Nikon 1 J4 has a
18.0MP 1' (13.2 x 8.8 mm ) sized CMOS sensor and features Expeed 4 processor. On the other hand, Sony RX100 II has a
20.0MP 1-inch (13.2 x 8.8 mm ) sized BSI-CMOS sensor .
Below you can see the 1 J4 and RX100 II sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon 1 J4 and Sony RX100 II Cameras
Nikon 1 J4 and Sony RX100 II have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Nikon 1 J4 has 9% larger pixel area compared to Sony RX100 II, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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 J4
or the
Sony RX100 II ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1' versus 1-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.
