Both Sony A7C II and Canon M6 MII have 33.0 MP resolution sensors but Sony A7C II's sensor is Full frame (35.8 x 23.8 mm ) and Canon M6 MII's sensor is APS-C (22.3 x 14.9 mm ).
Since Sony A7C II's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Canon M6 MII.
Another difference between these two cameras is that Sony A7C II's sensor lacks 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 A7C II and M6 II sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A7C II and Canon M6 MII Cameras
As seen above, Sony A7C II has a 2.6x Larger sensor area than Canon M6 MII. 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
Sony A7C II
or the
Canon M6 MII ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Full frame versus APS-C),
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.
