Leica D-Lux Typ 109 has a
13.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Leica D-Lux 6 has a
10.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CMOS sensor and features Venus Engine processor.
Below you can see the D-Lux Typ 109 and D-Lux 6 sensor size comparison.
As seen above, Leica D-Lux Typ 109 has a 5.4x Larger sensor area than Leica D-Lux 6. 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.