Panasonic FP1 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features Venus Engine IV processor. On the other hand, Fujifilm XP120 has a
16.0MP (1/2. ) sized BSI-CMOS sensor .
Below you can see the FP1 and XP120 sensor size comparison.
As seen above, Panasonic FP1 has a infx Larger sensor area than Fujifilm XP120. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.