Max Shutter speed
Nikon D300S can shoot continuously at max speed of 7 fps
and has max shutter speed of 1/8000 sec
D300S has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Nikon D300S features both Contrast Detection and Phase Detection autofocus (AF) systems which ensures speed and accuracy of focusing in most situations. The AF system has 51 points to choose from. Nikon D300S also features Face detection AF
where it intelligently detects the faces in the frame and locks the focus automatically.
You can download Nikon D300S's User Manual here