Canon SD4000 IS has a
10.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Digic 4 processor. On the other hand, Ricoh CX1 has a
9.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features Smooth Imaging Engine IV processor.
Below you can see the SD4000 IS and CX1 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SD4000 IS and Ricoh CX1 Cameras
Canon SD4000 IS and Ricoh CX1 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 Ricoh CX1 has 11% larger pixel area (3.13µm 2 vs 2.81µm 2 ) compared to Canon SD4000 IS, 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 SD4000 IS
or the
Ricoh CX1 ,
including hyperfocal distance.
