Samsung TL225 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Samsung Galaxy Camera 4G has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features 1.4GHz Quad-Core processor.
Below you can see the TL225 and Galaxy Camera 4G sensor size comparison.
Samsung TL225 and Samsung Galaxy Camera 4G 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.