Canon 1D MIII has a
10.0MP APS-H (28.7 x 18.7 mm ) sized CMOS sensor . On the other hand, Canon 1D MII N has a
8.0MP APS-H (28.7 x 19.1 mm ) sized CMOS sensor .
Below you can see the 1D MIII and 1D MII N sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1D MIII and Canon 1D MII N Cameras
Canon 1D MIII and Canon 1D MII N have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
DxOMark Sensor Scores
Both Canon 1D MIII and Canon 1D MII N sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, 1D MIII has scored 71, 5 points higher than 1D MII N.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 1D MIII
71
22.7 bits
11.7 Evs
1078 ISO
Canon 1D MII N
66
22.3 bits
11.2 Evs
975 ISO
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
Canon 1D MII N ,
including hyperfocal distance.