Konica Minolta 7D has a
6.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor . On the other hand, Pentax K20D has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor .
Pentax K20D's sensor provides 9MP more than Konica Minolta 7D's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the 7D and K20D sensor size comparison.
Konica Minolta 7D and Pentax K20D 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. Konica Minolta 7D and Pentax K20D sensors have been tested by DxO and the results show that K20D has a better overall score of 65, 7 points higher compared to 7D's score of 58.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Konica Minolta 7D |
58 |
21.2 bits |
11.0 Evs |
613 ISO |
Pentax K20D |
65 |
22.9 bits |
11.1 Evs |
639 ISO |