Nikon S3100 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, Samsung ST700 has a
16.0MP 1/2.3-inch (6.16 x 4.62 mm ) sized CCD sensor .
Below you can see the S3100 and ST700 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon S3100 and Samsung ST700 Cameras
Nikon S3100 and Samsung ST700 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 S3100
or the
Samsung ST700 ,
including hyperfocal distance.
