Sony A6500 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Ricoh GR has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor .
Sony A6500's sensor provides 8MP more than Ricoh GR's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the A6500 and GR sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A6500 and Ricoh GR Cameras
Sony A6500 and Ricoh GR have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
DxOMark Sensor Scores
Both Sony A6500 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, A6500 has scored 85, 7 points higher than GR.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A6500
85
24.5 bits
13.7 Evs
1405 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
Sony A6500
or the
Ricoh GR ,
including hyperfocal distance.