Nikon D800 has a
36.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Expeed 3 processor. On the other hand, Nikon Z6 II has a
24.0MP Full frame (35.9 x 23.9 mm ) sized BSI-CMOS sensor and features Dual Expeed 6 processor.
Nikon D800's sensor provides 12MP more than Nikon Z6 II's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the D800 and Z6 Mark II sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D800 and Nikon Z6 II Cameras
Nikon D800 and Nikon Z6 II have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
DxOMark Sensor Scores
Both Nikon D800 and Nikon Z6 II sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, D800 has scored 95, 1 points higher than Z6 Mark II.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D800
95
25.3 bits
14.4 Evs
2853 ISO
Nikon Z6 II
94
25.0 bits
14.4 Evs
3303 ISO
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 D800
or the
Nikon Z6 II ,
including hyperfocal distance.
