Canon EOS C70 has a
8.9MP Super 35 (26.2 x 13.8 mm ) sized CMOS sensor . On the other hand, Blackmagic 6K Pro has a
21.0MP Super 35 (23.1 x 13 mm ) sized CMOS sensor .
Blackmagic 6K Pro's sensor provides 12.1MP more than Canon EOS C70'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 C70 and Cinema Camera 6K Pro sensor size comparison.
Sensor Size and Resolution Comparison image of Canon EOS C70 and Blackmagic 6K Pro Cameras
As seen above, Canon EOS C70 has a 1.2x Larger sensor area than Blackmagic 6K Pro. 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.
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 EOS C70
or the
Blackmagic 6K Pro ,
including hyperfocal distance.
