Samsung WB750 has a
13.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Samsung WB1100F has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the WB750 and WB1100F sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung WB750 and Samsung WB1100F Cameras
Samsung WB750 and Samsung WB1100F have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Samsung WB750 has 26% larger pixel area compared to Samsung WB1100F, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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 WB750
or the
Samsung WB1100F ,
including hyperfocal distance.