Olympus FE-4030 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features TruePic III processor. On the other hand, Samsung Galaxy Camera 2 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features 1.6GHz Quad-Core Exynos processor.
Below you can see the FE-4030 and Galaxy Camera 2 sensor size comparison.
Olympus FE-4030 and Samsung Galaxy Camera 2 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.