Canon 5D has a
13.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic II processor. On the other hand, Canon 1D MIII has a
10.0MP APS-H (28.7 x 18.7 mm ) sized CMOS sensor .
Below you can see the 5D and 1D MIII sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 5D and Canon 1D MIII Cameras
As seen above, Canon 5D has a 1.6x Larger sensor area than Canon 1D MIII. 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.
DxOMark Sensor Scores
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 5D
71
22.9 bits
11.1 Evs
1368 ISO
Canon 1D MIII
71
22.7 bits
11.7 Evs
1078 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 5D
or the
Canon 1D MIII ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Full frame versus APS-H),
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.
