Both Panasonic FX48 and Nikon D90 have 12.0 MP resolution sensors but Panasonic FX48's sensor is 1/2.3-inch (6.08 x 4.56 mm ) and Nikon D90's sensor is APS-C (23.6 x 15.8 mm ).
Since Nikon D90'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 Panasonic FX48.
Below you can see the FX48 and D90 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FX48 and Nikon D90 Cameras
As seen above, Nikon D90 has a 13.5x Larger sensor area than Panasonic FX48. 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
Panasonic FX48
or the
Nikon D90 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus APS-C),
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.
