Canon 400D has a 10.0MP APS-C (22.2 x 14.8 mm ) sized CMOS sensor . On the other hand, Pentax K-r has a 12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features Prime II processor.
Below you can see the 400D and K-r sensor size comparison.
![Canon 400D vs Pentax K-r Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Canon 400D and Pentax K-r Cameras
As seen above, Pentax K-r has a 1.1x Larger sensor area than Canon 400D. 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
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Canon 400D and Pentax K-r sensors have been tested by DxO and the results show that K-r has a better overall score of 72, 10 points higher compared to 400D's score of 62.
| Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
|
Canon 400D |
62 |
22.1 bits |
11.0 Evs |
664 ISO |
|
Pentax K-r |
72 |
22.9 bits |
12.4 Evs |
755 ISO |