Canon 7D MII has a
20.0MP APS-C (22.4 x 15 mm ) sized CMOS sensor and features DIGIC 6 (dual) processor. On the other hand, Samsung NX11 has a
15.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features DRIM Engine processor.
Canon 7D MII's sensor provides 5MP more than Samsung NX11'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.
Below you can see the 7D MII and NX11 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 7D MII and Samsung NX11 Cameras
Canon 7D MII and Samsung NX11 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
Both Canon 7D MII and Samsung NX11 sensors have been tested by DxoMark. DxoMark 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. Of the two cameras that we are comparing, 7D MII has scored 70, 7 points higher than NX11.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 7D MII
70
22.4 bits
11.8 Evs
1082 ISO
Samsung NX11
63
22.7 bits
10.8 Evs
553 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 7D MII
or the
Samsung NX11 ,
including hyperfocal distance.