Max Shutter speed
Fujifilm GFX 50S can shoot continuously at max speed of 3.0 fps
and has max shutter speed of 1/4000 sec
. GFX 50S 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.
Unfortunately GFX 50S doesn't have a built-in flash but it has a flash shoe for mounting external flashes.
Fujifilm GFX 50S features a Contrast Detection autofocusing system. The AF system has 117 points to choose from. Fujifilm GFX 50S also features Face detection AF
where it intelligently detects the faces in the frame and locks the focus automatically.