Both Canon T6s and Canon T6i 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 T6s and T6i sensor size comparison.
Sensor Size and Resolution Comparison image of Canon T6s and Canon T6i Cameras
Canon T6s and Canon T6i have the same sensor sizes so they will provide same level of control over the depth of field when used with 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 T6s and Canon T6i sensors have been tested by DxO and the results show that T6i has a better overall score of 71, 1 points higher compared to T6s's score of 70.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon T6s
70
22.6 bits
12.0 Evs
915 ISO
Canon T6i
71
22.7 bits
12.0 Evs
919 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 T6s
or the
Canon T6i ,
including hyperfocal distance.
