Both GoPro Hero8 Black and YI 4K have 12.0 MP resolution sensors but GoPro Hero8 Black's sensor is 1/2.3-inch (6.17 x 4.55 mm ) and YI 4K's sensor is
Since YI 4K'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 GoPro Hero8 Black.
Below you can see the Hero8 Black and 4K sensor size comparison.
Sensor Size and Resolution Comparison image of GoPro Hero8 Black and YI 4K Cameras
GoPro Hero8 Black and YI 4K 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
GoPro Hero8 Black
or the
YI 4K ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus ),
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.
