Both Sony RX100 V and Sony RX100 V have 1″ sized 20.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the RX100 V and RX100 V sensor size comparison.
Sensor Size and Resolution Comparison image of Sony RX100 V and Sony RX100 V Cameras
Sony RX100 V and Sony RX100 V 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
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony RX100 V
70
22.8 bits
12.4 Evs
586 ISO
Sony RX100 V
70
22.8 bits
12.4 Evs
586 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
Sony RX100 V
or the
Sony RX100 V ,
including hyperfocal distance.