Both Canon 1D MIII and Kodak Z915 have 10.0 MP resolution sensors but Canon 1D MIII's sensor is APS-H (28.7 x 18.7 mm ) and Kodak Z915's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Canon 1D MIII's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Kodak Z915.
Below you can see the 1D MIII and Z915 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1D MIII and Kodak Z915 Cameras
As seen above, Canon 1D MIII has a 19.1x Larger sensor area than Kodak Z915. 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 MIII
or the
Kodak Z915 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-H versus 1/2.3-inch),
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.
