Samsung ST600 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Samsung DV300F has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the ST600 and DV300F sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung ST600 and Samsung DV300F Cameras
Samsung ST600 and Samsung DV300F 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
Samsung ST600
or the
Samsung DV300F ,
including hyperfocal distance.