Olympus FE-5010 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Leica D-LUX 5 has a
10.0MP 1/1.63-inch (8.07 x 5.56 mm ) sized CCD sensor .
Below you can see the FE-5010 and D-LUX 5 sensor size comparison.
As seen above, Leica D-LUX 5 has a 1.6x Larger sensor area than Olympus FE-5010. 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.