Sony A6400 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Canon RP has a
26.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Digic 8 processor.
Below you can see the A6400 and EOS RP sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A6400 and Canon RP Cameras
As seen above, Canon RP has a 2.4x Larger sensor area than Sony A6400. 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.
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. Sony A6400 and Canon RP sensors have been tested by DxO and the results show that EOS RP has a better overall score of 85, 2 points higher compared to A6400's score of 83.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A6400
83
24.0 bits
13.6 Evs
1431 ISO
Canon RP
85
24.0 bits
11.9 Evs
2977 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
Sony A6400
or the
Canon RP ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C 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.
