Nikon D7100 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Fujifilm S3 Pro has a
6.0MP APS-C (23 x 15.5 mm ) sized CCD sensor .
Nikon D7100's sensor provides 18MP more than Fujifilm S3 Pro's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another difference between these two cameras is that Nikon D7100's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the D7100 and S3 Pro sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D7100 and Fujifilm S3 Pro Cameras
Nikon D7100 and Fujifilm S3 Pro 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 D7100 and Fujifilm S3 Pro 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, D7100 has scored 83, 23 points higher than S3 Pro.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D7100
83
24.2 bits
13.7 Evs
1256 ISO
Fujifilm S3 Pro
60
20.9 bits
13.5 Evs
346 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 D7100
or the
Fujifilm S3 Pro ,
including hyperfocal distance.
