Fujifilm X20 has a
12.0MP 2/3-inch (8.8 x 6.6 mm ) sized CMOS X-TRANS II sensor and features EXR Processor II processor. On the other hand, Nikon S9900 has a
16.0MP 1/2.3' (6.17 x 4.55 mm ) sized CMOS sensor .
Below you can see the X20 and S9900 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm X20 and Nikon S9900 Cameras
As seen above, Fujifilm X20 has a 2.1x Larger sensor area than Nikon S9900. 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.
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 X20
or the
Nikon S9900 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(2/3-inch versus 1/2.3' ),
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.