FujiFilm F70EXR has a
10.0MP 1/2-inch (6.4 x 4.8 mm ) sized CCD sensor and features EXR processor. On the other hand, FujiFilm F80EXR 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 F70EXR and F80EXR sensor size comparison.
Sensor Size and Resolution Comparison image of FujiFilm F70EXR and FujiFilm F80EXR Cameras
FujiFilm F70EXR and FujiFilm F80EXR 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 F70EXR has 22% larger pixel area compared to FujiFilm F80EXR, 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
FujiFilm F70EXR
or the
FujiFilm F80EXR ,
including hyperfocal distance.