Ricoh GR IIIx HDF has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Panasonic G9 II has a
25.0MP Four Thirds (17.3 x 13 mm ) sized Live MOS sensor .
Another similarity between these two cameras is that both Panasonic G9 II and Ricoh GR IIIx HDF sensors lack anti-alias (Low-Pass) filters. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the GR IIIx HDF and G9 II sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GR IIIx HDF and Panasonic G9 II Cameras
As seen above, Ricoh GR IIIx HDF has a 1.6x Larger sensor area than Panasonic G9 II. 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
Ricoh GR IIIx HDF
or the
Panasonic G9 II ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Four Thirds),
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.
