Pentax K-01 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor . On the other hand, Nikon D2X has a
12.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor .
Below you can see the K-01 and D2X sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K-01 and Nikon D2X Cameras
Pentax K-01 and Nikon D2X have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Nikon D2X has 31% larger pixel area (30.47µm 2 vs 23.14µm 2 ) compared to Pentax K-01, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Pentax K-01 and Nikon D2X 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, 20 points higher than D2X.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K-01
79
23.7 bits
12.9 Evs
1135 ISO
Nikon D2X
59
22.1 bits
10.9 Evs
476 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
Nikon D2X ,
including hyperfocal distance.
