Panasonic XS1 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Sony W830 has a
20.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Bionz processor.
Below you can see the XS1 and W830 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic XS1 and Sony W830 Cameras
Panasonic XS1 and Sony W830 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
Panasonic XS1
or the
Sony W830 ,
including hyperfocal distance.