Canon 1D MII has a
8.0MP APS-H (28.7 x 19.1 mm ) sized CMOS sensor . On the other hand, Sigma DP1x has a
5.0MP APS-C (20.7 x 13.8 mm ) sized CMOS (Foveon X3) sensor and features True II processor.
Below you can see the 1D MII and DP1x sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1D MII and Sigma DP1x Cameras
As seen above, Canon 1D MII has a 1.9x Larger sensor area than Sigma DP1x. 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 1D MII
or the
Sigma DP1x ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-H versus APS-C),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
