Pentax WG-3 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Canon D30 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features DIGIC 4 processor.
Below you can see the WG-3 and D30 sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax WG-3 and Canon D30 Cameras
Pentax WG-3 and Canon D30 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 Canon D30 has 32% larger pixel area (2.34µm 2 vs 1.76µm 2 ) compared to Pentax WG-3, 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
Pentax WG-3
or the
Canon D30 ,
including hyperfocal distance.
