Nikon D7000 has a
16.0MP APS-C (23.6 x 15.7 mm ) sized CMOS sensor and features Expeed 2 processor. On the other hand, Nikon D90 has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor .
Below you can see the D7000 and D90 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D7000 and Nikon D90 Cameras
Nikon D7000 and Nikon D90 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 Nikon D7000 and Nikon D90 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, D7000 has scored 80, 7 points higher than D90.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D7000
80
23.5 bits
13.9 Evs
1167 ISO
Nikon D90
73
22.7 bits
12.5 Evs
977 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 D7000
or the
Nikon D90 ,
including hyperfocal distance.