Blackmagic 6K G2 has a
21.0MP Super 35 (23.1 x 13 mm ) sized CMOS sensor . On the other hand, Nikon Z6 III has a
24.0MP Full frame (35.9 x 23.9 mm ) sized Partially-Stacked CMOS sensor and features Expeed 7 processor.
Below you can see the Cinema Camera 6K G2 and Z6 Mark III sensor size comparison.
Sensor Size and Resolution Comparison image of Blackmagic 6K G2 and Nikon Z6 III Cameras
As seen above, Nikon Z6 III has a 2.9x Larger sensor area than Blackmagic 6K G2. 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
Blackmagic 6K G2
or the
Nikon Z6 III ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Super 35 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.
