YI 4K has a
12.0MP (6.17 x 4.55 mm ) sized CMOS sensor and features Ambarella A9SE75 processor. On the other hand, Nikon S80 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Expeed C2 processor.
Below you can see the 4K and S80 sensor size comparison.
Sensor Size and Resolution Comparison image of YI 4K and Nikon S80 Cameras
YI 4K and Nikon S80 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.
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
YI 4K
or the
Nikon S80 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
( 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.