Sony a5100 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Sony a3500 has a
20.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features BIONZ processor.
Below you can see the a5100 and a3500 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony a5100 and Sony a3500 Cameras
Sony a5100 and Sony a3500 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 Sony a3500 has 21% larger pixel area (18.50µm 2 vs 15.28µm 2 ) compared to Sony a5100, 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
Sony a5100
or the
Sony a3500 ,
including hyperfocal distance.
