Ricoh GR IV HDF has a
26.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Sony RX1 has a
24.0MP Full frame (35.8 x 23.8 mm ) sized CMOS sensor .
Another difference between these two cameras is that Ricoh GR IV HDF's sensor lacks anti-alias (Low-Pass) filter. 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 IV HDF and RX1 sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GR IV HDF and Sony RX1 Cameras
As seen above, Sony RX1 has a 2.3x Larger sensor area than Ricoh GR IV HDF. 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 IV HDF
or the
Sony RX1 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Full frame),
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.
