Canon M3 has a
24.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features DIGIC 6 processor. On the other hand, Ricoh GXR A12 50mm has a
12.0MP APS-C (23.6 x 15.7 mm ) sized CMOS sensor and features GR engine III processor.
Canon M3's sensor provides 12MP more than Ricoh GXR A12 50mm'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 M3 and GXR A12 50mm F2.5 Macro sensor size comparison.
Sensor Size and Resolution Comparison image of Canon M3 and Ricoh GXR A12 50mm Cameras
As seen above, Ricoh GXR A12 50mm has a 1.1x Larger sensor area than Canon M3. 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
Canon M3
or the
Ricoh GXR A12 50mm ,
including hyperfocal distance.
