Pentax K-01 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor . On the other hand, Sony A290 has a
14.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor and features Bionz processor.
Below you can see the K-01 and A290 sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K-01 and Sony A290 Cameras
Pentax K-01 and Sony A290 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 Pentax K-01 and Sony A290 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, K-01 has scored 79, 13 points higher than A290.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K-01
79
23.7 bits
12.9 Evs
1135 ISO
Sony A290
66
22.6 bits
11.5 Evs
615 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Pentax K-01
or the
Sony A290 ,
including hyperfocal distance.
