Both Fujifilm XF1 and Ricoh GXR A12 50mm have 12.0 MP resolution sensors but Fujifilm XF1's sensor is 2/3-inch (8.8 x 6.6 mm ) and Ricoh GXR A12 50mm's sensor is APS-C (23.6 x 15.7 mm ).
Since Ricoh GXR A12 50mm's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Fujifilm XF1.
Below you can see the XF1 and GXR A12 50mm F2.5 Macro sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm XF1 and Ricoh GXR A12 50mm Cameras
As seen above, Ricoh GXR A12 50mm has a 6.4x Larger sensor area than Fujifilm XF1. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
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
Fujifilm XF1
or the
Ricoh GXR A12 50mm ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(2/3-inch versus APS-C),
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.
