Pentax K20D has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor . On the other hand, Panasonic G5 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine VII FHD processor.
Below you can see the K20D and G5 sensor size comparison.
As seen above, Pentax K20D has a 1.6x Larger sensor area than Panasonic G5. 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
Both Pentax K20D and Panasonic G5 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, K20D has scored 65, 4 points higher than G5.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Pentax K20D |
65 |
22.9 bits |
11.1 Evs |
639 ISO |
Panasonic G5 |
61 |
21.4 bits |
11.6 Evs |
618 ISO |