Both Nikon D3000 and FujiFilm HS10 have 10.0 MP resolution sensors but Nikon D3000's sensor is APS-C (23.6 x 15.8 mm ) and FujiFilm HS10's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Nikon D3000's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to FujiFilm HS10.
Below you can see the D3000 and HS10 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D3000 and FujiFilm HS10 Cameras
As seen above, Nikon D3000 has a 13.3x Larger sensor area than FujiFilm HS10. 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
Nikon D3000
or the
FujiFilm HS10 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus 1/2.3-inch),
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.
