Multiple Flash Photography Requires more equipment, risk of double images, must balance flashes. If subject lit by more that 1 flash, subject and camera can not move between flashes. Tripods help compensate. Have flashes go off simultaneously using slaves, synchronized. Doesn t require tripod.
Pictures look better if flashes are separated from the camera.
This is accomplished by verifying that each flash is set the proper distance from its subject according to its guide number and the camera aperture. Multiple flashes can be accomplished if there is enough equipment but more often is it necessary to move and set off repeated flashes with the same unit. A dark cloth can be lightly draped over the lens to allow movement of the assistant with the flash. Cloth is then removed for the next flash and so on. There is a risk of Ghosting caused by exposing a wall and then exposing a subject in front of the wall.