Fujifilm S5 Pro has a
6.0MP APS-C (23 x 15.5 mm ) sized CCD sensor . On the other hand, Canon 5D MIII has a
22.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 5+ processor.
Canon 5D MIII's sensor provides 16MP more than Fujifilm S5 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.
Below you can see the S5 Pro and 5D MIII sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm S5 Pro and Canon 5D MIII Cameras
As seen above, Canon 5D MIII has a 2.4x Larger sensor area than Fujifilm S5 Pro. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in 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. Fujifilm S5 Pro and Canon 5D MIII sensors have been tested by DxO and the results show that 5D MIII has a better overall score of 81, 16 points higher compared to S5 Pro's score of 65.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Fujifilm S5 Pro
65
21.6 bits
13.5 Evs
448 ISO
Canon 5D MIII
81
24.0 bits
11.7 Evs
2293 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 S5 Pro
or the
Canon 5D MIII ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Full frame),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.