Both Panasonic FH25 and Nikon Df have 16.0 MP resolution sensors but Panasonic FH25's sensor is 1/2.3-inch (6.08 x 4.56 mm ) and Nikon Df's sensor is Full frame (36 x 23.9 mm ).
Since Nikon Df'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 FH25.
Below you can see the FH25 and Df sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FH25 and Nikon Df Cameras
As seen above, Nikon Df has a 31.0x Larger sensor area than Panasonic FH25. 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 FH25
or the
Nikon Df ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch 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.
