Canon 30D has a
8.0MP APS-C (22.5 x 15 mm ) sized CMOS sensor . On the other hand, Pentax K10D has a
10.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor .
Below you can see the 30D and K10D sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 30D and Pentax K10D Cameras
Canon 30D and Pentax K10D 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
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 30D and Pentax K10D sensors have been tested by DxO and the results show that K10D has a better overall score of 66, 7 points higher compared to 30D's score of 59.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 30D
59
21.5 bits
10.8 Evs
736 ISO
Pentax K10D
66
22.7 bits
11.6 Evs
522 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 30D
or the
Pentax K10D ,
including hyperfocal distance.
