Canon G7 X has a
20.0MP 1″ (13.2 x 8.8 mm ) sized BSI-CMOS sensor and features DIGIC 6 processor. On the other hand, Canon M100 has a
24.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features DIGIC 7 processor.
Below you can see the G7 X and M100 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon G7 X and Canon M100 Cameras
As seen above, Canon M100 has a 2.9x Larger sensor area than Canon G7 X. 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 G7 X and Canon M100 sensors have been tested by DxO and the results show that M100 has a better overall score of 79, 8 points higher compared to G7 X's score of 71.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon G7 X
71
23.0 bits
12.7 Evs
556 ISO
Canon M100
79
23.5 bits
13.0 Evs
1272 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 G7 X
or the
Canon M100 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1″ versus APS-C),
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.
