Canon G16 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor and features Digic 6 processor. 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 G16 and D-Lux 6 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon G16 and Leica D-Lux 6 Cameras
Canon G16 and Leica D-Lux 6 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 D-Lux 6 has 20% larger pixel area (4.16µm 2 vs 3.46µm 2 ) compared to Canon G16, 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
Canon G16
or the
Leica D-Lux 6 ,
including hyperfocal distance.