Nikon D70s has a
6.0MP APS-C (23.7 x 15.5 mm ) sized CCD sensor . On the other hand, Nikon D80 has a
10.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor .
Below you can see the D70s and D80 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D70s and Nikon D80 Cameras
Nikon D70s and Nikon D80 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. Nikon D70s and Nikon D80 sensors have been tested by DxO and the results show that D80 has a better overall score of 61, 11 points higher compared to D70s's score of 50.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D70s
50
20.4 bits
10.3 Evs
529 ISO
Nikon D80
61
22.1 bits
11.2 Evs
524 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 D70s
or the
Nikon D80 ,
including hyperfocal distance.
