Max Shutter speed
Panasonic ZS60 can shoot continuously at max speed of
10.0 fps and has max shutter speed of
1/2000 sec. ZS60 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.
Flash
Unfortunately ZS60 doesn't have an external flash shoe so you are limited with the built-in flash.
Focusing
Panasonic ZS60 features a Contrast Detection autofocusing system. The AF system has 49 points to choose from. Panasonic ZS60 also features
Face detection AF where it intelligently detects the faces in the frame and locks the focus automatically.
Post Focus
Panasonic ZS60 has a special Post Focus mode which uses its 4K video and focus bracketing features together to shoot and stack a burst of images into a single image which you can change the focus point on the LCD screen after it is taken.