Pentax K-01 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor . 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.
Canon M100's sensor provides 8MP more than Pentax K-01'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 K-01 and M100 sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K-01 and Canon M100 Cameras
As seen above, Pentax K-01 has a 1.1x Larger sensor area than Canon M100. 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
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K-01
79
23.7 bits
12.9 Evs
1135 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
Pentax K-01
or the
Canon M100 ,
including hyperfocal distance.