Ricoh GR Digital IV has a
10.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CCD sensor . On the other hand, Nikon P7800 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor .
Below you can see the GR Digital IV and P7800 sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GR Digital IV and Nikon P7800 Cameras
Ricoh GR Digital IV and Nikon P7800 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 IV has 20% larger pixel area compared to Nikon P7800, 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 IV
or the
Nikon P7800 ,
including hyperfocal distance.
