Fujifilm X-A3 has a
24.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor and features EXR Processor II processor. On the other hand, Samsung NX1100 has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor .
Below you can see the X-A3 and NX1100 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm X-A3 and Samsung NX1100 Cameras
Fujifilm X-A3 and Samsung NX1100 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. On the other hand, since Samsung NX1100 has 20% larger pixel area (18.48µm 2 vs 15.37µm 2 ) compared to Fujifilm X-A3, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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
Fujifilm X-A3
or the
Samsung NX1100 ,
including hyperfocal distance.