Max Shutter speed
Fujifilm X-A10 can shoot continuously at max speed of upto
6.0fps and has max shutter speed of
1/4000 sec. X-A10 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
Unfortunately X-A10 doesn't have an external flash shoe so you are limited with the built-in flash.
One neat feature that we like about X-A10's built-in flash has is that the flash head can be tilted upwards manually using your finger, which can be used to bounce the flash light and create a more pleasing lighting on your subject. It is not a very strong flash so the ceiling/wall or the surface you use for bouncing must be relatively close to the camera.
Focusing
Fujifilm X-A10 features a Contrast Detection autofocusing system. The AF system has 49 points to choose from.
Fujifilm X-A10 also features
Face detection AF where it intelligently detects the faces in the frame and locks the focus automatically.