Sony WX500 has a
18.0MP 1/2.3 (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, FujiFilm S2950 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the WX500 and S2950 sensor size comparison.
Sony WX500 and FujiFilm S2950 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 FujiFilm S2950 has 30% larger pixel area (2.04µm2 vs 1.56µm2) compared to Sony WX500, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.