Canon R5 has a
45.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor. On the other hand, Sony A7R V has a
61.0MP Full frame (35.8 x 23.8 mm ) sized BSI-CMOS sensor and features Bionz XR processor.
Sony A7R V's sensor provides 16MP more than Canon R5'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.
One other difference between these two cameras that is worth mentioning is that Sony A7R V's sensor doesn't have an anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the R5 and A7R V sensor size comparison.
Sensor Size and Resolution Comparison image of Canon R5 and Sony A7R V Cameras
Canon R5 and Sony A7R V 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 Sony A7R V sensors have been tested by DxO and the results show that A7R V has a better overall score of 100, 5 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
Sony A7R V
100
26.1 bits
14.8 Evs
3187 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
Sony A7R V ,
including hyperfocal distance.
