Ricoh GR Digital III has a
10.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CCD sensor and features GR engine III processor. On the other hand, Canon S100 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CMOS sensor and features Digic 5 processor.
Below you can see the GR Digital III and S100 sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GR Digital III and Canon S100 Cameras
Ricoh GR Digital III and Canon S100 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 GR Digital III has 20% larger pixel area compared to Canon S100, 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
Ricoh GR Digital III
or the
Canon S100 ,
including hyperfocal distance.
