Both Ricoh GR II and Ricoh GR have APS-C sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the GR II and GR sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh GR II and Ricoh GR Cameras
Ricoh GR II and Ricoh GR 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.
DxOMark Sensor Scores
Both Ricoh GR II and Ricoh GR sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, GR II has scored 80, 2 points higher than GR.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Ricoh GR II
80
23.6 bits
13.7 Evs
1078 ISO
Ricoh GR
78
23.6 bits
13.5 Evs
972 ISO
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 II
or the
Ricoh GR ,
including hyperfocal distance.