Both Nikon 1 J3 and Olympus SP-610UZ have 14.0 MP resolution sensors but Nikon 1 J3's sensor is 1-inch (13.2 x 8.8 mm ) and Olympus SP-610UZ's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Nikon 1 J3'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 Olympus SP-610UZ.
Below you can see the 1 J3 and SP-610UZ sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon 1 J3 and Olympus SP-610UZ Cameras
As seen above, Nikon 1 J3 has a 4.1x Larger sensor area than Olympus SP-610UZ. 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 1 J3
or the
Olympus SP-610UZ ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1-inch 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.
