Konica Minolta 5D has a
6.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor . On the other hand, Sigma SD15 has a
5.0MP APS-C (20.7 x 13.8 mm ) sized CMOS (Foveon X3) sensor and features True II processor.
One other difference between these two cameras that is worth mentioning is that Sigma SD15's sensor doesn't have an anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the 5D and SD15 sensor size comparison.
Sensor Size and Resolution Comparison image of Konica Minolta 5D and Sigma SD15 Cameras
As seen above, Konica Minolta 5D has a 1.3x Larger sensor area than Sigma SD15. 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
Konica Minolta 5D
or the
Sigma SD15 ,
including hyperfocal distance.
