Canon R5 has a
45.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor. On the other hand, Nikon Z8 has a
46.0MP Full frame (35.9 x 23.9 mm ) sized Stacked CMOS sensor and features Expeed 7 processor.
Below you can see the R5 and Z8 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon R5 and Nikon Z8 Cameras
Canon R5 and Nikon Z8 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
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Canon R5 and Nikon Z8 sensors have been tested by DxO and the results show that Z8 has a better overall score of 98, 3 points higher compared to R5's score of 95.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon R5
95
25.3 bits
14.6 Evs
3042 ISO
Nikon Z8
98
26.3 bits
14.2 Evs
2548 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
Canon R5
or the
Nikon Z8 ,
including hyperfocal distance.