Canon R8 has a
24.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor. On the other hand, Canon 5D MII has a
21.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 4 processor.
Below you can see the R8 and 5D MII sensor size comparison.
Sensor Size and Resolution Comparison image of Canon R8 and Canon 5D MII Cameras
Canon R8 and Canon 5D MII 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. On the other hand, since Canon 5D MII has 14% larger pixel area (41.08µm 2 vs 36.00µm 2 ) compared to Canon R8, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Canon R8 and Canon 5D MII 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, R8 has scored 93, 14 points higher than 5D MII.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon R8
93
24.5 bits
14.5 Evs
3295 ISO
Canon 5D MII
79
23.7 bits
11.9 Evs
1815 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
Canon R8
or the
Canon 5D MII ,
including hyperfocal distance.