Canon 7D MII has a
20.0MP APS-C (22.4 x 15 mm ) sized CMOS sensor and features DIGIC 6 (dual) processor. On the other hand, Sony A99 has a
24.0MP Full frame (35.8 x 23.8 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the 7D MII and A99 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 7D MII and Sony A99 Cameras
As seen above, Sony A99 has a 2.5x Larger sensor area than Canon 7D MII. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
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. Canon 7D MII and Sony A99 sensors have been tested by DxO and the results show that A99 has a better overall score of 89, 19 points higher compared to 7D MII's score of 70.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 7D MII
70
22.4 bits
11.8 Evs
1082 ISO
Sony A99
89
25.0 bits
14.0 Evs
1555 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 7D MII
or the
Sony A99 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Full frame),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
