Fujifilm JX550 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Fujifilm JX500 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the JX550 and JX500 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm JX550 and Fujifilm JX500 Cameras
Fujifilm JX550 and Fujifilm JX500 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 JX500 has 7% larger pixel area (2.04µm 2 vs 1.89µm 2 ) compared to Fujifilm JX550, 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 JX550
or the
Fujifilm JX500 ,
including hyperfocal distance.