Both Fujifilm S3 Pro and Nikon D70s have APS-C sized 6.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the S3 Pro and D70s sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm S3 Pro and Nikon D70s Cameras
Fujifilm S3 Pro and Nikon D70s 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 Fujifilm S3 Pro and Nikon D70s 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, S3 Pro has scored 60, 10 points higher than D70s.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Fujifilm S3 Pro
60
20.9 bits
13.5 Evs
346 ISO
Nikon D70s
50
20.4 bits
10.3 Evs
529 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
Fujifilm S3 Pro
or the
Nikon D70s ,
including hyperfocal distance.
