Sony A850 has a
25.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Canon 6D MII has a
26.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features DIGIC 7 processor.
Below you can see the A850 and 6D MII sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A850 and Canon 6D MII Cameras
Sony A850 and Canon 6D 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 Sony A850 has 6% larger pixel area compared to Canon 6D MII, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Sony A850 and Canon 6D MII sensors have been tested by DxO and the results show that 6D MII has a better overall score of 85, 6 points higher compared to A850's score of 79.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A850
79
23.8 bits
12.2 Evs
1415 ISO
Canon 6D MII
85
24.4 bits
11.9 Evs
2862 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 A850
or the
Canon 6D MII ,
including hyperfocal distance.
