Max Shutter speed
Pentax K-x can shoot continuously at max speed of 5 fps
and has max shutter speed of 1/6000 sec
K-x has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Pentax K-x features both Contrast Detection and Phase Detection autofocus (AF) systems which ensures speed and accuracy of focusing in most situations. The AF system has 11 points to choose from. Pentax K-x also features Face detection AF
where it intelligently detects the faces in the frame and locks the focus automatically.