Both Sony NEX-5R and Pentax K-01 have APS-C sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the NEX-5R and K-01 sensor size comparison.
Sony NEX-5R and Pentax K-01 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. Sony NEX-5R and Pentax K-01 sensors have been tested by DxO and the results show that K-01 has a better overall score of 79, 1 points higher compared to NEX-5R's score of 78.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony NEX-5R |
78 |
23.7 bits |
13.1 Evs |
910 ISO |
Pentax K-01 |
79 |
23.7 bits |
12.9 Evs |
1135 ISO |