Sony WX5 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Bionz processor. On the other hand, FujiFilm AV250 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the WX5 and AV250 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony WX5 and FujiFilm AV250 Cameras
Sony WX5 and FujiFilm AV250 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 WX5 has 32% larger pixel area compared to FujiFilm AV250, 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
Sony WX5
or the
FujiFilm AV250 ,
including hyperfocal distance.