Nikon S6100 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Expeed C2 processor. On the other hand, Nikon L28 has a
20.0MP 1/2.3-inch (6.16 x 4.62 mm ) sized CCD sensor .
Below you can see the S6100 and L28 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon S6100 and Nikon L28 Cameras
Nikon S6100 and Nikon L28 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 S6100
or the
Nikon L28 ,
including hyperfocal distance.