Both Panasonic SZ8 and Nikon Df have 16.0 MP resolution sensors but Panasonic SZ8'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 SZ8.
Below you can see the SZ8 and Df sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic SZ8 and Nikon Df Cameras
As seen above, Nikon Df has a 31.0x Larger sensor area than Panasonic SZ8. 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 SZ8
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.
