Nikon Z50 II has a
21.0MP APS-C (23.5 x 15.7 mm ) sized BSI-CMOS sensor and features Expeed 7 processor. On the other hand, Fujifilm X-A3 has a
24.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor and features EXR Processor II processor.
Another difference between these two cameras is that Nikon Z50 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 Z50 II and X-A3 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon Z50 II and Fujifilm X-A3 Cameras
Nikon Z50 II and Fujifilm X-A3 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 Nikon Z50 II has 16% larger pixel area compared to Fujifilm X-A3, it has potential to collect more light on pixel level hence 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
Nikon Z50 II
or the
Fujifilm X-A3 ,
including hyperfocal distance.
