.
Sensor Size and Resolution Comparison image of Sigma DP2 Quattro and Sigma DP2s Cameras
As seen above, Sigma DP2 Quattro 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 DP2 Quattro
or the
Sigma DP2s ,
including hyperfocal distance.
