Pentax K-7 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Prime II processor. On the other hand, Olympus E-PL5 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Below you can see the K-7 and E-PL5 sensor size comparison.
As seen above, Pentax K-7 has a 1.6x Larger sensor area than Olympus E-PL5. 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
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. Pentax K-7 and Olympus E-PL5 sensors have been tested by DxO and the results show that E-PL5 has a better overall score of 72, 11 points higher compared to K-7's score of 61.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Pentax K-7 |
61 |
22.6 bits |
10.6 Evs |
536 ISO |
Olympus E-PL5 |
72 |
22.8 bits |
12.3 Evs |
889 ISO |