Both Canon ELPH 140 IS and Sony FX5 have 16.0 MP resolution sensors but Canon ELPH 140 IS's sensor is 1/2.3-inch (6.17 x 4.55 mm ) and Sony FX5's sensor is Full frame (35.6 x 23.8 mm ).
Since Sony FX5'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 Canon ELPH 140 IS.
Below you can see the ELPH 140 IS and FX5 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon ELPH 140 IS and Sony FX5 Cameras
As seen above, Sony FX5 has a 30.2x Larger sensor area than Canon ELPH 140 IS. 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
Canon ELPH 140 IS
or the
Sony FX5 ,
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.
