Fujifilm F550 EXR has a
16.0MP 1/2-inch (6.4 x 4.8 mm ) sized EXRCMOS sensor and features EXR processor. On the other hand, FujiFilm Z700EXR has a
12.0MP 1/2-inch (6.4 x 4.8 mm ) sized CCD sensor and features EXR processor.
Below you can see the F550 EXR and Z700EXR sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm F550 EXR and FujiFilm Z700EXR Cameras
Fujifilm F550 EXR and FujiFilm Z700EXR 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 Z700EXR has 32% larger pixel area (2.56µm 2 vs 1.93µm 2 ) compared to Fujifilm F550 EXR, 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 F550 EXR
or the
FujiFilm Z700EXR ,
including hyperfocal distance.