Canon 400D has a
10.0MP APS-C (22.2 x 14.8 mm ) sized CMOS sensor . On the other hand, Canon 1100D has a
12.0MP APS-C (22.2 x 14.8 mm ) sized CMOS sensor and features Digic 4 processor.
Below you can see the 400D and 1100D sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 400D and Canon 1100D Cameras
Canon 400D and Canon 1100D have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Canon 400D has 20% larger pixel area compared to Canon 1100D, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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 400D
62
22.1 bits
11.0 Evs
664 ISO
Canon 1100D
62
21.9 bits
11.0 Evs
755 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 400D
or the
Canon 1100D ,
including hyperfocal distance.
