Max Shutter speed
Fujifilm X-A5 can shoot continuously at max speed of
6.0 fps and has max shutter speed of
1/4000 sec. X-A5 also has an electronic shutter which can shoot silently at max speed of
1/32000s. 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
X-A5 has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Focusing
Fujifilm X-A5 features both Contrast Detection and Phase Detection autofocus (AF) systems which ensures speed and accuracy of focusing in most situations. The AF system has 91 points to choose from. Fujifilm X-A5 also features
Face detection AF where it intelligently detects the faces in the frame and locks the focus automatically.