Leica D-Lux Typ 109 has a
13.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Leica Digilux 3 has a
7.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Leica D-Lux Typ 109's sensor provides 6MP more than Leica Digilux 3's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the D-Lux Typ 109 and Digilux 3 sensor size comparison.
Sensor Size and Resolution Comparison image of Leica D-Lux Typ 109 and Leica Digilux 3 Cameras
Leica D-Lux Typ 109 and Leica Digilux 3 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Leica Digilux 3 has 72% larger pixel area (30.47µm 2 vs 17.71µm 2 ) compared to Leica D-Lux Typ 109, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Leica D-Lux Typ 109
or the
Leica Digilux 3 ,
including hyperfocal distance.
