Nikon S6000 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, Leica V-Lux 4 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor .
Below you can see the S6000 and V-Lux 4 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon S6000 and Leica V-Lux 4 Cameras
Nikon S6000 and Leica V-Lux 4 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 S6000
or the
Leica V-Lux 4 ,
including hyperfocal distance.