Ricoh GXR A12 50mm has a
12.0MP APS-C (23.6 x 15.7 mm ) sized CMOS sensor and features GR engine III processor. On the other hand, Nikon D5100 has a
16.0MP APS-C (23.6 x 15.7 mm ) sized CMOS sensor and features Expeed 2 processor.
Below you can see the GXR A12 50mm F2.5 Macro and D5100 sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GXR A12 50mm and Nikon D5100 Cameras
Ricoh GXR A12 50mm and Nikon D5100 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 GXR A12 50mm has 31% larger pixel area compared to Nikon D5100, 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 GXR A12 50mm
or the
Nikon D5100 ,
including hyperfocal distance.
