As mentioned, inside the camera body you'll find a new 24.2 megapixel APS-C CMOS sensor, a new 45 point AF system, and the camera can shoot at 7 frames per second, with a new mirror mechanism for improved noise and image quality. This includes a new compact motor, which has the characteristics of both a stepping motor and a DC motor, that's used to drive the mirror to reduce noise. A floating support and improved motor acceleration/deceleration control also reduces the mirror's rotation speed immediately before its up/down action. All of these improvements together reduce mechanical sound and camera vibration to improve the quality of images captured.
The 80D has a native ISO range of ISO100 - ISO16, 000, one stop higher than the 70D, and this can be expanded to ISO 25, 600, which will be useful for low-light conditions. Plus, the AF system will also focus under moonlight at -3EV. Talking of the AF system, the 45 AF points can be individually selected or grouped which gives the user more control of composition, and they are all cross-type.
The extra megapixels the new sensor brings means image resolution will be improved when compared to the 70D with its 20mp sensor and it's also smoother and quieter in use. Buffer rates for the 80D sit at 110 JPEG images and 25 RAW which is a vast improvement on the 70D which had a buffer rate of just 65 JPEG images and 16 RAW.
Flicker Detection makes it easier to ensure exposure levels are consistent, even when working under flickering artificial lights and there's a 7560-pixel RGB+ IR metering sensor that measures both visible light and invisible infrared light.
