Pentax K-r has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features Prime II processor. 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 K-r and K10D sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K-r and Pentax K10D Cameras
Pentax K-r 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
Both Pentax K-r and Pentax K10D 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, K-r has scored 72, 6 points higher than K10D.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K-r
72
22.9 bits
12.4 Evs
755 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
Pentax K-r
or the
Pentax K10D ,
including hyperfocal distance.
