Nikon S1100pj has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Expeed C2 processor. On the other hand, Sony TX30 has a
18.0MP 1/2.3-inch (6.16 x 4.62 mm ) sized BSI-CMOS sensor .
Below you can see the S1100pj and TX30 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon S1100pj and Sony TX30 Cameras
Nikon S1100pj and Sony TX30 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
Nikon S1100pj
or the
Sony TX30 ,
including hyperfocal distance.