Sony A65 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Pentax ist DL2 has a
6.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor .
Sony A65's sensor provides 18MP more than Pentax ist DL2'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 A65 and ist DL2 sensor size comparison.
Sony A65 and Pentax ist DL2 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 Sony A65 and Pentax ist DL2 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, A65 has scored 74, 9 points higher than ist DL2.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A65 |
74 |
23.4 bits |
12.6 Evs |
717 ISO |
Pentax ist DL2 |
65 |
22.9 bits |
11.1 Evs |
639 ISO |