Leica V-Lux 40 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor . On the other hand, Canon SX600 HS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features DIGIC 4+ processor.
Below you can see the V-Lux 40 and SX600 HS sensor size comparison.
Sensor Size and Resolution Comparison image of Leica V-Lux 40 and Canon SX600 HS Cameras
Leica V-Lux 40 and Canon SX600 HS have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
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 V-Lux 40
or the
Canon SX600 HS ,
including hyperfocal distance.