Canon D20 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features Digic 4 processor. On the other hand, Ricoh WG-80 has a
16.0MP (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Below you can see the D20 and WG-80 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon D20 and Ricoh WG-80 Cameras
Canon D20 and Ricoh WG-80 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 D20 has 32% larger pixel area compared to Ricoh WG-80, it has potential to collect more light on pixel level hence 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 D20
or the
Ricoh WG-80 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus ),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
