Canon SX700 HS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Digic 6 processor. On the other hand, Panasonic FX580 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the SX700 HS and FX580 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SX700 HS and Panasonic FX580 Cameras
Canon SX700 HS and Panasonic FX580 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
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
Canon SX700 HS
or the
Panasonic FX580 ,
including hyperfocal distance.