Both Sony A68 and Canon 80D have APS-C sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the A68 and 80D sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A68 and Canon 80D Cameras
Sony A68 and Canon 80D 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
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A68
79
24.1 bits
13.5 Evs
701 ISO
Canon 80D
79
23.6 bits
13.2 Evs
1135 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 A68
or the
Canon 80D ,
including hyperfocal distance.
