DxOMark published their Canon EOS M5 sensor review and test results – The Canon EOS M5 achieved an excellent overall DxOMark sensor score of 77 points (5 points ahead of the Canon EOS M3, two points behind the better-performing Canon EOS 80D), with a combination of 23.4 bits color sensitivity, 12.4 EV dynamic range, and 1262 ISO low-light score – Canon EOS M5 is very good overall.
Conclusion from DxOMark:
On paper, the M5 looks like a mini-EOS 80D; however, that’s not quite the case. The built-in electronic viewfinder, the additional controls, and 7 fps burst with continuous AF (9 fps with AF locked) are all welcome additions. Taken together with the 24.2-MP Dual Pixel AF CMOS sensor and Digital IS, it all signals Canon’s intention to compete more seriously with rivals in the mirrorless segment. With hindsight, it seems like the Dual Pixel AF CMOS was designed with mirrorless in mind. Image quality is similar to that of the sensor found on the EOS 80D.