Max Shutter speed
Canon M6 MII can shoot continuously at max speed of
14.0 fps and has max shutter speed of
1/4000 sec. M6 II also has an electronic shutter which can shoot silently at max speed of
1/16000s. One thing to keep in mind is that electronic shutter may cause rolling shutter / jello effects, and also banding issues under artificial light on your images.
Flash
M6 II has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Focusing
Canon M6 MII features a Phase Detection autofocusing system. The AF system has 143 points to choose from. Canon M6 MII also features
Face detection AF where it intelligently detects the faces in the frame and locks the focus automatically.