Nikon D2X has a
12.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor . On the other hand, Pentax K-01 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor .
Below you can see the D2X and K-01 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D2X and Pentax K-01 Cameras
Nikon D2X and Pentax K-01 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 compared to Pentax K-01, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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. Nikon D2X and Pentax K-01 sensors have been tested by DxO and the results show that K-01 has a better overall score of 79, 20 points higher compared to D2X's score of 59.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D2X
59
22.1 bits
10.9 Evs
476 ISO
Pentax K-01
79
23.7 bits
12.9 Evs
1135 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
Nikon D2X
or the
Pentax K-01 ,
including hyperfocal distance.
