Fujifilm Z30 has a
10.0MP 1/2.3-inch (6.17 x 4.55 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 .
Samsung DV300F's sensor provides 6MP more than Fujifilm Z30's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the Z30 and DV300F sensor size comparison.
Fujifilm Z30 and Samsung DV300F 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 Fujifilm Z30 has 59% larger pixel area compared to Samsung DV300F, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.